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E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 Features General Description ÿÿ ÿÿ ÿÿ ÿÿ ÿÿ ÿÿ ÿÿ ÿÿ ÿÿ ÿÿ The star coupler is part of the electrical, physical layer in a FlexRay™ communication network. The E981.57 provides interfaces to connect up to two branches of twisted pair physical bus lines to other bus drivers or star couplers. It also interfaces with a communication controller (CC). Via SPI the bus driver (BD) provides status information concerning failure detection on the bus lines (e.g. short circuit) and over temperature condition to a host controller (HOST). An interrupt signal is generated whenever the failure status changes. The device supports normal and low power mode and provides remote wake-up capability via bus line. The output INH can be used to control an external voltage regulator. Enhanced Active Star Device with new features Compliant to FlexRay™ electrical physical layer v3.0 2 branches for coupling of 2 FlexRay™ buses (extensible by banking of active star devices) Transmitter control by bus guardian interface (BGE) Short circuit and over temperature protection Low EME due to balanced differential transmission Automotive qualified according to AEC-Q100 Support of two low power modes and wake-up Support of data rates up to 10 Mbit/s Control and diagnosis via SPI™ Applications ÿÿ Star coupler and additionally usable as transceiver in FlexRay™ nodes (ECUs) Ordering Information Product ID Temp. Range Package E981.57 -40°C to +125°C QFN44L9 Typical Applications Circuit Blockdiagram SCSN SCK Controller ECU VBAT SDI SDO Single_Branch_1 Bus Failure Detector_1 Host Interface (SPI + Interrupt) BP_1 INTN Power Supply RxD VIO VIO SCSN1 (HOST) INTN2 Communication INTN1 Microcontroller SDO SDI SCSN2 Supervisor SCK VECU TxD TxEN BGE BGE Transmitter_1 Communication Controller Interface Receiver_1 Bus Guardian Interface Wake up Detector_1 BM_1 Single_Branch_2 TxEN Local Wake-up TxD LWU DCN RxD VIO VCC INH E981.57 Device 2 (banked) BP1 BM1 BP2 SPI+INTN2 SPI+INTN1 TRXD0 TRXD0 TRXD1 TRXD1 VBUF VBUF BM2 BM1 INH VCC VIO RxD TxD E981.56 Device 1 (CC and Host IF used) BP1 BM2 BP2 BM3 BP3 LWU DCN BM4 Bus Failure Detector_2 TxEN Local Wake-up RSTN DCN Central Logic BP_2 Transmitter_2 BM_2 BP4 Receiver_2 INH GND GND LWU VBAT VCC VIO FlexRay™ and Wake up Detector_2 Inhibit & Wake Power Supply Star Transmitter & Receiver Undervolt. POR Monitor 5V Overtemp. Regulator Monitor TRXD0 TRXD1 intra star interface VBUF Vref E981.57 GND are trademarks of Daimler AG ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 1/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 1 Pinout Table 1: Pin Description Pin Name Type 1) Description 2) Remark 1 SCSN DI, PU Chip Select Input (from H) VIO-level 2 SCK DI, PD SPI Clock Input (from H) VIO-level 3 SDI DI, PD SPI Data Input (from H) VIO-level 4 SDO DO, tristate SPI Data Output (to H) VIO-level 5 INTN DO 6 GNDD 7 Error sum signal Low active S Ground 3rd GND Pin VIO S IO Supply 3.3V or 5V 8 BGE DI, PD Enables transmission TxD to bus VIO-level 9 TXD DI, PD Transmit Data Input (from CC) VIO-level 10 TXEN DI, PU Transmit Data Enable (from CC) VIO-level (low active) 11 RXD DO Receive Data Output (to CC) 12 TRXD0 DIO Intra star interface 0 External pull up resistor 13 TRXD1 DIO Intra star interface 1 External pull up resistor 15 INH O, HV Inhibit output (high side switch) 16 LWU DI, HV Local wake-up 17 VBAT S, HV HV supply in sleep mode 19 GND2 S 21 VBUF2 AIO 22 VCC2 S 29 BM_2 AIO Bus Line Minus Analog I/O, HV protected 30 BP_2 AIO Bus Line Plus Analog I/O, HV protected 32 BM_1 AIO Bus Line Minus Analog I/O, HV protected Bus Line Plus Analog I/O, HV protected VIO-level Logic at VBAT level HV Input Battery voltage with bias protection diode Ground 2nd GND-Pin Buffer cap. for remote wake-up External capacitor 2 Transceiver Supply 2nd VCC-Pin 33 BP_1 AIO 34 VCC1 S 35 VBUF1 AIO 37 GND1 S Ground 43 DCN DI Downward compatibility to E910.56B 44 RSTN DI, PU External reset Low active 14, 18, 20, 2328, 31, 36, 3842 n.c. - Not connected Recommendation: connection to GND Transceiver Supply VCC-Pin Buffer cap. for remote wake-up External capacitor 1 GND-Pin VIO-level (3 1) 1 D = digital, A = analog, S = Supply, I = Input, O = Output, HV = High Voltage, PU = Pull up, PD = pull down, pins not in list are not connected internally 2) H= Host, CC= Communication Controller 3) DCN=1 (VDCN at VIO level):E981.57 is compatible to EPL Spec. 3.0, DCN=0: E981.57 is downward compatible to E981.56B. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 2/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 1 SCK 2 SDI VBUF1 VCC1 39 38 n.c. GND1 40 n.c. 41 n.c. n.c. n.c. 43 42 n.c. 44 SCSN DCN RSTN 2 Pinout 35 34 37 36 33 BP_1 32 BM_1 3 31 n.c. SDO 4 30 BP_2 INTN 5 29 BM_2 GNDD 6 28 n.c. VIO 7 27 n.c. BGE 8 26 n.c. TXD 9 25 n.c. TXEN 10 24 n.c. RXD 11 23 n.c. 45 22 VCC2 GND2 20 21 VBUF2 19 n.c. 18 n.c. 16 17 LWU 15 VBAT 14 INH TRXD1 TRXD0 12 13 n.c. E981.57 Figure 1: Package pinout QFN44L9, transparent top view, not to scale. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 3/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 2 Absolute Maximum Ratings Stresses beyond these absolute maximum ratings listed below may cause permanent damage to the device. These are stress ratings only; operation of the device at these or any other conditions beyond those listed in the operational sections of this document is not implied. Exposure to absolute maximum rated conditions for extended periods may affect device reliability. All voltages referred to VGND. Currents flowing into terminals are positive, those drawn out of a terminal are negative. Description Condition Symbol Max Unit VBAT 18 V Load dump 1) VBAT 40 V Jump start VBAT 28 V Alternator Supply Voltage 2) Local Wake-up Voltage Min VLWU -0.3 VBAT+0.3 V Transceiver Supply Voltage VCC -0.3 5.5 V IO Supply Voltage VIO -0.3 5.5 V Star Supply Voltage -0.3 5.5 V VBP,VBM VBUF -27 6) 40 V VTXEN, VTXD, VRXD, VSCSN, VSCK, VSDI, VSDO, VINTN -0.3 uVIO+0.3 V VINH -0.3 uVBAT+0.3 V VTRXD0, VTRXD1 -0.3 VBUF+0.3 V Pins BP,BM against GND uESDIEC 6 kV LWU against GND (with 3.3kΩ series resistor) uESDIEC 6 kV VBAT against GND (with 100nF buffer capacitor) uESDIEC 6 kV Pins BP,BM, VBAT, LWU against GND pin uESDext 6 kV Other pins uESDint 2 kV Pins BP,BM uESDmm 100 V LWU uESDmm 100 V VBAT uESDmm 100 V corner pins uESDCDM 750 V other pins uCDM 500 V Pin VBAT -150 100 V Pin LWU -150 100 V Pins BPx/ BMx -150 100 V Bus Line Voltage Digital IO (3.3V or 5V) Voltage at INH Voltage at TRXD0, TRXD1 ESD Voltage HBM according to IEC61000-4-2 (system level) 3) ESD Voltage HBM according to AEC-Q100 (chip level) 4) ESD Voltage MM according to JESD22A115/AEC-Q100-003 ESD Voltage CDM according to AEC-Q100 Immunity to transients 5) 7) ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 4/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 Description Condition Symbol Min Max Unit 150 °C Junction Temperature TJ Ambient Temperature TAMB_ Class1 -40 125 °C Storage Temperature TSTG -40 125 °C 1) 2) 3) 4) 5) 6) 7) max. 400 ms with RTJA=12.9 K/W max. 1 min with RTJA=12.9 K/W, Cs = 150pF, Rd = 330Ω Cs = 100pF, Rd = 1500Ω Pulse 1, 2a, 3a, 3b according to ISO7637-1, -2 Class C Minimum value from -40 to +95°C. Between +95°C and +125°C VBP = VBM = -17V VBUF corresponds to the parameter VStarSupply of the EPL specification [EPL09] 2.1 Recommended Operating Conditions Parameters are guaranteed within the range of operating conditions unless otherwise specified. Description Battery Supply Voltage Condition Symbol Min Max Unit 4.75V≤VCC≤ 5.25V uVBAT 5.5 18 V Undervoltage at VCC uVBATWAKE 7 18 V uVCC 4.75 5.25 V Transceiver Supply Voltage IO Supply Voltage 1) Level shift interface 3.3V uVIO 3.0 3.6 V IO Supply Voltage 1) Level shift interface 5V uVIO 4.75 5.25 V VLWU -0.3 18 V Top - 40 125 °C Local Wake-up voltage Operating Temperature Range 1) Both AS-CC interface and AS-Host interface with 3.3V or 5V power supply ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 5/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 3 Detailed Electrical Specification 3.1 Power Supply Interface 3.1.1 Power Supply Parameters Description Condition Symbol Supply current at VBAT AS_Sleep, VCCOK=0 IBATslp Supply current at VCC AS_Standby ICCsby TX idle ICCni TX active ICCna Supply current at VIO No load at RxD, SDO, INTN IVIO Star Supply Voltage 1) CBUF=2x100 μF, uVCC=5V,TX active VBUF Supply current at VCC Supply current at VCC 2) Minimum required voltage for LWU Min Typ Max Unit 65 120 μA 900 μA 25 30 mA 70 150 mA 50 μA uVCC V 7 V uVCC0.2 uVBAT_ WAKE 1) VBUF corresponds to VStarSupply defined in [EPL09]; a large CBUF is necessary if wake-up symbols shall be transmitted in the sleep mode 2) The current consumption depends on the number of used branches and the succession of the frames 3.1.2 Inhibit Output Parameters Description Output voltage Absolute leakage current Condition Symbol Min Not sleep, IINH=200μA, uVBAT>5.5V uINHNot_ Sleep 1) uVBAT-1 AS_Sleep iINHleak 1) Typ Max Unit V 10 μA Max Unit 1) INH is a logic output signal at VBAT level. uINHNot_Sleep, iINHleak correspond with uINH1Not_Sleep, iINH1leak 3.1.3 Local Wake-up Input Parameters Description Condition Symbol Min Typ LWU threshold LWU_VIO=1 VTH_LWU_VIO 1 2.4 V LWU threshold LWU_VIO=0 VTH_LWU_VBAT 2.5 4.5 V Wake pulse filter time dStarWakePulseFilter 1 500 μs Time to enter AS_Normal after local wake-up event 1) dStarWake-upReactionlocal 100 µs 1) Note: dStarWake-upReactionlocal is counted from the end of dStarWakePulseFilter Local wake-up (LWU) is a logic signal at VIO/VCC or VBAT level. A negative or positive pulse at LWU wakes the ASD. