PMAC2-Lite Hardware Reference Manual
J2 (JTHW) Multiplexer Port Connector
J2 JTHW
(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 MUX port
accessories
4
SEL0
Output
Select-0 output
Address/data output for MUX
port accessories
5
DAT1
Input
Data -1 input
Data input from MUX port
accessories
6
SEL1
Output
Select -1 output
Address/data output for MUX
port accessories
7
DAT2
Input
Data -2 input
Data input from MUX port
accessories
8
SEL2
Output
Select -2 output
Address/data output for MUX
port accessories
9
DAT3
Input
Data -3 input
Data input from MUX port
accessories
10
SEL3
Output
Select -3 output
Address/data output for MUX
port accessories
11
DAT4
Input
Data -4 input
Data input from MUX port
accessories
12
SEL4
Output
Select -4 output
Address/data output for MUX
port accessories
13
DAT5
Input
Data -5 input
Data input from MUX port
accessories
14
SEL5
Output
Select -5 output
Address/data output for MUX
port accessories
15
DAT6
Input
Data -6 input
Data input from MUX port
accessories
16
SEL6
Output
Select -6 output
Address/data output for MUX
port accessories
17
DAT7
Input
Data -7 input
Data input from MUX port
accessories
18
SEL7
Output
Select -7 output
Address/data output for MUX
port accessories
19
N.C.
N.C.
No connection
20 GND Common
PMAC
common
21
BRLD/
Output
Buffer request
Low is buffer request
22
GND
Common
PMAC common
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 connector provides eight inputs and eight outputs at TTL levels; PMAC software supports the
use of multiplexed I/O on this port.
16
PMAC2-Lite Connector Pinouts
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