Intel Xeon E5502 80602E5502 User Manual

Product codes
80602E5502
Page of 130
Register Description
68
Intel® Xeon® Processor 5500 Series Datasheet, Volume 2
2.9.3
QPI_0_PH_PIS
QPI_1_PH_PIS
Intel QPI Physical Layer Initialization Status Register.
11
RW
0
DISABLE_ISI_CHECK. Defeature mode to disable ISI checking during 
Polling.LaneDeskew state.
10:8
RW
0
INIT_MODE. Initialization mode that determines altered initialization modes. 
7
RW
0
LINK_SPEED. Identifies slow speed or at-speed operation for the Intel QPI 
port.
1 - Force direct operational speed initialization.
0 - Slow speed initialization.
5
RW
1
PHYINITBEGIN. Instructs the port to start initialization.
4
RW
0
SINGLE_STEP. Enables single step mode.
3
RW
0
LAT_FIX_CTL. If set, instructs the remote agent to fix the latency. 
2
RW
0
BYPASS_CALIBRATION. Indicates the physical layer to bypass calibration.
1
RW
0
RESET_MODIFIER. Modifies soft reset to default reset when set.
0
RW1S
0
PHY_RESET. Physical Layer Reset.
Device:
2
Function: 1, 5
Offset:
6Ch
Access as a Dword
Bit
Type
Reset
Value
Description
Device:
2
Function: 1, 5
Offset:
80h
Access as a Dword
Bit
Type
Reset
Value
Description
29
RO
-
GLOBAL_ERROR. Set upon any error detected on the link during Loopback 
Pattern. 
28
RO
-
TEST_BUSY. Test busy bit indicating that a test is in progress.
27
RW1C
0
STATE_HOLD. State machine hold bit for single step and init freeze modes.
26
RO
-
INIT_SPEED. Current initialization speed.
1 - Operational Speed Initialization.
0 - Slow Speed Initialization.
25
RO
-
PORT_RMT_ACK. Port Remote ACK status.
24
RO
-
PORT_TX_RDY. Port Tx Ready status.
20:16
RO
-
RX_STATE. Current state of the local Rx. 
12:8
RO
-
TX_STATE. Current state of the local Tx.
1
RW1C
0
CALIBRATION_DONE. Indicates that calibration has been completed for the 
Intel QPI link.
0
RW1C
0
LINKUP_IDENTIFIER. Link up identifier for the Intel QPI link.
Set to 0 during Default Reset.
Set to 1 when initialization completes and link enters L0.