IBM Intel Xeon E5504 46M1078 User Manual

86

Intel® Xeon® Processor 5500 Series Datasheet, Volume 2

Memory test Control Register

Memory test physical layer initialization status

Pattern Generator Control

10:8

RW

0

INIT_MODE: Initialization Mode

Idle: 000
Loopback: 001
Memtest: 110
Meminit: 111

29

RO

-

GLOBAL_ERROR: Indication that an error was detected during a memory test.

28:24

RW

6

EXP_LOOP_CNT: Sets the length of the test, defined as 2^(EXP_LOOP_CNT)

21

RW

0

ERROR_COUNT_STALL: Masks all detected errors until cleared

20

RW1S

0

STOP_TEST: Force exit from Loopback.Pattern

19

RW

0

DRIVE_DC_ZERO: Drive 0 on lanes with PAT_DCD asserted

13:12

RW

0

PATBUF_WD_SEL: Select word within pattern buffer to be written

10:9

RW

0

PATBUF_SEL: Select which pattern buffer will be written when 

MC_TEST_PAT_BA is written

5

RW

0

IGN_REM_PARAM: Slave will ignore remote parameters transmitted in 

Loopback.Marker

4

RW

0

ENABLE_LFSR2: Use scrambled output of Pattern Buffer 2

3

RW

0

ENABLE_LFSR1: Use scrambled output of Pattern Buffer 1

2

RW

1

ENABLE_AUTOINV: Inversion pattern register will rotate automatically once 

per loop

1

RW

0

STOP_ON_ERROR: Exit Loopback.Pattern upon first detected error

0

RW1S

0

START_TEST: Initiate transition to Loopback.Pattern