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Turbo PMAC PCI Lite
42
Connector Pinouts
J3 JTHW (26-Pin Connector) Continued
Front View
Pin #
Symbol
Function
Description
Notes
23
IPLD/
Output
In position
Low is In Position
24
GND
Common
PMAC common
25
+5V
Output
+5Vdc supply
Power supply out
26
INIT/
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
un-multiplexed 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.
See also:
I/O and Memory Map Y:$78801
Suggested M-variables M40 - M58
M-variable formats TWB, TWD, TWR, TWS
Acc-8D Option 7, Acc-8D Option 9, Acc-18, Acc-34x, NC Control Panel
J4: Serial Port Connector
J4 JRS422 (26-Pin Connector)
Front View
Pin #
Symbol
Function
Description
Notes
1
CHASSI
Common
PMAC common
2
S+5V
Output
+5Vdc supply
Deactivated by E8
3
RD-
Input
Receive data
Diff. I/O low true **
4
RD+
Input
Receive data
Diff. I/O high true *
5
SD-
Output
Send data
Diff. I/O low true **
6
SD+
Output
Send data
Diff. I/O high true *
7
CS+
Input
Clear to send
Diff. I/O high true **
8
CS-
Input
Clear to send
Diff. I/O low true *
9
RS+
Output
Req. to send
Diff. I/O high true **
10
RS-
Output
Req. to send
Diff. I/O low true *
11
DTR
Bidirect
Data term read
Tied to DSR
12
INIT/
Input
PMAC reset
Low is Reset
13
GND
Common
PMAC common
**
14
DSR
Bidirect
Data set ready
Tied to DTR
15
SDIO-
Bidirect
Special data
Diff. I/O low true
16
SDIO+
Bidirect
Special data
Diff. I/O high true
17
SCIO-
Bidirect
Special ctrl.
Diff. I/O low true
18
SCIO+
Bidirect
Special ctrl.
Diff. I/O high true
19
SCK-
Bidirect
Special clock
Diff. I/O low true
20
SCK+
Bidirect
Special clock
Diff. I/O high true
21
SERVO-
Bidirect
Servo clock
Diff. I/O low true ***
22
SERVO+
Bidirect
Servo clock
Diff. I/O high true ***
23
PHASE-
Bidirect
Phase clock
Diff. I/O low true ***
24
PHASE+
Bidirect
Phase clock
Diff. I/O high true ***
25
GND
Common
PMAC common
26
+5V
Output
+5Vdc supply
Power supply out
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