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 6/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 3.1.1 Power Supply Parameters Description Condition Symbol Power on threshold VDD rising 1) Power on threshold VDD falling 1) Min Typ Max Unit 2.9 V uStarUVDDon uStarUVDDoff 2.5 Undervoltage detection threshold VCC 2) uStarUVVCC 4.3 4.7 V Undervoltage detection threshold VBAT 2) uStarUVVBAT 4.5 5.5 V Undervoltage detection threshold VBUF 3) uStarUVVBUF 4.0 4.5 V dStarUVVCC 350 500 650 μs dStarUVVBAT 350 500 650 μs dStarUVVBUF 350 500 650 μs dStarRVCC 350 500 650 μs dStarRVBAT 350 500 650 μs dStarRVBUF 350 500 650 μs Undervoltage reaction time VCC Undervoltage reaction time VBAT Undervoltage reaction time VBUF 3) Undervoltage recovery time VCC Undervoltage recovery time VBAT Undervoltage recovery time VBUF 3) V 1) VDD is the internal supply of the central logic. If VDD decreases to less than uStarUVDDoff, the active star device enters AS_off. 2) The hysteresis necessary to set and reset the undervoltage reliably is within the range of maximum and minimum values. 3) uStarUVVBUF, dStarUVVBUF, dStarRVBUF correspond with uStarUVVSupply, dStarUVVSupply, dStarRVSupply defined in [EPL09]. 3.2 Level Shift Interface Parameters Description Condition Symbol Min Undervoltage detection threshold uVIO 1) uStarUVVIO 2.35 Undervoltage reaction time uVIO dStarUVVIO 350 Undervoltage revovery time uVIO dStarRVIO 350 Typ Max Unit 2.75 V 500 650 μs 500 650 μs 1) The hysteresis necessary to set and reset the undervoltage reliably is within the range of maximum and minimum values. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 7/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 3.3 Bus Interfaces (Branches 1 - 4) 3.3.1 Branch Receiver Parameters Description Condition Symbol Min Receiver threshold for detecting Data_1 AS_Normal uData1 Receiver threshold for detecting Data_0 AS_Normal Mismatch of receiver thresholds uCM=2.5V Max Unit 150 300 mV uData0 -300 -150 mV uData1|uData0| -30 30 mV uCM 1) -10 15 V RCM1, RCM2 10 20 40 kΩ 1800 2500 3200 mV -200 0 200 mV <1 25 µA 1600 µA Max Unit Undisturbed Receiver common mode input range receive function Receiver common mode input resistance TX idle AS_Normal, Rload=40…55 Ω, Cload=100pF Bus bias voltage AS_Sleep or AS_Standby, Rload=40…55 Ω, Cload=100pF uBias Absolute leakage current at AS_Off AS_Off, uBP=uBM=5V 2) iBPleak, iBMleak Absolute leakage current at loss of GND Loss of GND 3) uBP=uBM=0V iBPleakGND, iBMleakGND Typ 1) uCM=(uBP+uBM)/2 2) All other pins are connected to ground. 3) All other pins (including GND) are connected to 16V. 3.3.2 Branch Remote Wake-up Detector Parameters Description 1) Condition Symbol Min AS_Standby, AS_ Sleep, uVBAT≥7V uData0_LP -400 -100 mV Acceptance timeout for detection of a Data_0 phase in wake-up pattern dWU0Detect 1 4 μs Acceptance timeout for a detection of an Idle (or Data_1) phase in wake-up pattern dWUIdleDetect 1 4 μs Acceptance timeout for WU recognition dWUTimeout 48 140 μs dWUInterrupt 0.13 1 μs Wake-up detector threshold for detection Data_0 Acceptance timeout for interruptions Continuous signal before interruption 2) Typ 1) Description, see fig. 4.10.2 2) e.g. the minimum value of dWUInterrupt requires a continuous signal (minimum 0.87 μs) before interruption ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 8/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 3.3.3 Branch Transmitter Parameters Description 1) Condition Symbol Min Absolute differential voltage Rload=40…55Ω, Cload=100pF while sending uStarTxactive Absolute differential voltage Rload=40…55Ω, Cload=100pF while idle uStarTxidle Absolute output current at Bp, BM Max Unit 900 2000 mV 0 30 mV BP, BM shorted to GND iBPGNDShortMax, iBMGNDShortMax 60 mA Absolute output current at Bp, BM BP, BM shorted to 27V iBPBAT27ShortMax, iBMBAT27ShortMax 60 mA Absolute output current at Bp, BM BP, BM shorted to -5V iBP-5VShortMax, iBM-5VShortMax 60 mA Absolute output current at Bp, BM BP, BM shorted mutually iBPBMShortMax, iBMBPShortMax 60 mA Equivalent transmitter output resistance Rload=40Ω, 100Ω Cload=100pF 2) RStarTransmitter 300 Ω 40 Typ 150 1) Description, see fig. 4.4.3 and 4.4.4 2) RStarTransmitter =50Ω*(uBus100 - uBus40)/(2.5*uBus40 - uBus100) ; uBus100 is uBus with Rload=100Ω and uBus40 is uBus with Rload=40Ω 3.3.4 Branch To Branch Timing Parameters Description 1) Condition Filter time for Idle detection Filter time for activity detection Symbol Min dStarIdleDetection dStarActivityDetection Typ Max Unit 50 200 ns 100 250 ns Propagation delay from branch m to branch n Negative edge dStarDelay10 150 ns Propagation delay from branch m to branch n Positive edge dStarDelay01 150 ns Asymmetric propagation delay uBus ≥ 400mV, 4400ns ≥d Bit ≥ 80ns dStarAsym 2) 0 8 ns TSS length change dStarTSSLengthChange 3) -450 0 ns Prolongation of last bit of a frame dStarFES1LengthChange 4) 0 450 ns Symbol length change dStarSymbolLengthChange 5) -300 450 ns ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 9/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 Description 1) Condition Prolongation of symbol at symbol end 1) 2) 3) 4) 5) 6) Symbol Min dStarSymbolEndLengthChange 6) 0 Typ Max Unit 450 ns Max Unit Description, see fig. 4.2.2-4.2.5 dStarAsym=|dStarDelay10 - dStarDelay01| (for uBus >400mV and 4400ns>dBit>80ns [EPL 09]) dStarTSSLengthChange=dTSS_n-dTSS_m dStarFES1LengthChange=dFES1_n-dFES1_m dStarSymbolLengthChange=dSymbol_n-dSymbol_m, according [EPL 09] dStarSymbolEndLengthChange=dSymbolEnd_n-dSymbolEnd_m, according [EPL 09] 3.3.5 Mode Control Timing Parameters Description 1) Condition Symbol Min Typ Active star setup delay 2) dStarSetupDelay 500 ns Time to enter AS_Normal after VBUF is available remote wake-up event dStarWake-upReactionTime 70 µs Timeout for leaving AS_Normal_APM_RWU Undervoltage at VCC dStarWake-upGotoStandby 2 3.8 6 ms Go-to-sleep timeout No data transmitting or receiving dStarGotoSleep 640 1000 1300 ms dBranchRxActiveMax 650 2600 µs TOVER 140 170 °C Symbol Min Max Unit 0.7*uVIO V Noise detection time Overtemperature threshold 2) 1) description see section 4.9 2) not tested in production test 3.4 Communication Controller Interface 3.4.1 TXD and TXEN Input Parameters Description Condition TXEN threshold for detection high level VIH_TXEN 1) TXEN threshold for detection low level VIL_TXEN 1) TXD threshold for detection high level VIH_TXD 2) TXD threshold for detection low level VIL_TXD 2) Input capacitance at pin TXD 3) C_StarTXD Typ 0.3*uVIO V 0.6*uVIO 0.4*uVIO V V 10 pF Pull up current at TxEN uVIO=5V Ipu_TxEN -300 -150 -50 µA Pull down current at TxD uVIO=5V Ipd_TxD 5 30 50 µA 1) VIH_TXEN and VIL_TXEN correspond with uVDIG-IN-HIGH and uVDIG-IN-LOW of [EPL09]. 2) EPL notation: VIH_TXD is equivalent to uStarLogic_1, VIL_TXD is equivalent to uStarLogic_0. Note: The data lines TXD and TXEN from the Communication Controller are related to VIO level. 3) not tested in production test ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 10/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 3.4.2 RXD Output Parameters Description Condition Symbol Min Typ Unit uVIO V 0.2*uVIO V Iload=-2mA VOH_RXD Low level output voltage Iload=2mA VOL_RXD Rise time, fall time at RXD pin Cload=15pF dStarRXDR15+ dStarRXDF15 13 ns Difference of rise and fall time Cload=15pF |dStarRXDR15 –dStarRXDF15| 5 ns uVIO < uStarUVVIO, Rload=100kΩ uVRXD-OUT-UV 4) 500 mV AS_Off uVRXD-OUT-OFF 4) VIO V 2)3) 3) Output voltage at VIO undervoltage Output voltage at unsupplied star 3) 1) 2) 3) 4) 0.8*uVIO Max High level output voltage 1) 1) VOH and VOL correspond with uVDIG-OUT-HIGH and uVDIG-OUT-LOW of [EPL09]. related to 20%-80% uVIO not tested in production test uVRXD-OUT-UV, uVRXD-OUT-OFF correspond to uVDIG-OUT-UV, uVDIG-OUT-OFF of the EPL specification [EPL09] 3.4.3 Bus to RXD Timing Parameters Description Condition Symbol Min Idle reaction time dStarRxai Activity reaction time dStarRxia Typ Max Unit 50 550 ns 100 350 ns Receiver delay negative edge dStarRx10 225 ns Receiver delay positive edge dStarRx01 225 ns uBus ≥ 400mV, 4400ns ≥d Bit ≥ 80ns dStarRxAsym 2) 10 ns TSS length change from branch to RxD 3) Rload=40 Ω, Cload=100pF dStarTSSLength Change_Bus_RxD -450 0 ns FES1 length change from branch to RxD 4) Rload=40 Ω, Cload=100pF dStarFES1Length Change_Bus_RxD 0 450 ns Symbol length change from branch to RxD 5) Rload=40 Ω, Cload=100pF dStarSymbolLength Change_ Bus_RxD -300 400 ns Receiver delay mismatch 1) Description, see section 4.4.1.1 and 4.4.1.2 2) dStarRxAsym = | dStarRx10 - dStarRx01 | (for uBus level of +/-150mV and +/-300mV) 3) dStarTSSLengthChange_Bus_RxD=dStarRx01-dStarRxia 4) dStarFES1LengthChange_Bus_RxD =dStarRxai-dStarRx01 5) dStarSymbol¬LengthChange_Bus_RxD = dStarRxai-dStarRxia ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 11/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 3.4.4 TXD, TXEN To Bus Timing parameters Description 1) Condition Symbol Transmitter delay, negative edge Rload=40 Ω Cload=100pF, TxD rise and fall