Rev. 3.0, 03/01, page 245 of 390
Table 16.1
Pin Function of Keyboard Controller Interface Module
Name
I/O
Pin Function
KBCS#
O
Keyboard Controller Chip Select
XIOW#
O
Keyboard Controller Write Enable
XIOR#
O
Keyboard Controller Read Enable
KBIRQ0
I
Keyboard Controller interrupt 0
KBIRQ1
I
Keyboard Controller interrupt 1
KBRESUME#
I
Keyboard Controller Resume
KBWAKEUP#
O
Keyboard Controller wakes up the STANDBY system via signal
KBWAKEUP#.
16.2
Register Description
Register or Buffer
Function
Access Size
Address
CR
Control Register
8 bits
H'1000D800
SR
Status Register
8 bits
H'1000D802
H8C1R
H8 Control 1 Register
8 bits
H'1000D000
H8C2R
H8 Control 2 Register
8 bits
H'1000D004
16.2.1
Control Register (CR)
CR, a 16-bit read/write register, is used to control keyboard controller interface. All bits in this
register are initialized to 0 at reset. CR is not initialized in STANDBY mode.
Bit
7
6
5
4
3
2
1
0
Bit Name
reserved reserved
KCRTTS1 KCRTTS0 IRQ1TTS1 IRQ1TTS0 IRQ0TTS1 IRQ0TTS0
Initial Value
-
-
0
0
0
0
0
0
R/W
-
-
R/W
R/W
R/W
R/W
R/W
R/W
Bit
Description
Default
7 - 6
Reserved
-
5
KCRESUME Trigger Type Select 1 (KCRTTS1):
1: If edge trigger is selected, falling edge trigger is selected.
If level trigger is selected, low level trigger is selected.
0: If edge trigger is selected, rising edge trigger is selected.
If level trigger is selected, high level trigger is selected.
0
Summary of Contents for HD64465
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