w83977eg Winbond Electronics Corp America, w83977eg Datasheet - Page 12

• Manufacturer Part Number: w83977eg
• Description: Winbond Isa I/o W83977ef W83977eg
• Manufacturer: Winbond Electronics Corp America

Host Interface , continted.
DRQ0
GP17
(PLEDO)
P14
SCI#
DACK1#
DRQ1
DACK2#
DRQ2
DACK3#
DRQ3
TC
IRQ1
IRQ3
IRQ4
IRQ5
IRQ6
IRQ7
IRQ9
IRQ10
IRQ11
IRQ12
IRQ14
GP14
(GPACS1#)
(P17)
PLEDO
IRQ15
GP15
(GPACS2#)
(P12)
WDT
CLKIN
SYMBOL
121
122
123
124
125
126
127
128
PIN
100
101
102
103
104
99
98
97
96
95
94
92
1
OUT12t
OUT12t
OUT12t
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
I/O12t
I/O
I/O
I/O
IN
IN
IN
IN
I/O
IN
12t
12t
12t
ts
ts
ts
ts
t
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
12t
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 9
Interrupt request 10
Interrupt request 11
Interrupt request 12
Interrupt request 14. (CR2C bit 1_0 = 00, default)
General purpose I/O port 1 bit 4. (CR2C bit 1_0 = 01)
Alternate Function 1 from GP14: General purpose address
decode output.
Alternate Function 2 from GP14: KBC P17 I/O port.
Power LED output. (CR2C bit 1_0 = 10)
Interrupt request 15.(CR2C bit 3_2 = 00, default)
General purpose I/O port 1 bit 5. (CR2C bit 3_2 = 01)
Alternate Function 1 from GP15: General purpose address
write enable output.
Alternate Function 2 from GP15: KBC P12 I/O port.
Watch-Dog timer output. (CR2C bit 3_2 = 10)
24 or 48 MHz clock input, selectable through bit 5 of CR24.
W83977EF-AW/W83977EG-AW
-10-
FUNCTION