Registers
14.3.1.20 NBCALSTATUS: Northbound 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:
Bit
7Eh
Attr
Default
Description
15:14
13:0
RV
0h
0h
Reserved
RWST
CALSTATUS: Calibration status
0 - Pass
1 - Fail
14.3.2
SM Bus Register
Since the AMB will never be a master on the SM Bus and will never write to the
EEPROM, SM Bus registers related to being a master are not required.
14.3.2.1
CBC: Chip Boot Configuration
This register reports AMB DIMM ID from pins BFUNC, SA[2:0]. SM Bus NodeID can be
calculated from the DIMM ID as follows:
If DIMMID[3] = 0: (BFUNC =0) Normal DIMM
• NODEID[6:3] = “101_1” or “B”
NODEID[2:0] = DIMMID[2:0] the value from pins SA[2:0]
If DIMMID[3] = 1: (BFUNC =1) Repeater or LAI
• NODEID[6:3] = “001_1” or “3”
NODEID[2:0] = DIMMID[2:0] the value from pins SA[2:0]
Device:
NodeID
Function: 1
Offset:
Bit
88h
Attr
Default
Description
7:4
3:0
RV
RO
0
0
Reserved
DIMMID: SM Bus NodeID
Value from pins BFUNC, SA[2:0]
180
Intel® 6400/6402 Advanced Memory Buffer Datasheet
INTEL [ INTEL ]
