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:
Bit
56h
Attr
Default
Description
15:2
1:0
RV
0h
Reserved
CFREQ: Current Link Frequency
RWST
•
•
•
•
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:
Bit
50h
Attr
Default
Description
7:5
4:3
RV
0h
Reserved
ROST
00b
SBTXDRVCUR:
‘11’ = Small
‘10’ = reserved
‘01’ = Regular
‘00’ = Large
2:1
ROST
ROST
10b
SBTXDEEMP:
00 = 0 dB
01 = 3.5dB
10 = 6dB
11 = 9.5dB
0
1
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