313072-002 Datasheet, PDF (176/250 Pages) Intel Corporation – Advanced Memory Buffer

Registers
14.3.1.10 LINKPARNXT: 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: 56h
Bit
15:2
1:0
Attr
RV
RWST
Default
0h
Description
Reserved
CFREQ: Current Link Frequency
• 11 = DDR2-800
• 10 = DDR2-667
• 01 = DDR2-533
• 00 = Uninitialized
14.3.1.11 FBDSBCFGCUR: FBD SB Link Electrical Configuration
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: 50h
Bit
Attr
7:5
RV
4:3
ROST
2:1
ROST
0
ROST
Default
0h
00b
10b
1
Description
Reserved
SBTXDRVCUR:
‘11’ = Small
‘10’ = reserved
‘01’ = Regular
‘00’ = Large
SBTXDEEMP:
00 = 0 dB
01 = 3.5dB
10 = 6dB
11 = 9.5dB
SBRESYNCEN:
‘1’ = SB pass-thru data is in Re-sync mode
‘0’ = SB pass-thru is in Re-sample mode.
176
Intel® 6400/6402 Advanced Memory Buffer Datasheet