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PDF W83C43 Data sheet ( Hoja de datos )
| Número de pieza | W83C43 | |
| Descripción | KEYBOARD CONTROLLER | |
| Fabricantes | Winbond | |
| Logotipo |  |
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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
1 page  
BLOCK DIAGRAM
T0
T1
x1
x2
WR
RD
CS
A2
RESET
RECEIVE
CONTROL
HARDWIRE
CONTROL &
SELECT
LOGIC
SCAN
CODE
ROM
TRANSMIT
CONTRROL
TRANSMIT
REGISTER
STATUS
REGISTER
W83C43
D0~D7
DATA
BUFFER
REGISTER
R64 STATUS
BUFFER
REGISTER
W60
W64
INPUT
BUFFER
REGISTER
R60 OUTPUT
BUFFER
REGISTER
INPUT &
OUTPUT
PORT
INTERFACE
OUTPUT
PORT
INTERFACE
P10
P11
P12
P13
P14 (RAM)
P15 (JUMP)
P16 (DISP)
P17 (KINH)
P20 (RC)
P21 (GA20)
P22 (NC/MDAT)
P23 (NC/MCLK)
P24 (KINT)
P25 (IEMP/MINT)
P26 (KCLK)
P27 (KDAT)
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Ambient Operating Temperature
Storage Temperature
Supply Voltage to Ground Potential
Applied Input/Output Voltage
Power Dissipation
RATING
-0 to + 85
-65 to + 150
-0.3 to + 7.0
-0.3 to + 7.0
50
UNIT
°C
°C
V
V
mW
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the
device.
Publication Release Date: January 1996
- 5 - Revision A2
5 Page 
Commands (I/O Address HEX 64) (AT Mode), continued
COMMAND
C0 Read Input Port
D0 Read Output Port
D1 Write Output Port
E0 Read Test Inputs
F0-FF
Pulse Output Port
FUNCTION
Commands (I/O Address HEX 64) (PS/2 Mode)
COMMAND
20
60
FUNCTION
Read Command Byte of Keyboard Controller
Write Command Byte of Keyboard Controller
BIT BIT DEFINITION
7 Reserved
6 IBM Keyboard Translate Mode
5 Disable Auxiliary Device
4 Disable Keyboard
3 Reserve
2 System Flag
1 Enable Auxiliary Interrupt
0 Enable Keyboard Interrupt
A7 Disable Auxiliary Device Interface
A8 Enable Auxiliary Device Interface
A9 Interface Test
BIT BIT DEFINITION
00 No Error Detected
01 Auxiliary Device "Clock" line is stuck low
02 Auxiliary Device "Clock" line is stuck high
03 Auxiliary Device "Data" line is stuck low
04 Auxiliary Device "Data" line is stuck low
AA Self-test
W83C43
- 11 -
Publication Release Date: January 1996
Revision A2
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet W83C43.PDF ] | |
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