times ≥ 9ns (20%-80%) Max Unit dStarTx10 225 ns dStarTx01 225 ns Transmitter delay mismatch TxD fall/rise time 5±1ns dStarTxAsym 3) 10 ns Fall time differential bus voltage 2) 80% to 20% Rload=40 Ω, Cload=100pF dBusTx10 6 18.75 ns Rise time differential bus voltage 2) 20% to 80% Rload=40 Ω, Cload=100pF dBusTx01 6 18.75 ns dBusTxDif 3 ns Transmitter delay, positive edge Difference between differential rise and fall time | dBusTx10 - dBusTx01| 2) Min Typ Propagation delay idle to active Rload=40 Ω, Cload=100pF dStarTxia 250 ns Propagation delay active to idle Rload=40 Ω, Cload=100pF dStarTxai 250 ns Transition time idle to active 2) Rload=40 Ω, Cload=100pF dBusTxia 30 ns Transition time active to idle 2) Rload=40 Ω, Cload=100pF dBusTxai 30 ns TXEN=0 dStarTxActiveMax 650 2600 µs TSS length change from TxD to the branches 4) Rload=40 Ω, Cload=100pF dStarTSSLength Change_TxD _Bus -450 0 ns FES1 length change from TxD to the branches 5) Rload=40 Ω, Cload=100pF dStarFES1Length Change_ TxD _Bus 0 450 ns Symbol length change from TxD to the branches 6) Rload=40 Ω, Cload=100pF dStarSymbolLength Change_ TxD _Bus -300 400 ns 75 ns Maximum length of transmitter activation TxD reaction time after TxEN Low-High transient 2)7) 1) 2) 3) 4) 5) 6) 7) dStarTxreaction Description, see section 4.4.1.3-4.4.1.4 Not tested in production test dStarTxAsym = | dStarTx10 - dStarTx01 | (for uBus level of +/-150mV and +/-300mV) dStarTSSLengthChange_TxD_Bus=dStarTx01-dStarTxia dStarFES1LengthChange_TxD_Bus =dStarTxai-dStarTx01 dStarSymbol¬LengthChange_TxD_Bus = dStarTxai-dStarTxia See section 4.4.1.3 ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 12/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 3.4.4 TXD, TXEN To Bus Timing parameters Description Idle loop back delay Condition Symbol Min Typ dStarTxRxai 1) Max Unit 325 ns 1) The time span from the end of a symbol transmission (0-1 transition of TxEN and TxD) to the 0-1 transition at the own RxD pin. 3.5 Host Interface 3.5.1 SCSN, SCK and SDI Input Parameters Description Condition Symbol Min Threshold for detection high level VIH_SCSN, VIH_ SCK, VIH_SDI Threshold for detection low level VIL_SCSN, VIL_ SCK, VIL_SDI 0.3*uVIO Typ Max Unit 0.7*uVIO V V Pull up current at SCSN uVIO=5V Ipu_SCSN -50 -30 -5 µA Pull down current at SCK,SDI uVIO=5V Ipd_SCK, Ipd_SDI 5 30 50 µA The signals SCSN, SCK and SDI from the host microcontroller are related to VIO level. VIH and VIL correspond with uVDIG-IN-HIGH and uVDIG-IN-LOW of [EPL09]. 3.5.2 SDO and INTN Output Parameters 1) Description Condition Symbol Min High level output voltage Iload= -2mA VOH_SDO, VOH_ INTN 0.8*uVIO Low level output voltage Iload=2mA Output voltage SDO at VIO undervoltage Output voltage SDO at unsupplied star Output voltage INTN at VIO undervoltage Output voltage INTN at unsupplied star 4) Typ Max Unit uVIO V VOL_SDO, VOL_ INTN 0.2*uVIO V VIO < uStarUVVIO, Rload=100kΩ uVSDO-OUT-UV 2) 500 mV AS_Off uVSDO-OUT-OFF 2) 500 mV VIO < uStarUVVIO, Rload=100kΩ uVINTN-OUT-UV 3) 500 mV AS_Off uVINTN-OUT-OFF 3) VIO V 1) The signals SDO and INTN to the host microcontroller are related to VIO level. VOH and VOL correspond with uVDIG-OUT-HIGH and uVDIG-OUT-LOW of [EPL09]. 2) uVSDO-OUT-UV, uVSDO-OUT-OFF correspond to uVDIG-OUT-UV, uVDIG-OUT-OFF of the EPL specification [EPL09]. 3) uVINTN-OUT-UV, uVINTN-OUT-OFF correspond to uVDIG-OUT-UV, uVDIG-OUT-OFF of the EPL specification [EPL09]. 4) not tested in production test ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 13/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 3.5.3 SPI And INTN Timing Parameters Description Condition Symbol Min Typ Max Unit 5 MHz SPI clock frequency fSPI Setup time SCSN dspis 100 ns Hold time SCSN dspih 100 ns Internal processing time between 2 SPI commands dspid 70 μs Mode transition time after host command dStarModeChangeSPI 100 μs dStarReactionTimeSPI 200 μs Max Unit 0.7*uVIO V Time for detection of an event to falling edge of INTN The signals SDO and INTN to the host microcontroller are related to VIO level. 3.6 Bus Guardian Interface Parameters Description Condition Symbol Min Typ Threshold for detection high level VIH_BGE 1) Threshold for detection low level VIL_BGE 1) 0.3*uVIO Ipd_BGE 5 30 50 µA Min Typ Max Unit 0.7* uVBUF V Pull down current at BGE uVIO=5V V 1) VIH and VIL correspond with uVDIG-IN-HIGH and uVDIG-IN-LOW of [EPL09]. 3.7 Intra Star Interface Parameters Description Threshold for detection high level at TRXD0, TRXD1 Condition Symbol Rpullup = 220Ω, Cload<50pF VBUF≥4.5V VIH_TRXD Threshold for detection low level at TRXD0, TRXD1 VIL_TRXD Low level output voltage at TRXD0, TRXD1 VOL_TRXD 0.3* uVBUF V 0.8 V ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 14/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 3.8 DCN and RSTN Input Parameters Description Condition Symbol Min Threshold for detection high level VIH_DCN Threshold for detection low level VIL_DCN Threshold for detection high level VIH_RSTN Threshold for detection low level VIL_RSTN 0.3*uVIO Ipu_RSTN -50 Pull up current at RSTN uVIO=5V Typ Max Unit 0.7*uVIO V 0.3*uVIO V 0.7*uVIO V V -30 -5 µA Note: There is no internal pull-up or pull-down current source at the DCN pin. 4 Functional Description 4.1 Block Diagram SCSN Single_Branch_1 SCK Bus Failure Detector_1 Host Interface (SPI + Interrupt) SDI SDO BP_1 INTN RxD TxD TxEN BGE Transmitter_1 Communication Controller Interface Receiver_1 Bus Guardian Interface Wake up Detector_1 BM_1 Single_Branch_2 Bus Failure Detector_2 RSTN DCN Central Logic BP_2 Transmitter_2 BM_2 Receiver_2 INH LWU VBAT VCC VIO Wake up Detector_2 Inhibit & Wake Star Transmitter & Receiver Power Undervolt. Supply Monitor POR 5V Overtemp. Regulator Monitor TRXD0 TRXD1 intra star interface VBUF Vref E981.57 GND Figure 4.1.1: Block Diagram of an active star device (ASD) ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 15/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 The E981.57 is an active star device (ASD). One or more ASDs form an Active Star (AS) in a FlexRay network. The following table shows the functional classes according to FlexRay Electrical Physical Layer Specification V3.0 (FlexRay Consortium 2009) implemented in the Active Star device: Functional class Implemented Active star – communication controller interface yes Active star – bus guardian interface yes Active star – voltage regulator control (including LWU) yes Active star – internal voltage regulator no Active star – logic level adaptation yes Active star – host interface yes Increased voltage amplitude transmitter yes The ASD E981.57 has 2 branches to connect 2 bus lines from FlexRay nodes. Every branch has a bus interface (the pins BP and BM) and can receive or transmit differential bus signals. The receiver of each branch recognizes incoming FlexRay signals and a signal router as part of the central logic switches the signal paths to all other branches. The idle phase after the end of the frame resets the signal path and all branches are ready to receive signals from their bus lines. The signal router switches the signal path again according the receiving branch. Collisions are normally prevented due to the FlexRay time slot principle. In addition the signal router prevents the concurrent reception from other bus lines during the propagation of a frame. Each branch of an ASD consists of the receiver, the wake-up detector and the transmitter including bus error detection. The receiver forms from the differential analog bus signal a single-ended logical signal. The transmitter sends out the well balanced differential signal to achieve high signal integrity and a low EME. The wake-up detector acts like a receiver at very low power consumption and wakes the ASD by means of dedicated patterns from the bus. In the normal mode AS_Normal the power supply is the external voltage VCC, necessary for the transmitting and receiving functionality. VCC is connected with the internal supply voltage VBUF as long as uVCC in not in undervoltage. Otherwise, two external capacitors connected to VBUF1 und VBUF2 can maintain the voltage which is necessary to transmit wake-up symbols in the low power mode. A second voltage derived from VBAT (battery voltage with the reverse bias protection diode) serves as low power supply (in AS_Standby and AS_Sleep) to keep the states and to permit the wake-up ability. The signal INH (related to VBAT) is applicable to switch the external power supply VCC. Every signal path passes the TRXD intra star interface (TRXD-IF). The pins TRXD0 and TRXD1 have external pull up resistors and allow to connect further star couplers (increasing of the number of branches by banking of active star devices). If the AS is housed on an ECU board the usage of the communication controller interface (CC-IF) and/or the host interface (Host-IF) is possible. The CC sets TXEN=0. This forces the signal router to send the TXD signal from the CC to all 2 branches as well as to the intra star interface (TRXD-IF). The host interface comprises the SPI (SCSN, SCK, SDO, and SDI) and the interrupt pin INTN. The host can read the states of the AS device and the contents of the failure registers. Write commands allow the mode control. The interfaces of different types of communication controllers CC (RXD, TXD, and TXEN) and hosts (SPI, INTN) can require different voltage levels. A level shift interface (VIO) delivers the reference voltage of both interfaces. Also the controlling device of the inputs BGE, RSTN and DCN are related to VIO. The bus guardian interface permits by the mean of an extra signal to switch all transmitters in a high resistance state (pin BGE). The input signal at BGE is also related to VIO. The local wake-up interface comprises the pin LWU (local wake-up). An edge at this pin permits to wake the active star device by external signal sources with arbitrary levels (from 3.3V to VBAT). ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 16/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 4.2 Branch To Branch Signal Propagation 4.2.1 Autonomous ASD Configuration VECU VBAT 5VRegulator Data streams Br.1-1 VCC VBUF VIO Br.1-2 TRD0 TRD1 TRD0 TRD1 BGE VBAT VCC Br.2-1 VBUF VIO Br.2-2 BGE Figure 4.2.1: Example of the two banked autonomous active star devices (autonomous ASDs) Fig. 4.2.1 shows an AS with 2 banked ASDs which operates in the autonomous mode only. The arrows on the right side symbolize the data traffic. The incoming signal at branch 1-2 is propagated to all other 3 branches. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 17/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 4.2.2 Branch To Branch Signal Timing The signal timings from a receiving branch m to another transmitting branch are illustrated in figures 4.2.2 - 4.2.4. uBus_m (Receiving branch m) uRxData 150mV 0V -150mV t Idle Data_0 Data_1 -uRx Data dTSS_m uBus_n (Transmitting branch n ) dTSS_n uStarTx active 300mV 0V Idle Data_0 t Data_1 -300mV -uStarTx active Figure 4.2.2: Signal timing between receiving branch m and transmitting branch n at the frame start uBus_m (Receiving branch m) uRxData Data_1 Data_0 Data_1 150mV 0V -150mV t -uRx Data uBus_n (Transmitting branch n ) dStarDelay 10 dStarDelay01 uStarTx active 300mV Data_1 Data_0 Data_1 0V t -300mV -uStarTx active Figure 4.2.3: Signal timing between receiving branch m and transmitting branch n ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 18/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 uBus_m (Receiving branch m) uRxData 150mV 30mV 0V -150mV Data_0 Data_1 Idle t -uRx Data dFES1_m uBus_n (Transmitting branch n ) dFES1_n uStarTx active 300mV Data_0 Data_1 Idle 30mV 0V t -300mV -uStarTx active Figure 4.2.4: Signal timing between receiving branch m and transmitting branch n at the end of a frame uBus_m (Receiving branch m) 0V -30mV -300mV t Idle Data_0 Idle -uRx Data dSymbol _m uBus_n (Transmitting branch n ) 0V -30mV -300mV dSymbol _n t Idle Data_0 Idle -uStarTx active Figure 4.2.5: Signal timing between receiving branch m and transmitting branch n at a symbol ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 19/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 4.2.3 Branch Receiver Input When the branch is in an idle or receiving phase the terminal behaviour of the ASD is determined by the biasing voltage and the input voltage divider. Fig. 4.2.6 shows a simplified equivalent circuit. iBP Receiver input = uBias BP RCM1 RCM2 BM GND iBM Figure 4.2.6: Biasing circuit of the receiver 4.2.4 Branch Transmitter Output Data_0 Data_1 Idle (low Idle power) uBus uCM uBP uBM t Figure 4.2.7: Bus signal in the Idle (low power), Idle (both biased by the receiver) and active state (driven by the receiver) In the Idle state the bus voltages uBP and uBM are about zero, if the ASD is in a low power mode (AS_Standby or AS_Sleep). After entering the mode AS_Normal the receiver input circuit drives the bus voltage to uBias (via the resistance RCM1 or RCM2). ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 20/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 4.3 CC-and Host-Interface 4.3.1 Block Diagram Of An ECU With ASD The E981.57 may be housed in a FlexRay node with host and communication controller. It is possible to send and receive data from/to the local ECU via the communication controller interface (TXD, TXEN, RXD). The host has the full access for mode control and diagnosis via Host-IF (SPI+INTN). VBAT 4 Supervisor Communication Controller TxEN TxD RxD RSTN VIO VCC SPI INTN Local Wake-up LWU ECU 1 Power Supply Microcontroller (HOST) INH BGE Bus Driver E981.57 DCN additional intra star interface if needed Bus Driver E981.57 TRXD0 TRXD1 VBUF BP_1 BM_1 BP_2 BM_2 GND Figure 4.3.1: The active star device (ASD) positioned at an ECU An ECU board with an active star (fig. 4.3.1) includes the controller (host and CC or host including CC, respectively), the ASD itself and the power supply unit. The supply voltages are derived from the voltage VBAT. VBAT is the reverse bias protected alternator voltage. Optionally local wake-up (LWU) and bus guardian enable (BGE) are applicable. LWU is an additional possibility to wake the ASD (switch to AS_Normal). BGE=0 disables the transmitting function from TXD to all branches. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 21/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 Controller ECU VBAT Power Supply VIO VIO SCSN1 (HOST) INTN2 Communication INTN1 Microcontroller SDO SDI SCSN2 Supervisor SCK VECU BGE TxEN Local Wake-up LWU DCN TxD RxD VIO VCC INH E981.57 Device 2 (banked) BP1 BM1 BP2 SPI+INTN2 SPI+INTN1 TRXD0 TRXD0 TRXD1 TRXD1 VBUF VBUF BM2 BM1 GND INH VCC VIO RxD TxD E981.56 Device 1 (CC and Host IF used) BP1 BM2 BP2 BM3 TxEN LWU DCN BM4 BP3 Local Wake-up BP4 GND Figure 4.3.2: Two banked star couplers for stars up to 6 buses Two banked active star devices (ASDs) at fig. 4.3.2 are connected via the intra star interface (TRXD0 and TRXD1). It extends the FlexRay AS to more branches. The open drain output concept with external pull up resistors permits the extension to further ASDs. In this example the right ASD is connected to the Communication Controller of a local ECU. The second ASD extends the number of branches e.g. 6. Its CC interface is unused. The host shall address the SCSN pins of both ASDs. Also INTN1 and INTN2 are connected separately to the host. 4.4 Communication Controller Timing 4.4.1 Signal Timing Between CC- And Bus-Interface The figures 4.4.1 - 4.4.4 show the timing behavior of the signal paths from the CC-Interface to the bus lines at the branches and vice versa. The parameters are specified in section 3.4.3. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 22/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 4.4.1.1 Signal Timing Bus To RXD: Idle-Active And Active-Idle Transition uBus dBusRxia dBusRxai 0V -30mV t -150mV -300mV -uRx dBusActive dBusldle dStarRxia VRxD/VIO dStarRxai 1 0.5 0 Figure 4.4.1: Signal bus to RXD: Transition Idle to Active and vice versa No. Parameter Symbol Min. Max. Unit uBus 400 3000 mV Transition time Idle to Data_0 dBusRxia 18 22 ns 3 Transition time Data_0 to Idle dBusRxai 18 22 ns 4 Data_0 time dBusActive 590 810 ns 5 Idle time dBusIdle 590 810 ns 1 Differential bus voltage at the receiver input 2 Table 4.4.1: Bus signal parameter of the receiver test (Active/Idle detection) 4.4.1.2 Signal Timing Branch Bus to RXD: Data Transition uBus dBusRx10 dBusRx01 uRxData 300mV 150mV 0V -150mV -300mV t -uRx Data dBusRx0Star VRxD/VIO dStarRx10 dBusRx1 Star dStarRx01 1 0.5 0 Figure 4.4.2: Signal bus to RXD: Transition Data_1 to Data_0 and vice versa ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 23/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 No. Parameter Symbol Min. Max. Unit uBus 400 1 Differential bus voltage at the receiver input 3000 mV 2 Transition time Data_1 to Data_0 dBusRx10 22.5 ns 3 Transition time Data_0 to Data_1 dBusRx01 22.5 ns 4 Time span Data_0 dBusRx0Star 80 4320 ns 5 Time span Data_1 dBusRx1Star 80 4320 ns Table 4.4.2: Bus signal parameter of the receiver test 4.4.3 Signal Timing TXEN To Bus: Idle-Active And Active-Idle Transition VTxEN/VIO dTxENLOW 1 0.5 0 dStarTxia dStarTxai uBus 0V -30mV t -300mV -uStarTx active dBusTxia dBusTxai Figure 4.4.3: Signal TXEN to bus: Transmitter behavior at Idle to Active transition and vice versa Note: BGE=1 is assumed. The signal TXEN controls the start and the end of the transition. TXD=0 is assumed in the figure above. No. 1 Parameter Time span of bus activity Symbol Min. dTxENLOW 550 Typ. Max. Unit 650 ns Table 4.4.3: Parameter of the TxEN input signal of the transmitter test The E981.57 provides the High-Low transient of TxEN at the start of a frame or a symbol, if the TxD signal has already the low level state. A time span of dStarTxreaction after the Low-High transition of TxEN, the E981.57 suppresses any reaction on canges at TxD. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 24/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 4.4.1.4 Signal Timing TXD To Bus: Data Transition VTxD/VIO 100...4400ns 1 0.5 0 dStarTx 10 dStarTx 01 uBus uStarTx active 0.6*uStarTxactive 300mV 0V t -300mV -0.6*uStarTxactive -uStarTx active dBusTx10 dBusTx 01 Figure 4.4.4: Transmitter behavior while transmitting Data_0 and Data_1 Note: BGE=1 and TxEN=0 are assumed. 4.4.2 Loop Back TxEN – RxD A symbol transmission sent by the Communication Controller shows the low state of TxEN and TxD. The end of the symbol transmission is accompanied by the 0-1 transient of TxEN and RxD (idle state). The time span between the TxEn and RxD transition is defined as dStarTxRxai. 