75
J4 Connector Pinout (Optional)
A
J4 Connector Pinout (Optional)
The VMICPCI-7755 utilitizes a high-density 110-pin, low inductance, and controlled
impedance connector. This connector meets the IEC-1076 international standard for
CompactPCI connectors. An additional external metal shield is required. The large
number of ground pins ensures adequate shielding and grounding for low ground bounce
and reliable operation in noisy environments. The key prevents misalignment of the board
when installing in the chassis. Figure A-4 below depicts the optional J4 connector and the
connector pinout.
Figure A-4
J4 Connector (optional) and Pinout
NOTE:
Only the “raw” parallel port signals are provided here. These signals are
unterminated and will need termination to function. A 4.7k Ohm pullup resister to
+5v, a 33 Ohm series resistor, and a 180pF bypass cap to ground are suggested for each
signal.
Pin No.
Row A
Row B
Row C
Row D
Row E
Row F
25
RSV*
P_SLCT
N/C
RSV
RSV
GND
24
RSV
P_PE
N/C
RSV
RSV
N/C
23
RSV
P_BSY_WT#
N/C
RSV
RSV
GND
22
RSV
P_ACK#
RSV
RSV
RSV
N/C
21
RSV
P_SLIN#
RSV
RSV
RSV
GND
20
RSV
P_INIT#
N/C
RSV
RSV
N/C
19
N/C
N/C
RSV]
RSV
RSV
GND
18
P_STB#
GPIO[24]
RSV
RSV
RSV
N/C
17
P_AFD#
GPIO[25]
RSV
RSV
RSV
GND
16
P_ERR#
GPIO[27]
RSV
RSV
RSV
N/C
15
N/C
GPIO[28]
RSV
N/C
N/C
GND
12 through 14 are lost to the keying area
11
P_D[7]
N/C]
RSV
N/C
N/C
GND
10
P_D[6]
N/C
RSV
N/C
N/C
N/C
9
P_D[5]
RSV
RSV
N/C
N/C
GND
8
P_D[4]
RSV
RSV
N/C
RSV
N/C
7
P_D[3]
RSV
RSV
N/C
RSV
GND
6
P_D[2]
N/C
RSV
N/C
RSV
N/C
5
P_D[1]
RSV
RSV
N/C
N/C
GND
4
P_D[0]
RSV
RSV
RSV
RSV
N/C
3
N/C
RSV
RSV
RSV
RSV
GND
2
RSV
RSV
RSV
RSV
RSV
N/C
1
RSV
RSV
RSV
RSV
RSV
GND
*RSV = Reserved. Do not connect. Damage to the unit may occur if connected.
Содержание VMICPCI-7755
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