Intel® 82854 Graphics Memory Controller Hub (GMCH)

4.10.11CAPPTR – Capabilities Pointer Register

Address Offset:

34h

Default Value:

00h

Access:

Read Only

Size:

8 bits

The CAPPTR provides the offset that is the pointer to the location of the first device capability in the capability list.

Bit

Descriptions

 

 

7:0

Pointer to the offset of the first capability ID register block: In this case there are no

 

capabilities therefore these bits are hardwired to 00h to indicate the end of the capability-linked

 

list.

 

 

4.10.12HPLLCC – HPLL Clock Control Register (Device #0)

Address Offset:

C0-C1h

Default Value:

 

00h

Access:

 

Read Only

Size:

 

16 bits

 

 

 

Bit

 

Descriptions

 

 

 

 

 

15:11

 

Reserved

 

 

 

 

10

 

HPLL VCO Change Sequence Initiate Bit:

 

 

Software must Write a 0 to clear this bit and then Write a 1 to initiate sequence again.

 

 

 

9

 

Hphase Reset Bit:

 

 

1 = Assert

 

 

 

0 = Deassert (default)

 

 

 

 

8

 

Reserved

 

 

 

 

 

7:2

 

Reserved

 

 

 

 

1:0

 

HPLL Clock Control:

 

 

Software is allowed to update this register.

 

 

See Table 24.

 

 

 

 

 

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D15343-003

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Intel D15343-003 manual Hpllcc Hpll Clock Control Register Device #0, Hpll VCO Change Sequence Initiate Bit