KBD43W13 Ver la hoja de datos (PDF) - SMSC -> Microchip

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KBD43W13

Keyboard and PS/2 Mouse Controller

SMSC -> Microchip 

Output Port Definition

BIT

FUNCTION

0

System Reset

1

Gate A20

2

Mouse Data Output

3

Mouse Clock Output

4

Keyboard Output Buffer Full Interrupt

5

Mouse Output Buffer Full Interrupt

6

Keyboard Clock Output

7

Keyboard Data Output

Test-input Port Definition

BIT

0

Keyboard Clock Input

1

Mouse Clock Input

FUNCTION

Commands (I/O Address HEX 64) (AT Mode)

COMMAND

FUNCTION

20

Read Command Byte of Keyboard Controller

60

Write Command Byte of Keyboard Controller

BIT

BIT DEFINITION

7 Reserved

6 IBM PC Compatible Mode

5 IBM PC Mode

4 Disable Keyboard

3 Inhibit Override

2 System Flag

1 Reserved

0 Enable Output Buffer Full Interrupt

AA

Self-test

AB

Interface Test

BIT

BIT DEFINITION

00 No Error Detected

01 K/B Clock Line is Stuck Low

02 K/B Clock Line is Stuck High

03 K/B Data Line is Stuck Low

04 K/B Data Line is Stuck High

AD

Disable Keyboard Feature

11

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