Rev. 3.0, 03/01, page 246 of 390
Control Register (CR) [cont’d]
Bit
Description
Default
4
KCRESUME Trigger Type Select 0 (KCRTTS0):
1: edge trigger is selected.
0: level trigger is selected.
0
3
IRQ1 Trigger Type Select 1 (IRQ1TTS1):
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
2
IRQ1 Trigger Type Select 0 (IRQ1TTS0):
1: edge trigger is selected
0: level trigger is selected
0
1
IRQ0 Trigger Type Select 1(IRQ0TTS1):
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
0
IRQ0 Trigger Type Select 0(IRQ0TTS0):
1: edge trigger is selected
0: level trigger is selected
0
16.2.2
Status Register (SR)
SR, an 8-bit Read Only register, is used to reflect the status of keyboard controller interface. All
bits in this register are initialized to 0 at reset. SR is not initialized in STANDBY mode.
Bit
7
6
5
4
3
2
1
0
Bit Name
reserved reserved reserved reserved reserved KCR
KCIRQ1 KCIRQ0
Initial Value
-
-
-
-
-
0
0
0
R/W
-
-
-
-
-
R
R
R
Bit
Description
Default
7 - 3
Reserved
-
2
Keyboard Controller Resume (KCR): 1 indicates that the Keyboard Controller signals
resume. Write 1 to clear this bit.
0
1
Keyboard Controller Interrupt Request 1 (KCIRQ1): 1 indicates that the Keyboard
Controller signals IRQ1. Write 1 to clear this bit.
0
0
Keyboard Controller Interrupt Request 0 (KCIRQ0): 1 indicates that the Keyboard
Controller signals IRQ0. Write 1 to clear this bit.
0
Summary of Contents for HD64465
Page 25: ...Rev 3 0 03 01 page 6 of 390 ...
Page 59: ...Rev 3 0 03 01 page 40 of 390 ...
Page 97: ...Rev 3 0 03 01 page 78 of 390 ...
Page 147: ...Rev 3 0 03 01 page 128 of 390 ...
Page 199: ...Rev 3 0 03 01 page 180 of 390 ...
Page 247: ...Rev 3 0 03 01 page 228 of 390 ...
Page 385: ...Rev 3 0 03 01 page 366 of 390 ...
Page 389: ...Rev 3 0 03 01 page 370 of 390 ...
Page 409: ...Rev 3 0 03 01 page 390 of 390 ...