4.5 Host Interface Control The interface between host (master) and ASD (slave) comprises a Serial Peripheral Interface (SPI) plus INTN with the signals and their corresponding pins: • SCSN - SPI chip select (low active) • SCK - SPI clock (input signal) • SDI - SPI input data (from the host to the ASD) • SDO - SPI output data (from the ASD to the host) • INTN - additional pin for wake event and error sum signals (low active) There are two possibilities to use the SPI: • The host interface commands are compatible to the requirements of the EPL specification [EPL09], if the pin 43 (DCN) is connected to VIO (signal DCN=1) • The host interface commands are compatible to the former ASD E910.56B, if the pin 43 (DCN) is connected to GND (signal DCN=0) An external reset of the Active Star Device is possible by a signal RSTN=0 at the pin RSTN. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 25/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 4.5.1 Timing of the SPI The properties of the SPI are: • The SPI required a pure master-slave protocol with host controller as master • Only one register is accessible within one telegram • The SPI access is within the LOW state of SCSN • The frequency of the clock at SCK is defined by fSPI. The clock polarity is fix CPOL = 0 • The MSB is the first transmitted bit, the LSB the last one • The shift out is done at the rising edge of SCK, the shift in at the falling edge of SCK • dspis is the setup time of from the 1-0 transient of the SPI selection signal SCSN to the 0-1 transient of the first clock of SCK • dspih is the hold time of from the 1-0 transient of the 16th clock of SCK to the 0-1 transient of the SPI selection signal SCSN • The time between two consecutive SPI accesses is defined as dSPId. Figures 4.5.1 and 4.5.2 illustrate the SPI signal flow. dspih dspis SCSN 16 clocks/cycle 1 SCK 2 3 4 15 16 sample (AS) SDI X MSB 14 13 12 1 LSB X 13 12 1 LSB float sample (host) SDO float X MSB 14 Figure 4.5.1: SPI diagram based on 16 clocks per cycle ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 26/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 dspid READ registers cycle SCSN READ CMD NEXT COMMAND PREVIOUS DATA DATA FROM STAR COUPLER SDI SDO ... ... SCK READ and RESET registers cycle SCSN ... SCK ... SDI READ/RES CMD NEXT COMMAND SDO PREVIOUS DATA DATA FROM STAR COUPLER WRITE registers cycle SCSN ... SCK ... SDI WRITE CMD NEXT COMMAND SDO PREVIOUS DATA DATA FROM STAR COUPLER Figure 4.5.2: SPI diagrams of the Read, Read-Reset and Write procedures ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 27/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 4.5.2 SPI Registers With Enhanced Instruction Set The SPI commands and messages are compatible with the requirements of the EPL specification V3.0 [EPL09]. Register Entries (Conditions: VDCN=VIO => enhanced instruction set) Bit SDI SDO 15 WRITE AS_MODE[1] 14 RESET AS_MODE[0] 13 ADR[3] ADR[3] 12 ADR[2] ADR[2] 11 ADR[1] ADR[1] 10 ADR[0] ADR[0] 9 reserved (has to be set to 0) APM-Flag 8 PARITY PARITY 7 W_DATA[7] R_DATA[7] 6 W_DATA[6] R_DATA[6] 5 W_DATA[5] R_DATA[5] 4 W_DATA[4] R_DATA[4] 3 W_DATA[3] R_DATA[3] 2 W_DATA[2] R_DATA[2] 1 W_DATA[1] R_DATA[1] 0 W_DATA[0] R_DATA[0] Table 4.5.1: SPI register entries 4.5.2.1 SPI Input Description (SDI) Name Description WRITE W_DATA[7:0] will be evaluated, if this bit is set to 1, otherwise it will be ignored. RESET When set to 1, all error registers, the POR_FLAG and WU sources will be reset to the corresponding reset values after the SPI access. ADR[3:0] Sets the address of the register that will be output during next SPI access. Defines the address of the register that will be written (only if WRITE = 1) and that will be output during next SPI access. PARITY Odd parity bit for both SDI command bytes. W_DATA[7:0] Write data. Only evaluated if WRITE = 1. See register description for effects. Table 4.5.2-a: SPI input description ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 28/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 4.5.2.2 SPI Output Description (SDO) Name Description AS_MODE[1:0] Signals the current MODE of the ASD. 01: ASD is in Normal Mode 10: ASD is in Standby Mode 11: ASD is in Sleep Mode ADR[3:0] Signals address of register that is output with the current SPI access. APM-Flag Signals if the ASD is in autonomous power mode (APM) PARITY Odd parity bit for both SDO output bytes. R_DATA[7:0] Read data corresponding to ADR[3:0] of the current output word. See register description for details. Table 4.5.2-b: SPI output description 4.5.2.3 SPI Registers Name Adress Description ASD_ERR 0x0 global error register BR_ERR 0x1 branch error register Wake-up 0x2 wake-up source register ASD_CFG 0x3 global configuration register BR1_CFG 0x4 branch 1 configuration register BR2_CFG 0x5 branch 2 configuration register Register ASD_ERR (address 0x0) MSB Content LSB VBATOK VIOOK VCCOK VBUFOK - POR OTEMP TXENL Reset value 1 1 1 1 0 * 0 0 Access modes R R R R R R R R Bit description VBATOK : 0 if uVBAT < uStarUVVBAT VIOOK : 0 if uVIO < uStarUVVIO VCCOK : 0 if uVCC < uStarUVVCC VBUFOK : 0 if uVBUF < uStarUVVBUF OTEMP : 1 if Tj > Tover TXENL : 1 if TXEN = 0 for longer than dStarTxActiveMax POR : POR occurred (1 after POR, 0 after RESET command) Table 4.5.3-a: Register ASD_ERR. Note: This register contains global error flags of the ASD. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 29/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 Register BR_ERR (address 0x1) MSB Content LSB NOISE_B1 NOISE_B2 - - LINE_B1 LINE_B2 - - Reset value 0 0 0 0 0 0 0 0 Access modes R R R R R R R R Bit description NOISE_Bn : 1 when a noise error occurred at branch n (noise for longer than dBranchRxActiveMax) LINE_Bn : 1 when a line error occurred at branch n Table 4.5.3-b: Register BR_ERR. Note: This register contains branch error flags. Register WAKE-UP (address 0x2) MSB Content LSB RWU_B1 RWU_B2 - - - TRXD LWU SPI Reset value 0 0 0 0 0 0 0 0 Access modes R R R R R R R R Bit description RWU_Bn : remote wake-up via branch n TRXD : wake-up via activity on TRXD bus LWU : wake-up because of a level change of the LWU pin SPI : wake-up via SPI command Table 4.5.3-c: Register WAKE-UP Note: This register signals the last wake-up source. Register ASD_CFG (address 0x3) MSB LSB AS_ AS_ APM_FLAG MODE[1] MODE[0] Content - Reset value 0 1 0 R R/W R/W Access modes Bit description - - LWU_VIO MASK_ VBATUV 1 0 0 1 0 R/W R R R/W R/W AS_MODE : sets/reads AS_MODE 01 means Normal Mode 10 means Standby Mode 11 means Sleep Mode 00 (write) means no mode change APM_FLAG : 1 means that the ASD is in autonomous power mode (APM) LWU_VIO : 1 means that LWU uses VIO-level threshold VTH_LWU_VIO else VBAT-level threshold VTH_LWU_VBAT MASK_VBATUV : 1 means that undervoltage at VBAT doesn’t reset VBATOK in register ASD_ERR Table 4.5.3-d: Register ASD_CFG Note: This register contains the global ASD configuration. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 30/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 Register BR1_CFG (address 0x4) MSB LSB Content - - - - Reset value 0 0 0 0 0* 0* 0* 0* Access modes R R R R R/W R/W R/W R/W Bit description RWU_DIS TX_DIS RX_DIS TX_ONLY RWU_DIS : 1 means that this branch won’t react to any incoming remote wake-up in the next low power mode reset after next wake-up TX_DIS: 1 means that the transmitter of this branch is disabled RX_DIS: 1 means that the receiver of this branch is disabled TX_ONLY: 1 means that transmitting is allowed if Idle has been received in Branch_ FailSilent * BR1_CFG is reset after wake-up Table 4.5.3-e: Register BR1_CFG Note: This register contains the branch configuration for branch 1. Register BR2_CFG (address 0x5) This register contains the branch configuration for branch 2. See BR1_CFG for details. 4.5.2.4 SPI Access In The ASD Operation Modes ASD operation mode Read Read/Reset Write AS_Normal Full access Full access Full access AS_Standby Full access Full access Full access AS_Sleep Only: Register ASD_ERR (0x0) Not operable Only register AS_CFG (0x3) AS_Off No access No access No access Table 4.5.3-f: SPI access Note: Prerequisite is that VIO and (if required) VCC are available. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 31/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 4.5.3 SPI Register Compatible To E910.56B The downward compatibility to the former version of the active star device (E910.56B) is given by connecting DCN to GND (hard wired condition). Exception: Only a generic bus error flag is set. Register Entries (Conditions: VDCN=0 Y downward compatible to E910.56B) clk Bit SDI_E910.56B SDO_E910.56B 1 15 CMD [1] AS_OPM 2 14 CMD [0] BRANCH_ADR [1] 3 13 BRANCH_ADR [1] BRANCH_ADR [0] 4 12 BRANCH_ADR [0] BRANCH_OPM [1] 5 11 BRANCH_OPM [1] BRANCH_OPM [0] 6 10 BRANCH_OPM [0] 0 (former ULOAD) 7 9 AS_OPM 0 (former OLOAD) 8 8 X Y Branch_n_Line_Error (n respective to Branch_ADR) (former BM2VSUP) 9 7 MASK_VBATOK=0 Y Branch_n_Line_Error (n respective to Branch_ADR) (former BM2GND) 10 6 Disable RWU Branch 1 Y Branch_n_Line_Error (n respective to Branch_ADR) (former BP2VSUP) 11 5 Disable RWU Branch 2 Y Branch_n_Line_Error (n respective to Branch_ADR) (former BP2GND) 12 4 Disable RWU Branch 3 TXENL 13 3 Disable RWU Branch 4 OTEMP 14 2 X VBATOK 15 1 X VIOOK 16 0 X VCCOK Table 4.5.4: Register entries with E910.56B compatibility • • • • The failure registers (Table 4.5.4) are cleared within the read and reset command (see Read-Reset cycle in the diagram below) or wake-up. The register entries of the mode control and branch addressing are not affected by the read/reset command. The host can control a part of the ASD transitions (from AS_Normal to AS_Standby and vice versa) The host can enable/disable the Tx, Rx and RWU functionality of each branch separately. