Delta Tau PMAC2A-PC/104 Manual descargar pdf (Pagina 70)

PMAC2A-PC104 Hardware Manual

64 Acc-2P Connector Pinouts

J2 (JTHW): Multiplexer Port

Connector

(26-Pin Connector)

Front View

Pin# Symbol Function Description Notes

1 GND Common PMAC Common

2 GND Common PMAC Common

3 DAT0 Input Data-0 Input Data input from multiplexed accessory

4 SEL0 Output Select-0 Output Multiplexer select output

5 DAT1 Input Data -1 Input Data input from multiplexed accessory

6 SEL1 Output Select -1 Output Multiplexer select output

7 DAT2 Input Data -2 Input Data input from multiplexed accessory

8 SEL2 Output Select -2 Output Multiplexer select output

9 DAT3 Input Data -3 Input Data input from multiplexed accessory

10 SEL3 Output Select -3 Output Multiplexer select output

11 DAT4 Input Data -4 Input Data input from multiplexed accessory

12 SEL4 Output Select -4 Output Multiplexer select output

13 DAT5 Input Data -5 Input Data input from multiplexed accessory

14 SEL5 Output Select -5 Output Multiplexer select output

15 DAT6 Input Data -6 Input Data input from multiplexed accessory

16 SEL6 Output Select -6 Output Multiplexer select output

17 DAT7 Input Data -7 Input Data input from multiplexed accessory

18 SEL7 Output Select -7 Output Multiplexer select output

19 N.C. N.C. No Connection

20 GND Common PMAC Common

21 N.C. Output Buffer Request Low is "BUFFER REQ."

22 GND Common PMAC Common

23 N.C. Output In Position Low is "IN POSITION"

24 GND Common PMAC Common

25 +5V Output +5VDC Supply Power supply out

26 N.C. Input PMAC Reset Low is "RESET"

The JTHW multiplexer port provides 8 inputs and 8 outputs at TTL levels. While these I/O can be used in

unmultiplexed form for 16 discrete I/O points, most users will utilize PMAC software and accessories to use this

port in multiplexed form to greatly multiply the number of I/O that can be accessed on this port. In multiplexed

form, some of the SELn outputs are used to select which of the multiplexed I/O are to be accessed.

The direction of the input and output lines on this connector are set by jumpers E7 and E8. If E7 is removed or E8 is

installed then the multiplexing feature if the JTHW port cannot be used.

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Delta Tau PMAC2A-PC/104 Manual Pagina 70