Intel
®
Server System R1000WF Product Family System Integration and Service Guide
101
Checkpoint
Diagnostic LED Decoder
Description
1 = LED On, 0 = LED Off
Upper Nibble
(Amber - Read
1
st
)
Lower Nibble
(Green - Read
2
nd
)
MSB
LSB
8h 4h 2h 1h 8h 4h 2h 1h
4Ah
0
1
0
0
1
0
1
0
Recovery PEIM (Capsule loaded)
E8h
1
1
1
0
1
0
0
0
No Usable Memory Error:
E9h
1
1
1
0
1
0
0
1
Memory is locked by Intel® Trusted Execution Technology and is
inaccessible.
EAh
1
1
1
0
1
0
1
0
DDR4 Channel Training Error:
EBh
1
1
1
0
1
0
1
1
Memory Test Failure
EDh
1
1
1
0
1
1
0
1
DIMM Configuration/Population Error
EFh
1
1
1
0
1
1
1
1
Indicates a CLTT table structure error
B0h
1
0
1
1
0
0
0
0
Detect DIMM population
B1h
1
0
1
1
0
0
0
1
Set DDR4 frequency
B2h
1
0
1
1
0
0
1
0
Gather remaining SPD data
B3h
1
0
1
1
0
0
1
1
Program registers on the memory controller level
B4h
1
0
1
1
0
1
0
0
Evaluate RAS modes and save rank information
B5h
1
0
1
1
0
1
0
1
Program registers on the channel level
B6h
1
0
1
1
0
1
1
0
Perform the JEDEC defined initialization sequence
B7h
1
0
1
1
0
1
1
1
Train DDR4 ranks
B8h
1
0
1
1
1
0
0
0
Initialize CLTT/OLTT
B9h
1
0
1
1
1
0
0
1
Hardware memory test and init
BAh
1
0
1
1
1
0
1
0
Execute software memory init
BBh
1
0
1
1
1
0
1
1
Program memory map and interleaving
BCh
1
0
1
1
1
1
0
0
Program RAS configuration
BFh
1
0
1
1
1
1
1
1
MRC is done
Содержание R1000WF Series
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