W83C43 PDF даташит
Спецификация W83C43 изготовлена «Winbond» и имеет функцию, называемую «KEYBOARD CONTROLLER». |
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Детали детали
Номер произв | W83C43 |
Описание | KEYBOARD CONTROLLER |
Производители | Winbond |
логотип |
21 Pages
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W83C43
KEYBOARD CONTROLLER
GENERAL DESCRIPTION
The W83C43 is a keyboard controller designed to provide the functions needed to interface a CPU to
a keyboard or to a PS/2 mouse. The W83C43 can be used with IBM®-compatible personal computers
or PS/2-based systems. The controller receives serial data from the keyboard or PS/2 mouse, checks
the parity of the data, and presents the data to the system as a byte of data in its output buffer. The
controller will interrupt the system when data are placed in its output buffer. The keyboard and PS/2
mouse are required to acknowledge all data transmissions. No transmission should be sent to the
keyboard or PS/2 mouse until acknowledge is received for the previous byte sent.
This fast keyboard controller can improve the performance of IBM PC/AT® 386™ DX/SX and 486™
DX/SX machines and their compatibles. Hardwire methodology is used in this controller instead of
software implementation, as in the traditional 8042 keyboard BIOS. With full hardware
implementation, this enables the keyboard controller to respond instantly to all commands sent from
the keyboard and PS/2 mouse to the CPU BIOS.
The keyboard controller enables popular programs such as AutoCAD®, Microsoft® Windows™ 3.1,
NOVELL®, and other programs to run much faster.
FEATURES
• Supports IBM PC/AT 386 DX/SX and 486 DX/SX system designs
• Full hardwire design based on advanced VLSI CMOS technology
• Supports PS/2 Mouse
• 6 MHz to 12 MHz operating frequency
• Supports AT mode and PS/2 mode for different hardware configurations
• Automatically detects PS/2 mode or AT mode
• Much faster than traditional keyboard controller
• Packaged in 40-pin DIP or 44-pin PLCC
Publication Release Date: January 1996
- 1 - Revision A2
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W83C43
PIN CONFIGURATIONS
40-pin DIP
T0
X1
X2
RESET
Vcc
CS
GND
RD
A2
WR
NC
D0
D1
D2
D3
D4
D5
D6
D7
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40 Vcc
39 T1
38 P27 (KDAT)
37 P26 (KCLK)
36 P25 (IEMP/MINT)
35 P24 (KINT)
34 P17 (KINH)
33 P16 (DISP)
32 P15 (JUMP)
31 P14 (RAM)
30 P13
29 P12
28 P11
27 P10
26 NC
25 Vcc
24 P23 (NC/MCLK)
23 P22 (NC/MDAT)
22 P21 (GA20)
21 P20 (RC)
44-pin PLCC
CS
GND
RD
A2
WR
NC
NC
D0
D1
D2
D3
/
R
E
VS
V PPP
c EXXT Nc T2 2 2
c T2 10 Cc 1 7 6 5
6 5 4 3 2 1 44 43 42 41 40
7 39
8 38
9 37
10 36
11 35
12 34
13 33
14 32
15 31
16 30
17 29
18 19 20 21 22 23 24 25 26 27 28
D D D D GN P P P P V
4 5 6 7 NC 2 2 2 2 c
D 01 2 3 c
P24
P17
P16
P15
P14
NC
P13
P12
P11
P10
NC
-2-
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W83C43
PIN DESCRIPTION
PIN NO.
I/O NAME
FUNCTION
(40-pin
DIP)
(44-pin
PLCC)
AT MODE
PS/2 MODE
1
2 I T0 K/B Clock Input
K/B Clock Input
2
3 I X1 Crystal Clock I/P
Crystal Clock I/P
3
4 I X2 Crystal Clock I/P
Crystal Clock I/P
4 5 I RESET Chip Reset
Chip Reset
5
6
- VCC Optional +5V Power
Optional + 5V Power
Supply
Supply
6 7 I CS Chip Select
Chip Select
7 8 - GND Optional Ground Power Optional Ground Power
8 9 I RD I/O Read
I/O Read
9 10 I A2 Connect to Address A2 Connect to Address A2
10 11 I WR I/O Write
I/O Write
11, 26
1, 12, 13,
23, 29, 34
-
NC Reserved
Reserved
12, 13, 14, 14, 15, 16, I/O D0−D7 Data Bus D0−D7
15, 16, 17, 17, 18, 19,
18, 19
20, 21
Data Bus D0−D7
20 22 - GND Ground Power Supply Ground Power Supply
21 24 O P20 Bit 0 of Port2
Bit 0 of Port2
( RC : System Reset)
( RC : System Reset)
22 25 O P21 Bit 1 of Port2
Bit 1 of Port2
( GA20 : GATE A20)
( GA20 : GATE A20)
23 26 I/O P22 Bit 2 of Port2
Bit 2 of Port2
(NC: User-defined I/O)
(MDAT: Mouse Data
Output)
24 27 I/O P23 Bit 3 of Port2
Bit 3 of Port2
(NC: User-defined I/O)
(MCLK: Mouse Clock
Output)
25
28
- VCC Optional +5V Power
Optional + 5V Power
Supply
Supply
Publication Release Date: January 1996
- 3 - Revision A2
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Номер в каталоге | Описание | Производители |
W83C42 | KEYBOARD CONTROLLER | Winbond |
W83C43 | KEYBOARD CONTROLLER | Winbond |
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