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Thread: Fixing DDR SDRAM Memory Modules' SPD Information

  1. #1
    Registered User
    Join Date
    Feb 2009
    Posts
    11

    Fixing DDR SDRAM Memory Modules' SPD Information

    I want to properly set the SPD data of two modules and correct for any errors there may be.

    I have two, double-sided DIMMs of DDR SDRAM modules from an unknown original source. The modules use Hynix HY5DU12822DTP-D43 memory chips. The modules' SPD data seem to have been edited and one module appears to have the EEPROM replaced. The sticker labels do not appear to be from any particular memory OEM.

    I have provided a picture of the memory modules.
    I have dumped the SPD data of the modules with SPDTool 0.63 and have attached them here.
    The datasheet for the memory chips may be found: http://docs-usa.electrocomponents.co...tockno=6686199 .

    The CPU- Z 1.64.0.x32 data from the modules:
    Code:
    Memory SPD
    -------------------------------------------------------------------------
    
    DIMM #				1
    	SMBus address		0x50
    	Memory type		DDR
    	Manufacturer (ID)	PNY Electronics (7FBA000000000000)
    	Size			1024 MBytes
    	Max bandwidth		PC3200 (200 MHz)
    	Part number		
    	Manufacturing date	Week 07/Year 69
    	Number of banks		2
    	Data width		64 bits
    	Correction		None
    	Registered		no
    	Buffered		no
    	Nominal Voltage		2.50 Volts
    	EPP			no
    	XMP			no
    	AMP			no
    JEDEC timings table		CL-tRCD-tRP-tRAS-tRC @ frequency
    	JEDEC #1		2.0-2-2-6-n.a. @ 133 MHz
    	JEDEC #2		2.5-3-3-7-n.a. @ 166 MHz
    	JEDEC #3		3.0-3-3-8-n.a. @ 200 MHz
    
    DIMM #				2
    	SMBus address		0x52
    	Memory type		DDR
    	Manufacturer (ID)	 (0000000000000000)
    	Size			1024 MBytes
    	Max bandwidth		PC3200 (200 MHz)
    	Part number		
    	Serial number		FFFFFFFF
    	Manufacturing date	Week 255/Year 255
    	Number of banks		2
    	Data width		64 bits
    	Correction		None
    	Registered		no
    	Buffered		no
    	Nominal Voltage		2.50 Volts
    	EPP			no
    	XMP			no
    	AMP			no
    JEDEC timings table		CL-tRCD-tRP-tRAS-tRC @ frequency
    	JEDEC #1		2.0-2-2-6-n.a. @ 133 MHz
    	JEDEC #2		2.5-3-3-7-n.a. @ 166 MHz
    	JEDEC #3		3.0-3-3-8-n.a. @ 200 MHz
    
    DIMM #				1
    SPD registers	
    		00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 
    	00	80 08 07 0D 0B 02 40 00 04 50 70 00 82 08 00 01 
    	10	0E 04 1C 01 02 20 30 60 70 75 70 3C 28 3C 28 80 
    	20	60 60 40 40 00 00 00 00 00 37 46 30 28 50 00 00 
    	30	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1B 
    	40	7F BA 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    	50	00 00 00 00 00 00 00 00 00 00 00 00 00 45 07 00 
    	60	00 00 00 FF 00 00 00 00 50 4E 59 20 54 65 63 68 
    	70	6E 6F 6C 6F 67 69 65 73 2C 20 49 6E 63 2E 00 00 
    	80	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    	90	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    	A0	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    	B0	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    	C0	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    	D0	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    	E0	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    	F0	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    
    DIMM #				2
    SPD registers	
    		00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 
    	00	80 08 07 0D 0B 02 40 00 04 50 70 00 82 08 00 01 
    	10	0E 04 1C 01 02 20 00 60 70 75 70 3C 28 3C 28 80 
    	20	60 60 40 40 00 00 00 00 00 37 46 30 28 50 00 00 
    	30	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 EB 
    	40	00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
    	50	00 00 00 00 00 00 00 00 00 00 00 00 00 FF FF FF 
    	60	FF FF FF 00 00 00 00 00 00 00 00 00 00 00 00 00 
    	70	00 00 00 00 00 00 00 00 00 00 00 00 00 00 FF FF 
    	80	FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
    	90	FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
    	A0	FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
    	B0	FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
    	C0	FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
    	D0	FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
    	E0	FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
    	F0	FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
    I request assistance in determining proper SPD register vales for the two modules.
    Attached Images Attached Images
    Attached Files Attached Files

  2. #2
    Xtreme Cruncher
    Join Date
    Nov 2005
    Location
    Rhode Island
    Posts
    3,064
    Seesh that's a tall order. Best advice I can see is to just clone the SPD off a known good similar stick.
    Fold for XS!
    You know you want to

  3. #3
    Registered User
    Join Date
    Feb 2009
    Posts
    11
    I did not have a known good similar sick to clone the SPD data from. I did, however, find a dump from the Thaiphoon Burner software database that included most of what appeared to be the correct ODM SPD data. From that I was able to fix the SPDs. The original brand, if any is still unknown, but that is acceptable.

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