IBM Intel Xeon E5504 46M1078 User Manual
Product codes
46M1078
Register Description
70
Intel® Xeon® Processor 5500 Series Datasheet, Volume 2
2.9.6
QPI_0_PH_PRT
QPI_1_PH_PRT
Intel QPI Periodic Retraining Timing Register
2.9.7
QPI_0_PH_PMR0
QPI_1_PH_PMR0
Intel QPI Physical Layer Power Management Register.
Device:
2
Function: 1, 5
Offset:
A4h
Access as a Dword
Bit
Type
Reset
Value
Description
22
RW
0
DURATION_GRANULARITY.
1 indicates agent is using 16 UI granularity
0 indicates agent is using 64 UI granularity.
1 indicates agent is using 16 UI granularity
0 indicates agent is using 64 UI granularity.
21:14
RW
-
RETRAIN_PKT_CNT. Retraining packet count.
13:10
RW
-
EXP_RETRAIN_INTERVAL. Exponential count for retraining interval. Interval
value is multiplied by 2^(count in this field). Although these values are
specified in exponential form, counting still needs to be accurate to single UI.
7:0
RW
-
RETRAIN_INTERVAL. Periodic retraining interval. A value of 0 indicates
periodic retraining is disabled.
Retraining must be disabled in Slow Mode.
Value to be programmed by firmware. Each count represents 1024 UI (16 TSL)
Device:
2
Function: 1, 5
Offset:
D0h
Access as a Dword
Bit
Type
Reset
Value
Description
27:26
RW
0
L0s_SLEEP_MIN_REM.
Remote agent's minimum L0S time.
00 -> 32 UI
01 -> 48 UI
10 -> 64 UI
11 -> 96 UI
Remote agent's minimum L0S time.
00 -> 32 UI
01 -> 48 UI
10 -> 64 UI
11 -> 96 UI
21:16
RW
0
L0s_WAKE_REM. Remote agent's L0S wake time in effect. Value is
(field+1)*16 UI.
11:10
RW
-
L0s_SLEEP_MIN. Minimum time local Tx on a port initiating L0s entry should
stay in L0s.
00 -> 32 UI
01 -> 48 UI
10 -> 64 UI
11 -> 96 UI
00 -> 32 UI
01 -> 48 UI
10 -> 64 UI
11 -> 96 UI
5:0
RW
-
L0s_WAKE. L0s Wake-up time to be used by remote Tx.
This parameter value is derived from field value as (field + 1)*16 UI.
Field value of 0 (parameter value of 16) means L0s is not supported.