W83626F Datasheet, PDF (9/34 Pages) Winbond – LPC-to-ISA Bridge

LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
ISA Interface Signals , continued
SYMBOL PIN
I/O
FUNCTION
IRQ4
97
INt Parallel Interrupt Requested Input 4.
IRQ5
96
INt Parallel Interrupt Requested Input 5.
IRQ6
94
INt Parallel Interrupt Requested Input 6.
IRQ7
93
INt Parallel Interrupt Requested Input 7.
IRQ9
78
INt Parallel Interrupt Requested Input 9.
IRQ10
10
INt Parallel Interrupt Requested Input 10.
IRQ11
9
INt Parallel Interrupt Requested Input 11.
IRQ12
8
INt Parallel Interrupt Requested Input 12.
IRQ14
6
INt Parallel Interrupt Requested Input 14.
IRQ15
7
INt Parallel Interrupt Requested Input 15.
DRQ0
3
INt DMA Request 0. The DREQ signal indicates that either a slave
DMA device is requesting DMA services, or an ISA bus master is
requesting use of the ISA bus.
DRQ1
90
INt DMA Request 1.
DRQ2
79
INt DMA Request 2.
DRQ3
88
INt DMA Request 3.
DRQ5
1
INt DMA Request 5.
DRQ6
127
INt DMA Request 6.
DRQ7
124
INt DMA Request 7.
DACK0#
4 OUT24 DMA Acknowledge 0. The DACK# signal indicates that either a
DMA channel or an ISA bus master has been granted the ISA bus.
DACK1#
DACK2#
89 OUT24 DMA Acknowledge 1.
99 OUT24 DMA Acknowledge 2.
DACK3#
87 OUT24 DMA Acknowledge 3.
DACK5#
2 OUT24 DMA Acknowledge 5.
DACK6#
HERFRA
127 I/OD24t DMA Acknowledge 6.
During power-on reset,this is pulled-hi internally(Select 4Eh) and
is defined as HEFRAS which provides the power-on value for
CR3 bit4 .A 4.7k ohm is recommended if intends to pull down
.(Select 2Eh)
DACK7#
126 OUT24 DMA Acknowledge 7.
TC
100 OUT24 Terminal Count. The W83628F asserts TC to DMA slaves as a
terminal count indicator.
Publication Release Date: Feb 2000
-7-
Revision 0.50