Table 5-21, Divider chain control / test selection, Table 5-22 – AMD Geode SC1201 User Manual
Page 114: Periodic interrupt rate encoding, Table 5-23, Bcd and binary formats
114
AMD Geode™ SC1200/SC1201 Processor Data Book
SuperI/O Module
32579B
Table 5-21. Divider Chain Control / Test Selection
DV2
DV1
DV0
Configuration
CRA6
CRA5
CRA4
0
0
X
Oscillator Disabled
0
1
0
Normal Operation
0
1
1
Test
1
0
X
1
1
X
Divider Chain Reset
Table 5-22. Periodic Interrupt Rate Encoding
Rate Select
3 2 1 0
Periodic Interrupt
Rate (msec)
Divider
Chain Output
0 0 0 0
No interrupts
0 0 0 1
3.906250
7
0 0 1 0
7.812500
8
0 0 1 1
0.122070
2
0 1 0 0
0.244141
3
0 1 0 1
0.488281
4
0 1 1 0
0.976562
5
0 1 1 1
1.953125
6
1 0 0 0
3.906250
7
1 0 0 1
7.812500
8
1 0 1 0
15.625000
9
1 0 1 1
31.250000
10
1 1 0 0
62.500000
11
1 1 0 1
125.000000
12
1 1 1 0
250.000000
13
1 1 1 1
500.000000
14
Table 5-23. BCD and Binary Formats
Parameter
BCD Format
Binary Format
Seconds
00 to 59
00 to 3B
Minutes
00 to 59
00 to 3B
Hours
12-hour mode:
01 to 12 (AM)
81 to 92 (PM)
24-hour mode:
00 to 23
12-hour mode:
01 to 0C (AM)
81 to 8C (PM)
24-hour mode:
00 to 17
Day
01 to 07 (Sunday = 01)
01 to 07
Date
01 to 31
01 to 1F
Month
01 to 12 (January = 01)
01 to 0C
Year
00 to 99
00 to 63
Century
00 to 99
00 to 63