cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 326

• Manufacturer Part Number: cs5535
• Description: Geode Cs5535 Companion Multi-function South Bridge
• Manufacturer: National Semiconductor Corporation

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PIT Register Descriptions
5.8.2.3
I/O Address
Type
Reset Value
I/O Address 43h[7:0] = 1101xx10 or 0010xxxx
I/O Address 43h[7:0] = 11110xx10
Bit
7:0
5:4
3:1
Bit
7:0
7
6
0
7
PIT Timer 1 Counter - Refresh (PIT_TMR1_CNTR_RFSH)
Name
CNTR0_CUR_
COUNT
CNTR0_OUT
CNTR0_LOAD
CNTR0_RW
CNTR0_MODE
BCD
Name
CNTR1
41h
W
00h
6
Description
Counter 0 Current Count. Reports the current count value in Counter 0.
Counter 0 Output. Returns current state of counter output signal.
Counter 0 Loaded. Last count written is loaded?
0: Yes.
1: No.
Counter 0 Read /Write Mode.
00: Counter latch command.
01: R/W LSB only.
10: R/W MSB only.
11: R/W LSB, followed by MSB.
Counter 0 Current Mode.
000: Interrupt on terminal count.
001: Programmable one-shot.
010, 110: Rate generator.
011, 111: Square wave generator.
100: Software triggered pulse generator.
101: Hardware triggered pulse generator.
BCD Mode.
0: Binary.
1: BCD (binary coded decimal).
Description
Counter 1 Value. Provides the base counter value.
PIT_TMR1_CNTR_RFSH Bit Description
(Continued)
5
PIT_TMR0_STS_SYS Bit Descriptions
PIT_TMR1_CNTR_RFSH Register Map
4
CNTR1
326
3
2
1
Revision 0.8
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