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 32/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 CMD[1:0] CMD[1] CMD[0] Action Note 0 0 READ READ registers (SDI bits 0…13 are ignored): the bits 5…12 are related to the branch (previous set address seen in bits 14 and 13), the other bits show generic values of the AS; 0 1 READ /RESET Read and reset, reset of the failure registers (SDI bits 0…13 are ignored), reset of the failure registers of all branches 1 0 WRITE WRITE registers 1 1 SET BRANCH ADDRESS Set branch address only (SDI bits 0…11 are ignored) Table 4.5.5-a: SPI command CMD[1:0] BRANCH_ADR[1:0] CMD[1] CMD[0] Action Note 0 0 Addresses Branch 1 0 1 Addresses Branch 2 Branch m means that that the following SPI access will show the SDO failure bits 5…10 of the branch m. The default value after power up is the address of branch 1. 1 0 1 1 Table 4.5.5-b: Setting of the branch address BRANCH_ADR[1:0] AS_OPM AS_OPM Command Note 0 NORMAL MODE Goto AS_Normal, AS_OPM=0 is the default value after power on. 1 STANDBY MODE Goto AS_Standby_NAPM Table 4.5.5-c: SPI command CMD[1:0] BRANCH_OPM[1:0] BRANCH_ BRANCH_ Command OPM[0] OPM[1] 0 Note Branch is able to send data from the bus to the central logic and to transmit data from the central logic to the bus. BRANCH_OPM=[0,0] is the default value after power on. 0 ENABLE_ BRANCH_RX/ ENABLE_ BRANCH_TX 1 Branch is not able to receive data from the bus but it can DISABLE_ BRANCH_RX/ transmit data from the central logic to the bus (transmit ENABLE_ BRANCH_TX only). 0 ENABLE_ BRANCH_RX/ DISABLE_ BRANCH_TX 1 Branch is neither able to receive data from the bus to the DISABLE_ BRANCH_TX/ central logic nor to transmit data form the central logic to DISABLE_ BRANCH_TX the bus. 0 1 1 Branch is able to send data from the bus to the central logic and not to transmit data form the central logic to the bus (receive only). Table 4.5.5-d: Branch operation mode ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 33/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 4.5.4 INTN Output If any error occurs (undervoltage signals are low or another failure flag in the tables 4.5.3-a, 4.5.3-b or 4.5.4 is high, the failure sum signal INTN becomes low. The INTN also signals wake-up events, when DCN=1. INTN Action Note 0 Active low Error or wake sum signal, also usable as interrupt 1 Inactive Table 4.5.6: INTN output signal 4.6 Intra Star Interface • • • • All FlexRay signal paths pass the I/O pins TRxD0 and TRxD1. 2 external pull up resistors connect TRxD0 and TRxD1 with VBUF. The signals uTRxD0 and uTRxD1 represent the signal states of Data_0, Data_1 and Idle. The intra star interface permits to bank two or more star couplers to an active star with 8 ore more branches. TRxD1 TRxD0 uBus (input) uBus (output) RxD 1 1 Idle Idle 1 0 1 Data_1 Data_1 1 1 0 Data_0 Data_0 0 0 0 Collision X X Note Table 4.6.1 Assign of the signals TRXD0 and TRXD1 4.7 Bus Guardian Interface The pin BGE enables the ability to transmit signals from TxD to the buses. The Bus Guardian or another controlling device can prevent the propagation of data from the CC to the branches and to TRXD by setting BGE=LOW. BGE Action 0 Disable Tx from local CC 1 Enable Tx from local CC Note BGE has no impact to the branch to branch data propagation. Table 4.7.1 Signal Bus Guardian Enable 4.8 Level Shift Interface The pin VIO permits to use Communication Controller Interfaces, Host Interfaces, Bus Guardian Interfaces and DCN signal with HIGH levels of 5.0V or 3.3V. VIO supplies the interface inputs (SCSN, SCK, SDI, TxD, TxEN, BGE and DCN) and outputs (SDO, INTN and RxD). ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 34/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 4.9 Operation Modes Of Active Star Device 4.9.1 Active Star Operation Modes • The Active Star Device supports 3 operation modes: AS_Normal, AS_Standby and AS_Sleep (two low power modes). • A fourth state AS_Off is defined when the Active Star Device is unsupplied. • The modes (defined in chapter 4.9.2) of the branches are derived from the AS operation modes. 4.9.1.1 AS_Off • • • • The internal supply voltage of the central logic VDD is lower than the threshold uStarUVVDDoff , and no analog and digital functions are possible. In this case neither VBAT nor VCC are able to provide the voltage for the internal voltage VDD. All branches are in the state Branch_Off. INH shows the signal Sleep (high impedance output). If VDD becomes higher than uStarUVVDDon the ASD resets all logical states and the active star device leaves AS_Off and enters AS_Standby. 4.9.1.2 AS_Standby • • • • • • • • • The mode AS_Standby mode is a low power mode (reduced supply current). The branches are forced to Branch_LowPower, The INH signals Not_Sleep (INH shows high on VBAT level). The bus wires are terminated to GND via the receiver input resistances RCM1 and RCM2. After power-on the ASD enters AS_Standby in the autonomous power moding (flag APM=1). The mode change is controlled by voltage monitoring and wake-up events only. A dedicated host command resets APM. Therefore the SPI commands for mode control are applicable. If the host control sets APM=1 the autonomous power moding is activated (no access by SPI commands but reset of the APM flag). The ASD is able to detect remote wake-up at the branches (RWU), TRXD0, TRXD1 activities and local wake-up events (LWU) and enters AS_Normal (if the supply voltages are available). The ASD is able to monitor the supply voltages (VCC and VBAT) and the reference voltage (VIO) and to change to the corresponding power modes. The SPI registers are readable and writeable (including commands for mode change) 4.9.1.3 AS_Normal Mode • The ASD is able to receive data from the bus lines and TRXD0, TRXD1 to the central logic. • The ASD is able to transmit data from one bus line, TRXD0, TRXD1 and TxD to the remaining bus lines, and TRXD0, TRXD1. • Not_Sleep is signaled on the AS – power supply interface (the INH signal is high on VBAT level). • If all branches are in Branch_Idle or Branch_FailSilent for longer than dStarGoToSleep, the active star enters AS_Sleep. • If the APM flag is 0, the host is able to drive the AS in the AS_Standby mode. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 35/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 AS_Sleep mode • • • • • • • • • The AS_Sleep mode is the 2nd low power mode with very low power consumption. The AS is not able to send or receive data from the buses, but the remote and local wake-up monitoring functions are active. The branches are forced to Branch_LowPower The INH shows high impedance. The bus lines are terminated to GND via receiver input resistances RCM1 and RCM2. The ASD is able to detect remote wake-up at the branches (RWU), TRXD0, TRXD1 activities and local wake-up events (LWU) and enters AS_Standby and AS_Normal (if the supply voltages are available). The ASD is able to monitor the supply voltages (VCC and VBAT) and the reference voltage (VIO) and to change to the corresponding power modes. The logical states remain stored. A reduced access to the host interface is possible (reading of register 0x0) 4.9.2 Operation Mode Transitions Of The Active Star Device (ASD) The transitions are depicted in the following state diagram of fig. 4.9.1. It shows the 4 states AS_Off, AS_Standby, AS_Normal and AS_Sleep. There are two kinds of control of the power mode. 1. The autonomous power moding (flag APM=1) is the default value after power-on. If the ASD has no host interface or the host interface is out of operation or the level shift interface voltage VIO is not available, the ASD states can enter and leave all states by wake-up events, undervoltage signals and timeouts of data traffic. 2. The non-autonomous power moding (flag APM=0) can be set by host control. The host can drive the ASD in all states (provided that the corresponding supply voltages are available). The host can set APM=1 and leave its control. The control of the autonomous power moding has higher priority than the host control. Transitions forced by undervoltage conditions have the highest priority, followed by wake-up events. The control by host commands (APM=0) has the lowest priority. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 36/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 AS_Normal AS_Normal_ NAPM AS_Normal_ APM 11, H1 10 AS_Normal_ APM_RWU H2 12 H3 2 8 3 9 AS_Standby 4 AS_Standby_ NAPM 5, H5 AS_Standby_ APM H3 1 AS_Off (unsupplied) 7 6 H4 13 AS_Sleep Figure 4.9.1: State diagram of the modes of the Active Star Device Transition Conditions Notes 1 Power on (VDD > uStarUVVDDon) Power up of VBAT or VCC feed the internal supply voltage VDD, reset of all logical states, monitoring of VBAT,VCC, VIO, VDD and VBUF 2 uVCC > uStarUVVCC 3 uVCC < uStarUVVCC ‘AND’ dStarUVVCC expired 4 dStarGotoSleep expired Bus signals, TRXD, TXEN, SPI and LWU are not active. 5 uVIO < uStarUVVIO ‘AND’ dStarUVVIO expired ASD sets APM=1, (wake-up events and undervoltage have higher priority than host control) 6 dStarGotoSleep expired TRXD, SPI and LWU are not active. 