Panasonic JS-170FR Series, Service Manual

Page: 34 / 161

2-4
Pin No. Signal name IN/OUT Functions
U 14
W 06
Y 10
V 05
T 15
V 16
W 17
DACK0#
DACK1#
DACK2#
DACK3#
DACK5#
DACK6#
DACK7# OUT ACK signal to DRQ. Active : Low
W 15
U 06
V 02
U 05
Y 16
U 16
U 17
DRQ0
DRQ1
DRQ2
DRQ3
DRQ5
DRQ6
DRQ7 IN DMA transfer request signal. Active : High
V 20 EXTSMI# IN/OUT External system management interrupt.
E 06 FRAME# IN/OUT PCI bus The signal to indicate that the bus cycle is currently executed. Active : Low
K 19 FERR# IN Floating decimal point error signal. Active : Low
N 01
P 02
P 04
GNTA#
GNTB#
GNTC# OUT PCI bus DMA enable signal. Active : Low
P 19
L 02
J 03
L 05
K 03
K 04
H 01
H 04
H 05
G 03
GPI1
GPI13
GPI14
GPI15
GPI16
GPI17
GPI18
GPI19
GPI20
GPI21 IN Used as a general-purpose input port.
G 04
T 19
G 05
F 02
F 03
F 04
GP00
GP08
GP027
GP028
GP029/IRQ9_0
GP030 OUT Used as a general-purpose input port.
A 03 IDSEL IN PCI The signal used to specify the target device.
L 19 INTR OUT Interrupt request signal. IRQ0-IRQ15 (
→
CPU) Active : High
L 17 IGNNE# OUT Output to disregard the floating decimal point error. (
→
CPU)
L 18 INIT OUT The initialize request signal to the CPU. (
→
CPU) Active : High
V 12 IOCS16# IN ISA Used to specify the data bus width of I/O. Low
→
16-bit, High
→
8-bit.
Y 01 IOCHK#/GPI0 IN ISA The signal to indicate that a correction impossible error has occurred. (
→
NMI)
Active : Low
T 03 IOCHRDY IN ISA Used when the bus cycle is extended. (Wait signal) Active : Low
T 04 IOW# IN/OUT ISA Write signal to the I/O device. Active : Low
Y 05 IOR# IN/OUT ISA Read signal to the I/O device. Active : Low
B 05 IRDY# IN/OUT PCI The signal to indicate that the initiator is enabled to transfer data.