IBM Intel Xeon E5504 46M1078 User Manual

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Intel® Xeon® Processor 5500 Series Datasheet, Volume 2

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.

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.