6402 datasheet(172/250 Pages) INTEL

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Registers

172

Intel® 6400/6402 Advanced Memory Buffer Datasheet

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

MODES: Operating Mode

This register contains overview configuration status of chip.

14.3.1.6

FEATURES: Capabilities

This register reports optional capabilities of this DIMM.

Device:

NodeID

Function: 1

Offset:

43h

Bit

Att

Default

Description

7:6

Reserved

5RW

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.

4RW

USRPAR: User Specified parity for USRVAL

3:0

USRVAL: User Specified value

Device:

NodeID

Function: 1

Offset:

5Ch

Bit

Att

Default

Description

7RO

NORMAL:

• 1 = Normal AMB Buffer

6RO

LAI:

•1 = LAI

5RO

REPEATER:

•1 = Repeater

TRANSPARENT:

• 1 = Transparent Test Mode

3:0

Reserved

Device:

NodeID

Function: 1

Offset:

60h

Bit

Attr

Default

Description

31:15

Reserved

14:11

0011

DDRFREQ: DDR2 frequencies supported

• 1XXX = reserved

• X1XX = DDR2-800

• XX1X = DDR2-667

• XXX1 = DDR2-533

6402 Datasheet(PDF) 172 Page - Intel Corporation

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