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19.3.1
Keyboard Control Register 1 (KBCR1)
KBCR1 controls data transmission and interrupt, selects parity, and detects transmit error.
Bit
Bit Name
7
KBTS
6
PS
5
KCIE
4
KTIE
3
Initial
Value
R/W
Description
0
R/W
Transmit Start
Selects start of data transmission or disables
transmission.
0: Data transmission is disabled
[Clearing conditions]
•
•
•
1: Starts data transmission
[Setting condition]
•
0
R/W
Transmit Parity Selection
Selects even or odd parity.
0: Selects odd parity
1: Selects even parity
0
R/W
First KCLK Falling Interrupt Enable
Selects whether an interrupt at the first falling edge of
KCLK is enabled or disabled.
0: Disables first KCLK falling interrupt
1: Enables first KCLK falling interrupt
0
R/W
Transmit Completion Interrupt Enable
Selects whether a transmit completion interrupt is
enabled or disabled.
0: Disables transmit completion interrupt
1: Enables transmit completion interrupt
0
Reserved
The initial value should not be changed.
Section 19 Keyboard Buffer Control Unit (PS2)
When 0 is written
When the KBTE is set to 1
When the KBIOE is cleared to 0
When 1 is written after reading the KBTS = 0
Rev. 1.00 May 09, 2008 Page 557 of 954
REJ09B0462-0100
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