32579B

SuperI/O Module

 

 

Table 5-21. Divider Chain Control / Test Selection

DV2

DV1

DV0

 

 

 

 

 

CRA6

CRA5

CRA4

Configuration

 

 

 

 

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

Periodic Interrupt

Divider

3 2 1 0

Rate (msec)

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)

12-hour mode:

01 to 0C (AM)

 

 

81 to 92 (PM)

 

81 to 8C (PM)

 

24-hour mode:

00 to 23

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

 

 

 

 

 

 

114

AMD Geode™ SC1200/SC1201 Processor Data Book

Page 114
Image 114
AMD SC1200, SC1201 manual Divider Chain Control / Test Selection, Periodic Interrupt Rate Encoding, BCD and Binary Formats