32580BGeneral Configuration Block

 

 

 

Table 4-8. Clock Generator Configuration (Continued)

Bit

Description

 

 

15:14

Reserved.

 

 

13

Reserved. Must be set to 0.

 

 

12

Reserved. Must be set to 0.

 

 

11:10

Reserved.

 

 

9:8

FPCICK (Internal Fast-PCI Clock). (Read Only) Reflects the internal Fast-PCI clock and is the input to the GX1 module

 

that is used to generate the core clock. These bits reflect the value of strap pins CLKSEL[1:0].

 

00:

33.3 MHz

 

01:

48 MHz

 

10:

66.7 MHz

 

11:

33.3 MHz

 

 

7:4

Reserved.

 

 

3:0

MVAL (Multiplier Value). This 4-bit value controls the multiplier in ADL. The value is set according to the Maximum Clock

 

Multiplier bits of the MCCM register (Offset 10h). The multiplier value should never be written with a multiplier which is differ-

 

ent from the multiplier indicated in the MCCM register.

 

0100:

Multiply by 4

 

0101:

Multiply by 5

 

0110:

Multiply by 6

 

0111:

Multiply by 7

 

1000:

Multiply by 8

 

1001:

Multiply by 9

 

1010:

Multiply by 10

 

Other:

Reserved

 

 

 

 

92

AMD Geode™ SC2200 Processor Data Book

Page 88
Image 88
AMD SC2200 manual 1514, 1110, 33.3 MHz, 66.7 MHz, Ent from the multiplier indicated in the Mccm register