Datasheet
Processor Uncore Configuration Registers
254 Datasheet, Volume 2
4.10.23 MC_CHANNEL_0_WAQ_PARAMS
MC_CHANNEL_1_WAQ_PARAMS
This register contains parameters that specify settings for the Write Address Queue.
Device: 4, 5
Function: 0
Offset: B4h
Access as a DWord
Bit Attr Default Description
31:30 RO 0 Reserved
29:25 RW 6
PRECASWRTHRESHOLD
Threshold above which Medium-Low Priority reads cannot PRE-CAS write
requests.
24:20 RW 31
PARTWRTHRESHOLD
Threshold used to raise the priority of underfill requests in the scheduler.
Set to 31 to disable.
19:15 RW 31
ISOCEXITTHRESHOLD
Write Major Mode ISOC Exit Threshold. When the number of writes in the
WAQ drops below this threshold, the MC will exit write major mode in the
presence of a read.
14:10 RW 31
ISOCENTRYTHRESHOLD
Write Major Mode ISOC Entry Threshold. When the number of writes in the
WAQ exceeds this threshold, the MC will enter write major mode in the
presence of a read.
9:5 RW 22
WMENTRYTHRESHOLD
Write Major Mode Entry Threshold. When the number of writes in the WAQ
exceeds this threshold, the MC will enter write major mode.
4:0 RW 22
WMEXITTHRESHOLD
Write Major Mode Exit Threshold. When the number of writes in the WAQ
drop below this threshold, the MC will exit write major mode.