7 (RWU ‘OR’ LWU ‘OR’ activity at TRXD-IF ‘OR’ SPI_WU) 1) 2) ASD sets APM=1 8 (RWU ‘OR’ LWU ‘OR’ activity at TRXD-IF ‘OR’ SPI_WU) ‘AND’ uVCC < uStarUVVCC 1) 2) Immediate entry in AS_Normal also at undervoltage of VCC is necessary for the propagation of the wake-up symbols, power is supplied by external capacitors, ASD sets APM=1 9 dStarWake-upGotoStandby expired ‘AND’ uVCC AS returns to AS_Standby after transmitting of < uStarUVVCC wake-up symbols, if VCC shows undervoltage 10 uVCC > uStarUVVCC 11 uVIO < uStarUVVIO ‘AND’ dStarUVVIO expired 12 uVCC < uStarUVVCC ‘AND’ dStarUVVCC expired Set APM=1 13 Power off (VDD < uStarUVVDDoff) Transition can start from any state. H1 Host command Goto Normal_APM Host sets APM=1 AS sets APM=1 ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 37/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 Transition Conditions Notes H2 Host command Goto Normal_NAPM Host sets APM=0 H3 Host command Goto Standby_NAPM Host sets APM=0 H4 Host command Goto Sleep ASD sets APM=1 H5 Host command Goto Standby_APM Host sets APM=1 1) Wake-up events are: local wake-up (LWU) via LWU pin ‘OR’ remote wake-up (RWU) ‘OR’ activity at TRXD interface (if banked active star devices are applied) 2) SPI_WU is the transition from AS_Sleep or AS_STANDBY after setting the SPI register ASD_CFG (see table 4.5.3-d and section 4.10.3)) 4.9.3 Operating States Of The Branches 4.9.3.1 Branch_Off • The branches fall in the state Branch_Off, if the ASD has entered AS_Off. • uBus between the pins BP_m and BM_m shows Idle. • The input bus currents iBP and iBM are less than iBPleak, iBMleak 4.9.3.2 Branch_LowPower • Condition: The ASD has entered AS_Standby or AS_Sleep. • Branch transmitter and branch receiver functions are disabled. • RWU function is active and can signal a remote wake-up event from the bus to the central logic. 4.9.3.3 Branch_RWUDisabled • • • • Condition: The ASD has changed from AS_Normal to AS_Standby or AS_Sleep and the host has set Disable_Branch_RWU previously. Branch transmitter and branch receiver functions are disabled. The RWU is deactivated. The branch has lower power consumption (significantly in AS_Sleep). 4.9.3.4 Branch_Idle • • • • Condition: The ASD is in AS_Normal and presently there are no data to be sent from any other branch, TRXD-Interface or CC-Interface to the bus. If ASD enters AS_Normal, the branches are forced to Branch_Idle firstly. The transmitter function is disabled. The receiver function attends the bus activity on this branch and signals bus activity to the central logic. 4.9.3.5 Branch_Transmit • Condition: The ASD is in AS_Normal and the branch shall transmit data from any other branch, TRXD-Interface or CC-Interface to the bus. • The receiver function attends the own bus activity and loops back to the central logic. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 38/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 4.9.3.6 Branch_Receive • • • Condition: The ASD is in AS_Normal and the branch receiver has detected activity on the bus. The branch receives the data from the bus and sends them to the other branches, RXD and the TRX_IF. A timer checks if the non interrupted data stream is longer than the noise detection time dBranchRxActivemax. Then the propagation of the received data is stopped. The branch is forced to Branch_FailSilent. 4.9.3.7 Branch_FailSilent • • • Condition: The ASD is in AS_Normal and dBranchRxActivemax has expired. The branch prevents the propagation of the wrong data stream until the next Idle phase occurs at all other signal sources (bus interface of all branches, TRXD interface, CC interface). After recognizing Idle the branch enters Branch_TxOnly, if APM=1 or a dedicated host command is set before. 4.9.3.8 Branch_TxOnly • • • • • Condition: The ASD is in AS_Normal and the branch is forced from Branch_FailSilent. The branch does not receive data from the bus but is able to transmit to the bus. The results of the bus error detection are available after the transmitting of the next frame to the bus. The branch enters Branch_Idle if no bus error has occurred (Branch_m_Line_Error=0, Note: The error flag is reset after the corresponding SPI access.) The branch returns to Branch_FailSilent if a bus error has occurred (Branch_m_Line_Error =1) ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 39/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 4.9.4 Branch Operating State Transitions AS_Standby AS_Sleep 1 AS_Off Branch_ LowPower Branch_ RWUDisabled H4 Branch_Off 11 12 13 AS_Normal Branch _ Disabled 2 Branch_ TxDisabled Branch_ RxDisabled H2 H1 Branch_Idle 4 5 3 6 Branch_ Receive Branch_ Transmit 9 7 10 Branch_ FailSilent Branch_ TxOnly 8, H3 Figure 4.9.2: State diagram of the branch states ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 40/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 Transition Conditions Notes 1 ASD enters AS_Standby After power up of VBAT or VCC 2 ASD enters AS_Normal Repetition of the BranchRWU_disable host command after re-entering AS_Normal is necessary. 3 Signal router of the central logic sets the branch to transmit A signal from another branch, TRXD0/TRXD1, TXD shall be transmitted 4 Signal router of the central logic resets the branch from transmit The transmission of a frame or symbols has finished 5 The branch has recognized a signal at its bus line. The signal router of the central logic sets the branch to receive All branches, TRXD-IF and the CC-IF has shown Idle before. 6 The branch has recognized Idle at its bus line. The signal router of the central logic waits for the next signal from any branch, TRXD-IF or CC-IF . 7 dBranchRxActivemax expired Noise, bus line short circuit or bubbling idiot is assumed 8 Idle on all branches CC-IF and TRXD-IF recognized ‘AND’ (APM=1 ‘OR’ TX_ONLY) Propagation of faultily received signals shall be prevented, but transmitting (with included bus error detection) remains active. 9 BusError=0 Bus error detection is possible after the transmitting of a frame on this branch. 10 BusError=1 11 ASD enters AS_Standby ‘OR’ enters AS_Sleep ASC mode change forces branch states 12 ASD enters AS_Off Starting from any state within AS_Standby or AS_Sleep (ASD is unsupplied). 13 ASD enters AS_Off Starting from any state within AS_Normal (ASD is unsupplied). H1 Host command (SPI) disables Rx ‘OR’ Tx functionality H2 Host command (SPI) cancels the disabled TX and/orRx functionality Reset of the disable state (TX or RX) H3 Host command (SPI) for Tx see transition 8 H4 ASD enters AS_Standby ‘OR’ enters AS_Sleep ‘WHILE’ disabled RWU function A host command has disabled the RWU detector already. The flag Branch_RWUDisabled will be reset after leaving AS_Standby or AS_Sleep. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 41/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 4.10 Wake-up Capabilities 4.10.1 Remote Wake-up (RWU) Remote wake-up (RWU) wakes the ASD from a low power mode to enter AS_Normal. The wake-up patterns are received from the bus) Idle 1st Data_0 phase dWU0DetectMin dWU0DetectMax 1st Idle or Data_1 phase 2nd Data_0 phase 2nd Idle or Data_1 phase dWU Phase3 dWU Phase4 dWUIdleDetectMin dWUIdleDetectMax uBus dWU Phase0 dWU Phase1 dWU Phase2 dWU Figure 4.10.1: Differential bus signal of a wake-up pattern Fig. 4.10.1 shows the signal uBus of a wake-up pattern consisting of two wake-up symbols (WUS). Starting point is the Idle-Active transition after an idle phase (dWUPhase0). The duration of the following Data_0 phase is dWUPhase1. The Data_0 state is detected between dWU0DetectionMin and dWU0DetectionMax. The resulting condition is dWUPhase1 > dWU0DetectionMax. The following Idle phase (alternatively Data_1 is possible, see the dotted line of uBus) is detected in the time dWUIdleDetection. The detection of Data_0 and Idle (or Data_1) occurs in the same manner. The detection of the full wake-up pattern (with the duration dWU) has to be happen within dWUTimeout, otherwise RWU is not detected. dWU-Phases < dWU0DetectionMin are not recognized. Thus, the ASD E981.57 wakes up by the mean of a specially configured payload of a frame: 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF The wake-up mechanism is depicted in fig. 4.10.2 as state diagram. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 42/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 Power on Wait I’ Idle (Data_1) on bus Data_0 for longer than dWUInterrupt dWUIdleDetect expired Wait S’ dWUTimeout expired Data_0 on bus Idle (Data_1) for longer than dWU Interrupt dWU0Detect expired Wait A’ dWUTimeout expired Idle (Data_1) on bus Data_0 for longer than dWUInterrupt dWUI dleDetect expired Wait B’ dWUTimeout expired Data_0 on bus Idle (Data_1) for longer than dWU Interrupt dWU0Detect expired Wait C’ Wake up Idle (Data_1) on bus Data_0 for longer than dWUInterrupt Start dWUIdleDetect Initial state Start dWU0Detect Start state Start dWUIdleDetect dWU Timeout expired Wait state A Start dWU0Detect dWU Timeout expired Wait state B Start dWUIdleDetect dWU Timeout expired Wait state C dWUIdleDetect expired Figure 4.10.2: Sequence of operations at RWU After RWU the ASD enters AS_Standby and then AS_Normal. If uVCC > uStarUVVCC the ASD remains in AS_Normal (see state diagram of the ASD in fig. 4.x.x). If uVCC ≤ uStarUVVCC the ASD enters AS_Normal_APM_RWU to propagate wake-up symbols. The ASD returns to AS-Standby after dStarWake-upGotoStandby. The number of the branch which received a valid wake-up pattern is stored in a SPI register. 