Delta Tau PMAC2A-PC/104 manual J2 Jthw Multiplexer Port Connector, Pin# Symbol

					PMAC2A PC104 Hardware Reference Manual
	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 Request
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 eight inputs and eight 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.

54 Acc-1P Connector Pinouts