Intel E7-8891 v2 CM8063601377422 Manuale Utente

Intel

®

 Xeon

® 

Processor E7-2800/4800/8800 v2 Product Family

101

Datasheet Volume Two: Functional Description, February 2014

MEMHOT TEMP Status.

19:16

RO

0xa

MH1_1ST_CHN_ASTN (mh1_1st_chn_astn):

MemHot[1]# 1st Channel Association bit 19: is valid bit. Note: Valid bit 

means the association is valid and it does not implies the channel is 

populated.
bit 18-16: 1st channel ID within this MEMHOT domain
Note: This register is hardcoded in design. It is read-accessible by firmware. 

Design must make sure this register is not removed by downstream tools.

15:8

RV

-

Reserved.

7:4

RO

0x9

MH0_2ND_CHN_ASTN (mh0_2nd_chn_astn):

MemHot[0]# 2nd Channel Association bit 7: is valid bit. Note: Valid bit 

means the association is valid and it does not implies the channel is 

populated.
bit 6-4: 2nd channel ID within this MEMHOT domain
Note: This register is hardcoded in design. It is read-accessible by firmware. 

Design must make sure this register is not removed by downstream tools.

3:0

RO

0x8

MH0_1ST_CHN_ASTN (mh0_1st_chn_astn):

MemHot[0]# 1st Channel Association bit 3: is valid bit. Note: Valid bit 

means the association is valid and it does not implies the channel is 

populated or exist.
bit 2-0: 1st channel ID within this MEMHOT domain
Note: This register is hardcoded in design. It is read-accessible by firmware. 

Design must make sure this register is not removed by downstream tools.

31:31

RW_V

0x0

MH1_DIMM_VAL (mh1_dimm_val):

Valid if set. PCU microcode search the hottest DIMM temperature and write 

the hottest temperature and the corresponding Hottest DIMM CID/ID and 

set the valid bit. MEMHOT hardware logic process the corresponding 

MEMHOT data when there is a MEMHOT event. Upon processing, the valid 

bit is reset. PCU microcode can write over existing valid temperature since a 

valid temperature may not occur during a MEMHOT event. If PCU microcode 

set the valid bit occur at the same cycle that the MEMHOT logic processing 

and try to clear, the PCU microcode set will dominate since it is a new 

temperature is updated while processing logic tries to clear an existing 

temperature.