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CARD-PCI/GX Hardware Manual
3. Interface specifications
3. Interface specifications
3. Interface specifications
3. Interface specifications
3.1 Pin configuration
Pin configurations for the 20-pin connector (mainly FDD signal) and 280-pin connector of
SCE8720C are shown in the figure.
In the figure, 280-pin connector is viewed from the rear side. Connector pin configurations
on the main board, on which SCE8720C is installed, are shown in the figure. (Note that
the 1 pin mark on the connector is different.)
Since the 20-pin connector is connected using the flexible flat cable (FFC), pin configurations on
the receiving side board vary depending on the connector's installation method.
1 140
141 280
2 139
142 279
69
72
209 212
70
71
210 211
1 ・ ・ ・ ・ ・
20-pin
connector
(Rear side)
Flexible flat cable
* 280-pin connector
Most of the signals and powers of SCE8720C are connected via this connector. It
consists of 2 140-pin connectors.
* 20-pin connector
Connector for the flexible flat cable.
Signals for FDD and ISA bus interrupt signals are connected to this connector. When
not using such signals, this connector is unconnected.
18
SCE8720C
280-pin connector
(Rear side)
20
Figure 3.1 Connector pin configuration
EPSON
1 140
141 280
2 139
142 279
69
72
209 212
70
71
210 211
Receiver side board
Parts side
Rev.A
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