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Table 5-21, Divider chain control / test selection, Table 5-22 – AMD Geode SC3200 User Manual

Page 112: Periodic interrupt rate encoding, Table 5-23, Bcd and binary formats

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112

AMD Geode™ SC3200 Processor Data Book

SuperI/O Module

32581C

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 (ms)

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