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전자부품 반도체 검색엔진( 무료 PDF 다운로드 ) - 데이터시트뱅크

KBD43W13 데이터 시트보기 (PDF) - SMSC -> Microchip

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KBD43W13
SMSC
SMSC -> Microchip SMSC
KBD43W13 Datasheet PDF : 22 Pages
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Status Register (PS/2 Mode)
BIT
BIT FUNCTION
0
Output Buffer Full
1
Input Buffer Full
2
System Flag
3
Command/Data
4
Inhinit Switch
5
Auxiliary Device Output Buffer
6
General Purpose Time-out
7
Parity Error
DESCRIPTION
0: Output buffer empty
1: Output buffer full
0: Input buffer empty
1: Input buffer full
This bit may be set to 0 or 1 by writting to the
system flag bit in the command byte of the keyboard
controller. It is set to 0 after a power-on reset.
0: Data byte
1: Command byte
0: Keyboard is inhibited
1: Keyboard is not inhibited
0: Auxiliary device output buffer empty
1: Auxiliary device output buffer full
0: No time-out error
1: Time-out error
0: Odd parity
1: Even parity (error)
Input Port Definition
BIT
FUNCTION
0
Keyboard Data Input
1
Mouse Data Input
2
Undefined
3
Undefined
4
RAM on System Board
0: Disable second 256 KB of system board RAM
1: Enable second 256 KB of system board RAM
5
Manufacturing Jumper
0: Manufacturing jumper
1: Jumper not installed
6
Display Type Switch
0: Primary display attached to color/graphics
1: Primary display attached to monochrome
7
Keyboard Input Switch
0: Keyboard inhibited
1: Keyboard not inhibited
10

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