4.10.2 Local Wake-up (LWU) The E981.57 has a local wake-up capability at the pin LWU. A negative or positive pulse that crosses the thresholds VIH_LWU or VIL_LWU and is longer than dWakePulseFilter is recognized as wake-up event. The LWU signal is GND related. The permissible signal voltage V_LWU is from the minimum of uVIO up to the maximum of VBAT. As result the ASD leaves AS_Sleep and enters AS_Standby and AS_Normal (if uVCC > uStarUVVCC). There is no internal pull up or pull down circuit. 4.10.3 Wake-up By SPI Command And TRXD Activity The ASD also leaves AS_Sleep after the dedicated SPI commands “1x00 110x x010 xxxx” (Goto_Normal_NAPM), “1x00 110x x011 xxxx” (Goto_Normal_APM) or “1x00 110x x100 xxxx” (Goto_Standby_NAPM). “x” stands for don’t care. All “x”-ed bits are evaluated only if the ASD is in AS_STANDBY and the parity bit is correct. If the ASD is in a low power mode activities at the TRXD0, TRXD1 inputs lead to the mode change too. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 43/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 4.11 Power Supply Voltage Conditions • • • • The main power supply in Normal is an external voltage source with the voltage VCC. VCC (5V nominal) is necessary for operation in the AS_Normal. Transmitting and receiving data is possible only in the presence of VCC. An internal voltage VDD (3.3V) is derived from VCC or VBAT. VDD supplies the digital control block. If low or absent VBAT and VCC lead to a value of VDD lower than uUVDDoff, the ASD enters Off. If VDD recovers from undervoltage and becomes higher than uUVDDon the BD enters Standby. In the low power modes (Standby and Sleep) the BD is supplied by VBAT. The remaining functions permit the voltage monitoring, the mode control due to SPI commands and wakeup. In the mode BD_Sleep the switch between VBAT and INH shows high impedance. This signal may be used to switch off the external VCC. The communication controller interface, the host interface and the bus guardian interface (BGE input) are related to a common voltage level of VIO (3.3V or 5V nominal). uVBAT uVCC Possible operation modes Wake-up detection ≥ 7V UV Low power modes possible ≥ 7V 5V All operation modes possible UV 5V All operation modes LWU not possible 4.12 Active Star Device E981.57 Under Fault Conditions No. Fault description SBehavior at BP_x and BM_m Behavior at CC and host interface 1) BP_x and BM_x show high impedance (iBP≤iBPleak, iBM≤iBMleak) uSDO, uRXD show low level 1 AS is without any supply voltage 2 Undervoltage on the supAll transmitters are switched off ply voltages VBAT and VCC INTN=0, SPI register ASD_ERR bits VBATOK=0 and VCCOK=0, as long as uVDD>uVDDon 3 Undervoltage on VBAT (VCC available) No restrictions of functionality INTN=0, VBATOK=0 (SPI register) 4 Undervoltage on VIO (VCC ASD sends Idle to the branches available) INTN=0, SPI register ASD_ERR bit VIOOK=0 5 BP_x/BM_x line shorted to ground iBPGNDShortMax, iBMGNDShortMax 6 BP_x /BM_x line shorted to supply voltage 27V iBPBAT27ShortMax, iBMBAT27ShortMax 7 BP_x /BM_x line shorted to -5V iBP-5VShortMax, iBM-5VShortMax 8 BP_x line shorted to BM_x line iBPBMShortMax, iBMBPShortMax 9 BP_x/Bm_x receives data or noise longer than dBranchRxActiveMax Bus line error message (bit Line_Bx in SPI register BR_ERR) Bus line error message (bit Noise_Bx in SPI register BR_ERR) 1) Column is valid for signal uDCN=uVIO at pin DCN (enhanced SPI registers) ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 44/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 No. Fault description SBehavior at BP_x and BM_m Behavior at CC and host interface 1) 10 Error signaling lines (INTN and SDO) are interrupted 11 Error signaling lines (INTN and SDO) are shorted to ground 12 Error signaling lines (INTN and SDO) are shorted to VIO or VCC voltage 13 TxD line becomes interrupted AS branches send Data_0, when enabled by TxEN - 14 TxEN line becomes interrupted AS branches send idle state to the channels - 15 TxEN signal is permanent- After the timeout the AS sends idle ly asserted states to the channels ASD sets TXENL in SPI register ASD_ERR and INTN=0 16 AS detects an overtemperature condition ASD sets OTEMP in SPI register ASD_ERR and INTN=0 Error detection by host (e.g. write and read of a branch address). AS sends idle states to the channels 5 General 5.1 List of Abbreviations AS:Active Star ASD: Active Star Device BD: Bus Driver (transceiver) BM: FlexRay bus line (minus) BP: FlexRay bus line (plus) CC: Communication Controller DC: Direct current dXXX: Parameter prefix of a time duration ECU: Electronic Control Unit (also: node) EME: Electro Magnetic Emission ESD: Electro Static Discharge INTN: Interrupt (error sum signal, low active) LWU: Local wake-up OTP: One time programmable POR: Power on reset PTAT: Proportional to absolute temperature RWU: Remote wake-up (WU by pattern) SCK: SPI clock SCSN: SPI chip select (low active) SDI: SPI data input (ASD (=slave) viewpoint) SDO: SPI data output (ASD (=slave) viewpoint) SPI: Serial Peripheral Interface uXXX: parameter prefix of a voltage WU: Wake-up WUS: Wake-up symbol ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 45/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 5.2 Reference List To Symbol Names Of EPL Spec. 3.0 Name in Device Specification Name in EPL Specification V3.0 Description LWU WAKE Local wake-up pin or signal VBUF uVStarSupply Voltage for forwarding wake-up symbols also in undervoltage VCC uINH1Not_Sleep Output voltage at INH in AS_Normal and AS_Standby iINHleak iINH1leak Output current at INH in AS_Sleep) VIH_xx, uVDIG-IN-HIGH Threshold for detection high level of logic signals (xx is for TxEN, SCSN, SDI, SCK, BGE) VIL_xx uVDIG-IN-LOW Threshold for detection low level of logic signals(xx is for TxEN, SCSN, SDI, SCK, BGE) VIH_TXD uStarLogic_1 Threshold for detection high level of TxD VIL_TXD uStarLogic_0 Threshold for detection low level of TxD VOH_xx uVDIG-OUT-HIGH High level of a logic signal (xx is for RxD, SDO, INTN) VOL_xx uVDIG-OUT-LOW Low level of a logic signal (xx is for RxD, SDO, INTN) uVxx-OUT-UV uVVIO-OUT-UV Digital output voltage at under voltage VIO (xx is for RxD, SDO, INTN) uVxx-OUT-OFF uVVIO-OUT-OFF Digital output voltage at AS_Off (xx is for RxD, SDO, INTN) uINHNot_Sleep ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 46/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 6 Package Reference PACKAGE OUTLINE SPECIFICATION Date : 04.01.2012 The E981.57 is available in a Pb free, RoHS compliant, QFN44L9 plastic package according to JEDEC MO-220 VMMC1, except of exposed pad size and44 terminal length Flat (see drawing below).Package The package is classified to Moisture SenLead Quad Non Leaded 08SP0643.00 ASto sitivity Author: Level 3 (MSL 3) according to JEDEC J-STD-020C with a soldering peak temperatureQM-No.: of (260±5) °C. QFN44L9, variant 1 Special leadframe, the exposed pad size and the terminal length are not conform JEDEC MO-220 K. Description min mm typ max min in ch typ max A 0.80 0.90 1.00 0.031 0.035 0.039 Stan d off A1 0.00 0 .02 0.05 0.000 0.00079 0.002 Thickness of terminal leads, including lead finish A3 -- 0.20 REF -- -- 0.0079 REF -- Width of terminal leads b 0.25 0.30 0.35 0.010 0.012 0.014 Package length / width D/E -- 9.00 BSC -- -- 0.354 BSC -- D2 / E2 7.00 7.15 7.25 0.276 0.281 0.285 e -- 0.65 BSC -- -- 0.026 BSC -- Length of terminal for soldering to substrate L 0.45 0.55 0.65 0.018 0.022 0.026 Number of terminal positions N Package height Length / width of exposed pad Lead pitch Symbol 44 44 Note: the mm values are valid, the inch values contains rounding errors Note 1: for assembler specific pin1 identification please see QM-document 08SP0363.xx (Pin 1 Specification) Page 1 of 1 ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 47/48 QM-No.: 25DS0095E.00 E981.57 FLEXRAY™ ACTIVE STAR DEVICE PRODUCTION DATA - MAY 21, 2012 WARNING – Life Support Applications Policy ELMOS Semiconductor AG is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing ELMOS Semiconductor AG products, to observe standards of safety, and to avoid situations in which malfunction or failure of an ELMOS Semiconductor AG Product could cause loss of human life, body injury or damage to property. In development your designs, please ensure that ELMOS Semiconductor AG products are used within specified operating ranges as set forth in the most recent product specifications. General Disclaimer Information furnished by ELMOS Semiconductor AG is believed to be accurate and reliable. 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Unit London, 1BF GC Tower • No. 1088 Yuan Shen Road, Pudong New District • Shanghai, PR China, 200122 : +862151785178 Sales and Application Support Office Singapore ELMOS Semiconductor Singapore Pte Ltd. 60 Alexandra Terrace • #09-31 The Comtech • Singapore 118502 : +6566351141 : [email protected] : www.elmos.com : [email protected] © ELMOS Semiconductor AG, 2012. Reproduction, in part or whole, without the prior written consent of ELMOS Semiconductor AG, is prohibited. ELMOS Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products. ELMOS Semiconductor AG Data Sheet 48/48 QM-No.: 25DS0095E.00
