313072-002 Datasheet, PDF (172/250 Pages) Intel Corporation – Advanced Memory Buffer

Registers
14.3.1.4
FBDS3: FBD Status 3
This register contains copies of bits that were returned by the AMB in the most recent
northbound status frame when the SYNC command R[1:0] field is 2’b11. This can also
be written with an override value that will be returned if selected during SYNC
command.
14.3.1.5
Device: NodeID
Function: 1
Offset: 43h
Bit
Att
r
7:6 RV
5 RW
Default
0h
0h
4 RW
1h
3:0 RW
0h
Description
Reserved
OVREN: Use values written by user.
Setting this bit causes the values specified in the lower 5 bits
of this register returned as-is if requested by SYNC command.
USRPAR: User Specified parity for USRVAL
USRVAL: User Specified value
MODES: Operating Mode
This register contains overview configuration status of chip.
14.3.1.6
Device: NodeID
Function: 1
Offset: 5Ch
Bit
Att
r
7 RO
6 RO
5 RO
4 RO
3:0 RV
Default
1
0
0
0
0
Description
NORMAL:
• 1 = Normal AMB Buffer
LAI:
• 1 = LAI
REPEATER:
• 1 = Repeater
TRANSPARENT:
• 1 = Transparent Test Mode
Reserved
FEATURES: Capabilities
This register reports optional capabilities of this DIMM.
Device: NodeID
Function: 1
Offset: 60h
Bit
31:15
14:11
Attr
RV
RO
Default
0h
0011
Description
Reserved
DDRFREQ: DDR2 frequencies supported
• 1XXX = reserved
• X1XX = DDR2-800
• XX1X = DDR2-667
• XXX1 = DDR2-533
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Intel® 6400/6402 Advanced Memory Buffer Datasheet