W83977A Winbond Electronics Corp America, W83977A Datasheet - Page 14

• Manufacturer Part Number: W83977A
• Description: Winbond I/O
• Manufacturer: Winbond Electronics Corp America

1.1 Host Interface, continued
GP16
(WDTO)
P15
DRQ0
GP17
(PLEDO)
P14
DRQ1
DRQ2
DRQ3
TC
IRQ1
IRQ3
IRQ4
IRQ5
IRQ6
IRQ7
IRQ8
IRQ9
IRQ10
IRQ11
IRQ12
DACK0
DACK1
DACK2
DACK3
SCI
SYMBOL
PIN
119
121
122
123
124
125
126
127
128
100
101
102
99
98
97
96
95
94
93
92
OUT
OUT
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
IN
I/O
tsu
12t
12t
12t
12t
ts
ts
ts
ts
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
DMA Channel 0 Acknowledge signal. (CR2C bit 5_4 = 00, default)
General purpose I/O port 1bit 6. (CR2C bit 5_4 = 01)
Alternate function from GP16: Watch dog timer output
KBC P15 I/O port. (CR2C bit 5_4 = 10)
DMA Channel 0 request signal. (CR2C bit 7_6 = 00, default)
General purpose I/O port 1bit 7. (CR2C bit 7_6 = 01)
Alternate Function from GP17: Power LED output.
KBC P14 I/O port (CR2C bit 7_6 = 10)
System Control Interrupt (CR2C bit 7_6 = 11)
DMA Channel 1 Acknowledge signal
DMA Channel 1 request signal
DMA Channel 2 Acknowledge signal
DMA Channel 2 request signal
DMA Channel 3 Acknowledge signal
DMA Channel 3 request signal
Terminal Count. When active, this pin indicates termination of a
DMA transfer.
Interrupt request 1
Interrupt request 3
Interrupt request 4
Interrupt request 5
Interrupt request 6
Interrupt request 7
Interrupt request 8
Interrupt request 9
Interrupt request 10
Interrupt request 11
Interrupt request 12
-6-
FUNCTION
Publication Release Date: April 1998
W83977TF
PRELIMINARY
Revision 0.62