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3.3.12 Power supply
Signal name
(57 pins in total)
GND
V
CCCORE
V
CC3V
V
CC5V
V
CCSTB
V
CCBAK
3.3.13 FDD
SCE8720C supports 1 unit of 3.5" floppy disk drive. 2 modes, 720KB and 1.44MB, are
available.
Signal name
I/O
DSKCHG#
WP#
INDEX#
TRK0#
RDATA#
DENSEL
WGATE#
HDSEL#
STEP#
DIR#
WDATA#
DR0#
MTR0#
Rev.A
Ground.
Power to the regulator for CPU core power supply.
Power of 5V should be supplied. This is not connected to
V
inside the card.
CC5V
3.3V power supply.
5V power supply, for ISA bus.
5V standby power supply signal supplied to the power
supply control circuit inside the card. Power of 5V is always
supplied when AC line of the power supply is connected.
power supply for RTC backup.
I
Disk Change
I
Write Protect
I
Index
I
Track 0
I
Read Data
O
Density Select
O
Write Gate
O
Head Select
O
Step
O
Direction
O
Write Data
O
Drive Select 0
O
Motor Select 0
EPSON
CARD-PCI/GX Hardware Manual
Function description
Function description
37
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