CARD-PCI/GX Hardware Manual
EPSON
Rev.A
30
20-pin connector
Signal name
(4 pins in total)
I/O
Function description
IRQ[3,4,7,15]
I
or
O
Interrupt request
Active high
Signals which request SCE8720C for interruption.
When being used by the serial interface inside
SCE8720C, IRQ4 and 3 become outputs. When being not
used, they become inputs and can be used on the ISA bus.
When being used by the parallel interface inside
SCE8720C, IRQ7 becomes output. When being not used,
they become inputs and can be used on the ISA bus.
3.3.3 LCD
With SCE8720C, only TFT panel can be used as LCD panel. STN panel cannot be used.
LCD data is 18-bit (FPDATA17~0).
Signal name
(25 pins in total)
I/O
Function description
FPHSYNC,
FPVSYNC
O
Horizontal and vertical synchronous signals for flat panel
(TFT).
FPDATA[17:0]
O
Dot data for flat panel (TFT).
6 bits for R, G and B each.
FPDISPEN
O
Display enable
FPDOTCLK
O
Dot clock
FPDOTE
O
Extended signal for flat panel. Even clock for LVDS is
output.
FPVEEON
O
Enable signal for back light power supply.
FPVDDON
O
Enable signal for V
DD
power supply (logic system).
