6402 datasheet(179/250 Pages) INTEL

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Intel® 6400/6402 Advanced Memory Buffer Datasheet

179

Registers

14.3.1.17 RECALDUR: FBD Recalibrate Duration

This register determines the duration of the Recalibration state between 32 and 42

frames. During recalibration state all commands and CRC are ignored.

14.3.1.18 SYNCTRAININT: SYNC Train Interval register

This register sets the typical spacing of sync commands on the link.

14.3.1.19 SBCALSTATUS: Southbound Calibration Status

This register contains the pass/fail information of the last calibration on a per lane basis

for the southbound. The AMB is expected to log the information when it is asked to go

through calibration. The register is always cleared when entering the calibration state.

This register will be used for debug purposes.

Device:

NodeID

Function: 1

Offset:

70h

Bit

Attr

Default

Description

7RV

Reserved

6:1

Recalibrate_Duration: This field sets the duration of the Recalibrate

state once a sync command with the ERC bit. set is received. Legal

values are between 32 and 42. Functionality if set outside this

range is undefined.

• > ‘42d (101010b) = undefined

• = ‘42d (101010b) = ignore for 42 frames after Sync

•....

• = 32d (100000b) = ignore for 32 frames after Sync

• <32d (100000b) = undefined

0RV

Reserved

Device:

NodeID

Function: 1

Offset:

78h

Bit

Attr

Default

Description

7:0

RWST

2Ah

SyncTrainInt: This field sets the min spacing for sync cmds

default value 42d (101010b)

min value 32, max value=255

Device:

NodeID

Function: 1

Offset:

7Ch

Bit

Attr

Default

Description

15:10

Reserved

9:0

RWST

CALSTATUS: Calibration status

0 - Pass

1 - Fail

6402 Datasheet(PDF) 179 Page - Intel Corporation

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