w83977ctf Winbond Electronics Corp America, w83977ctf Datasheet - Page 27

• Manufacturer Part Number: w83977ctf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

1.7 KBC Interface
1.8 POWER PINS
1.9 ACPI Interface
KDATA
MDATA
KCLK
MCLK
GA20
GP11
(IRQIN2)
KBRST
GP12
(WDTO)
KBLOCK
GP13
VCC
VSB
GND
VBAT
XTAL1
XTAL2
SYMBOL
SYMBOL
SYMBOL
59
60
67
68
56
57
58
20, 55, 85,
115
71
25, 62, 90,
120
PIN
PIN
64
63
61
PIN
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
IN
IN
O
I/O
I/O
NA
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
-18 -
FUNCTION
FUNCTION
FUNCTION
Publication Release Date: March 1999
W83977EF/ CTF
PRELIMINARY
Revision A1