w83977eg Winbond Electronics Corp America, w83977eg Datasheet - Page 20

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

4.7
4.8
4.9
KDATA
MDATA
KCLK
MCLK
GA20
GP11
(IRQIN2)
KBRST
GP12
(WDTO)
KBLOCK
GP13
SYMBOL
SYMBOL
SYMBOL
XTAL1
XTAL2
VBAT
GND
VCC
VSB
KBC Interface
POWER PINS
ACPI Interface
59
60
67
68
56
57
58
PIN
PIN
63
61
64
20, 55, 85,
25, 62, 90,
115
120
PIN
71
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
IN
IN
NA
O
I/O
I/O
16u
16u
16u
16u
8t
12t
12t
12t
12t
16t
ts
C
+5V power supply for the digital circuitry
+5V stand-by power supply for the digital circuitry
Ground
Keyboard Data
PS2 Mouse Data
Keyboard Clock
PS2 Mouse Clock
KBC GATE A20 (P21) Output. (CR2A bit 6 = 0, default)
General purpose I/O port 1 bit 1. (CR2A bit 6 = 1)
Alternate Function from GP11: Interrupt channel input.
W83C45 Keyboard Reset (P20) Output. (CR2A bit 7 = 0, default)
General purpose I/O port 1 bit 2. (CR2A bit 7 = 1)
Alternate Function 1 from GP12 : Watchdog timer output.
W83C45 KINH (P17) Input. (CR2B bit 0 = 0, default)
General purpose I/O port 1 bit 3. (CR2B bit 0 = 1)
battery voltage input
32.768Khz Clock Input
32.768Khz Clock Output
W83977EF-AW/W83977EG-AW
-18-
FUNCTION
FUNCTION
FUNCTION