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Two Photon Source
5 July 2006 A.S.
Port Mapping for RCM3200
Port
====
PA0-7
PB0
PB2
PB3
PB4
PB5
PB6
PB7
PC0
PC1
PC2
PC3
PC4
PC5
PC6-7
PD0
PD2-3
PD4-5
PD6-7
PE0
PE1
PE2
PE3
PE4
PE5
PE6
PE7
PF0-7
PG0-3
PG4
PG5
PG6
PG7
I/O
===
O
O
O
O
O
O
O
O
I
O
I
O
I
O
I
O
O
O
I
I/O
I/O
O
O
O
O
Function
=================================================
Reserved for ethernet
/ECL_CURRENT_CS, DAC, 12-bit, 0 to 140mA
/ECL_TEC_EN, low enables TEC
/ECL_PIEZO_CS, DAC, 12-bit, +63.3 to 0V
/ECL_NARROW_MODE, high enables the active cavity correction to reduce noise
/INJ_CURRENT_CS, DAC, 12-bit, 0 to 140mA
/INJ_TEC_EN, low enables TEC
SCAN_EN, high adds a 1mA load to all piezo supplies to increase -dV/dt for scanning
/SCAN_X_CS, DAC, 12-bit, X-axis output to 'scope, for scanning
SW1, front panel switch, bit 0
/SCAN_Y_CS, DAC, 12-bit, Y-axis output to 'scope, for scanning
SW1, front panel switch, bit 1
SCLK, serial clock for all DACS
SW1, front panel switch, bit 2
Reserved for programming port, J3
Reserved for ethernet
Reserved for ethernet
Reserved for ethernet, maybe, so do not use
Reserved for ethernet
Reserved for ethernet
/CONV, ADC, start conversion
Reserved (for ?)
BUSY, ADC, high during a conversion
/RD, ADC read enable
/WR, ADC write enable
/CS, ADC chip select
SW1, front panel switch, bit 3
Data bus, bits 0-7
Data bus, bits 8-11
SDATA, serial data for all DACs
/DN_HTR_EN, low enables the heater on the down conversion crystal
/CS_DOWN, DAC, 12-bit, +63.3 to 0V
/CS_UP, DAC, 12-bit, +63.3 to 0V
ADC Channels
ADC
===
0
1
2
3
All are 12-bit
Description
=================================
ECL photodiode
ECL TEC current (0 to 7.35A, limited to about 1.5A)
ECL temperature (+29.5° to +1.6°)
Injection laser TEC current (0 to 7.35A, limited to about 1.5A)
4
5
6
7
Injection laser temperature (+29.5° to +1.6°)
Up converter photodiode
Down converter photodiode
Front panel 10-turn pot
DAC Channels
DAC
===
0
1
2
3
4
5
6
Byte
===
0-15
16
17
17.0
17.1
17.2
17.3
17.4
17.5-7
18-19
20-21
22-23
24-25
26-27
28-29
30-31
All are 12-bit
Description
=================================
ECL laser current (0 to +80mA)
ECL piezo voltage (+63.3 to 0V)
Injection laser current (0 to +80mA)
Up converter piezo voltage (+63.3 to 0V)
Down converter piezo voltage (+63.3 to 0V)
X-axis (0 to +4.095V)
Y-axis (0 to +4.095V)
Status Byte 32 bytes, once a second
Description
=================================
ADC channels 0-7, two bytes per channels (4 MSB of MS byte are zeros)
unused
Status byte as follows (logic “1” indicates on):
ECL TEC status
Injection laser TEC status
Scan loads enabled status
Down converter heater status
ECL line narrowing status
unused, currently all zeros
ECL current DAC setting (for all DACs, 4 MSB of MS byte are zeros)
ECL piezo DAC setting
Injection laser current DAC setting
Up converter piezo DAC setting
Down converter piezo DAC setting
X-axis output DAC setting
Y-axis output DAC setting
Back Panel Connectors
Pin
===
1
2
3
4
5
ECL
=============
Laser Anode*
Laser Cathode*
TEC +
TEC Thermister
Injection Laser
=============
Laser Anode*
Laser Cathode*
TEC+
TECThermister
Up/Down Cavities
=============
Up Piezo+
Up PiezoDown Piezo+
Down PiezoDown thermister
6
Thermister
Thermister
7
Piezo+
8
Piezo9
* Add 22uF tantalum capacitor anode to cathode.
Down thermister
Down heater
Down heater