Xycom XVME-400, Manual

Page: 52 / 83

XVME-400/40l/490/491 Manual
October, 1989
BACKPLANE CONNECTOR P2
The
XVME-490
and XVME-491 have the rear-edge connector P2, which is a 96-pin bus
connector consisting of three rows of 32 pins each. (Row A is physically closest to the
board.) Table A-3 identifies the RS-232C P2 signals for the XVME-490, while Table A-4
shows the RS-485/422A
signals for the XVME-491.
Table A-3. P2 Signal Identification for XVME-490
Pin #
1
2
3
4
5
6
7
8
9
1 0
11
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
20
2 1
22
23
24
25
26
27
28
29
30
3 1
32
Row A Signal Row B Signal Row C Signal
T X D O
v c c GND
RXDO
GND GND
RTSO N C GND
RXCO Ch. 0
N C
GND
CTSO N C GND
DTRO NC GND
DCDO N C GND
TXCO N C GND
TXDl N C GND
RXDl
N C GND
RTSl N C GND
RXCl Ch.1 GND GND
CTSI v c c GND
DTR 1 N C GND
DCDl
N C GND
TXCl
N C GND
TXD2
N C GND
RXD2 N C GND
RTS2
N C GND
RXC2 Ch. 2 N C GND
C T S 2 N C GND
DTR2 GND
GND
DCD2 . N C GND
TXC2
N C GND
TXD3
N C GND
RXD3
N C GND
RTS3 N C GND
RXC3 Ch. 3 N C GND
CTS3 NC GND
DTR3 N C GND
DCD3
GND GND
TXC3
v c c
GND
NOTE
All P2
signal names are in the form “XXXN” where “N” is the serial channel
number and “XXX” is the signal name. Signals with the same “XXX” function
identically with respect to the particular channel.
A-7