Memory Serial Presence Detect Decoder

By Philip Edelbrock, Christian Zuckschwerdt, Burkart Lingner,
Jean Delvare and others
Version 2.10.1



Decoding EEPROM: /sys/bus/i2c/drivers/eeprom/0-0050
Guessing DIMM is inbank 1
SPD EEPROM Information
EEPROM Checksum of bytes 0-62OK (0x33)
# of bytes written to SDRAM EEPROM128
Total number of bytes in EEPROM256
Fundamental Memory typeDDR SDRAM
SPD Revision0.0
Memory Characteristics
Maximum module speed266MHz (PC2100)
Size512 MB
tCL-tRCD-tRP-tRAS2.5-3-3-6
Supported CAS Latencies2.5, 2
Supported CS Latencies0
Supported WE Latencies1
Minimum Cycle Time (CAS 2.5)7.5 ns
Maximum Access Time (CAS 2.5)0.75 ns
Minimum Cycle Time (CAS 2)10 ns
Maximum Access Time (CAS 2)0.75 ns
Manufacturing Information
ManufacturerHyundai Electronics
Manufacturing Location Code0x01
Part NumberHYMD264G726B4M-H
Revision Code0x4141
Manufacturing Date2004-W07
Assembly Serial Number0xFFFF0210


Decoding EEPROM: /sys/bus/i2c/drivers/eeprom/0-0052
Guessing DIMM is inbank 3
SPD EEPROM Information
EEPROM Checksum of bytes 0-62OK (0x33)
# of bytes written to SDRAM EEPROM128
Total number of bytes in EEPROM256
Fundamental Memory typeDDR SDRAM
SPD Revision0.0
Memory Characteristics
Maximum module speed266MHz (PC2100)
Size512 MB
tCL-tRCD-tRP-tRAS2.5-3-3-6
Supported CAS Latencies2.5, 2
Supported CS Latencies0
Supported WE Latencies1
Minimum Cycle Time (CAS 2.5)7.5 ns
Maximum Access Time (CAS 2.5)0.75 ns
Minimum Cycle Time (CAS 2)10 ns
Maximum Access Time (CAS 2)0.75 ns
Manufacturing Information
ManufacturerHyundai Electronics
Manufacturing Location Code0x01
Part NumberHYMD264G726B4M-H
Revision Code0x4141
Manufacturing Date2004-W07
Assembly Serial Number0xFFFF0312


Decoding EEPROM: /sys/bus/i2c/drivers/eeprom/0-0057
Guessing DIMM is inbank 8
SPD EEPROM Information
EEPROM Checksum of bytes 0-62Bad
(found 0x00, calculated 0xF9)


Number of SDRAM DIMMs detected and decoded: 2