6402 datasheet(177/250 Pages) INTEL

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Intel® 6400/6402 Advanced Memory Buffer Datasheet

177

Registers

14.3.1.12 FBDNBCFGCUR: FBD NB Link Electrical Configuration

This register contains current settings of control bits to set link electrical parameters to

match link length and frequency characteristics.

14.3.1.13 LINKPARCUR: FBD Link Frequency

This register contains current settings of control bits to set link electrical parameters to

match link length and frequency characteristics

Device:

NodeID

Function: 1

Offset:

51h

Bit

Attr

Default

Description

7:5

Reserved

4:3

ROST

NBTXDRVCUR:

‘11’ = Small

‘10’ = reserved

‘01’ = Regular

‘00’ = Large

2:1

ROST

10b

NBTXDEEMP:

00 = 0 dB

01 = 3.5dB

10 = 6dB

11 = 9.5dB

0ROST

NBRESYNCEN:

‘1’ = SB pass-thru data is in Re-sync mode

‘0’ = SB pass-thru is in Re-sample mode.

Device:

NodeID

Function: 1

Offset:

52h

Bit

Attr

Default

Description

15:2

Reserved

1:0

ROST

CFREQ: Current Link Frequency

• 11 = DDR2-800

• 10 = DDR2-667

• 01 = DDR2-533

• 00 = Reserved

6402 Datasheet(PDF) 177 Page - Intel Corporation

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