Reference Manual

PMAC PCI-Lite Hardware Reference Manual
54 Connector Pinouts
J31 (JUSB) Universal Serial Bus Port (Optional)
Pin # Symbol Function
1 VCC N.C.
2 D- Data-
3 D+ Data+
4 GND GND
5 Shell Shield
6 Shell Shield
JS1: A/D Port 1 Connector
JS1 (16-Pin Header)
Front View
Pin # Symbol Function Description Notes
1 DCLK Output D to A, A to D Clock DAC and ADC clock for chan 1,
2, 3, 4
2 BDATA1 Output D to A Data DAC data for chan 1, 2, 3, 4
3 ASEL0/ Output Chan Select Bit 0 Select for chan 1, 2, 3, 4
4 ASEL1/ Output Chan Select Bit 1 Select for chan 1, 2, 3, 4
5 CNVRT01 Output A to D Convert ADC convert sig. Chan 1, 2, 3, 4
6 ADCIN1 Input A to D Data ADC data for chan 1, 2, 3, 4
7 OUT1/ Output Amp Enable/Dir Amp enable/dir. for chan 1
8 OUT2/ Output Amp Enable/Dir Amp enable/dir. for chan 2
9 OUT3/ Output Amp Enable/Dir Amp enable/dir. for chan 3
10 OUT4/ Output Amp Enable/Dir Amp enable/dir. for chan 4
11 HF41 Input Amp Fault Amp fault input for chan 1
12 HF42 Input Amp Fault Amp fault input for chan 2
13 HF43 Input Amp Fault Amp fault input for chan 3
14 HF44 Input Amp Fault Amp fault input for chan 4
15 +5V Output +5v Supply Power supply out
16 GND Common PMAC Common
TB1 (JPWR) External Power Supply Connection
TB1 (JPWR)
Top View
Pin # Symbol Function Description Notes
1 GND Common Digital ground
2 +5V Input +5v supply Ref. to digital GND
3 +12V Input +12v to +15v supply Ref. to digital GND
4 -12V Input -12v to -15v supply Ref. to digital GND
This terminal block may be used as an alternative power supply connector if PMAC is not installed in a PCI-
bus. The +5V powers the digital electronics. The +12V and -12V (if jumpers E85, E87, and E88 are installed)
power the analog output stage. This defeats the optical isolation on PMAC.
To keep the optical isolation between the digital and analog circuits on PMAC, provide analog power (+/-12V
to +/-15V and AGND) through the JMACH connector instead of the bus connector or this terminal block.