w83877atd Winbond Electronics Corp America, w83877atd Datasheet - Page 10

• Manufacturer Part Number: w83877atd
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

1.1 Host Interface, continued
DRQ_C
IRQIN
DRQ_D
IRSL2
IRRXH/IRSL0
PNF
IRRXH/IRSL0
IRSL1
TC
GIO1
GIO0
IRQ_C
IRQ_D
IRQ_E
IRQ_F
IRQ_G
DRQ_D
IRSL2
PCICLK
DACK_ C
DACK_D
IRQ_ A
IRQ_ B
SCI
SYMBOL
PIN
18
93
97
96
92
44
37
23
99
4
3
1
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
I/O
I/O
I/O
I/O
IN
IN
IN
IN
I/O
IN
IN
12ts
12ts
12t
12t
ts
ts
ts
ts
ts
t
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
DMA request signal C.
DMA acknowledge signal C.
Interrupt request input.
DMA request signal D.
IR module mode selection 2.
When input, acts as a function of high speed IR receiving
terminal. When output selected, acts as a IR module mode
selection 0.
Detects printer is active, and not external FDC. When this pin
PNF is detected to 1 signal, the device is switched to parallel
printer. When this pin PNF is detected to 0 signal, the device is
switched to external FDC. The pin is configured in
(ENPNF).
When input pin, high speed IR received terminal. When output
pin, IR module mode select 0. Input or output are definied in
high speed IR register.
DMA acknowledge signal for channel D.
IR module mode select 1.
Terminal Count. When active, this pin indicates termination of
a DMA transfer.
When CR16 Bit 5 (GOIQSEL) = 0: Interrupt request signal A.
ACPI interrupt signal, selected by PnP IRQ configure register.
When CR16 Bit 4 (GOIQSEL) = 1: General Purpose I/O port 1.
When CR16 Bit 4 (GOIQSEL) = 0: Interrupt request signal B.
When CR16 Bit 4 (GOIQSEL) = 1: General Purpose I/O port 0.
Interrupt request signal C.
Interrupt request signal D.
Interrupt request signal E.
Interrupt request signal F.
Interrupt request signal G.
DMA request signal channel D.
IR module mode select 2.
PCI clock input when the serial IRQ function is selected.
- 6 -
FUNCTION
Publication Release Date: April 1998
W83877ATF
CR16.bit7
Version 0.51