CARD-PCI/GX Hardware Manual
Rev.A
EPSON
23
Signal characteristics
Table 3.3 PCI signal characteristics
Signal name
280-pin connector
No. of
pins
Block
I/O
Vol-
tage
I
OL
I
OH
Reference
PU/PD
When not used
PU/PD
AD[31:0],CBE[3:0]#,PAR
37
PCI
I/O
3.3V
---
5mA
-2mA
---
---
FRAME#,IRDY#,TRDY#,
STOP# ,DEVSEL#,LOCK#
,PERR#
7
PCI
s/t/s 3.3V
20kPU
(3.3V)
5mA
-2mA
8.2kPU
(3.3V)
---
SERR#
1
PCI
I/OD 3.3V
20kPU
(3.3V)
5mA
---
8.2kPU
(3.3V)
---
RST#
1
PCI
O
3.3V
---
16mA
-16mA
---
---
REQ[1:0]#
2
PCI
I
3.3V
20kPU
(3.3V)
---
---
---
---
GNT[1:0]#
2
PCI
O
3.3V
---
5mA
-2mA
---
---
PCLK[2:0]
3
PCI
O
3.3V
---
8mA
-8mA
---
---
INTA#,INTB#,
INTC#,INTD#
4
PCI
I
3.3V
---
---
---
2.7kPU
(3.3V)
PU
Table 3.4 ISA signal characteristics
Signal name
280-pin connector
No. of
pins
Block
I/O
Vol-
tage
I
OL
I
OH
Reference
PU/PD
When not used
PU/PD
SD/SA[15:8]
8
ISA
I/O 3.3V,
5VT
20kPU
(3.3V)
8mA
-8mA
---
---
SD/SA[7:0]
8
ISA
I/O 3.3V,
5VT
20kPU
(3.3V)
8mA
-8mA
4.7kPU
(5V)
---
SA[19:16],SBHE#
5
ISA
O
3.3V
20kPU
(3.3V)
8mA
-8mA
---
---
MEMR#,MEMW#,IOR#,
IOW#
4
ISA
O
3.3V,
5VT
4. 7kPU
(5V)
8mA
-8mA
---
---
SALATCH
1
ISA
O
3.3V
---
4mA
-4mA
---
---
AEN
1
ISA
O
3.3V
---
8mA
-8mA
---
---
ROMCS#
1
ISA
O
3.3V
---
4mA
-4mA
---
---
MEMCS16#,IOCS16#
2
ISA
I
3.3V,
5VT
1kPU
(5V)
---
---
---
---
IOCHRDY
1
ISA
I
3.3V,
5VT
1kPU
(5V)
---
---
---
---
IRQ[5,9,10,11]
4
ISA
I
3.3V,
5VT
10kPU
(5V)
---
---
---
---
pull-up/
down
pull-up/
down
