Internet Data Sheet
HYS[64/72]T[32/64/128]xx0HU-[25F/2.5/3/3S/3.7/5]-B
Unbuffered DDR2 SDRAM Module
4
SPD Codes
This chapter lists all hexadecimal byte values stored in the EEPROM of the products described in this data sheet. SPD stands
for serial presence detect. All values with XX in the table are module specific bytes which are defined during production.
List of SPD Code Tables
•
•
•
•
•
•
•
•
Table 30 “SPD Codes for HYS[64/72]T[32/64/128]xxxHU–25F–B” on Page 43
Table 31 “SPD Codes for HYS[64/72]T[32/64/128]xxxHU–2.5–B” on Page 48
Table 32 “SPD Codes for HYS[64/72]T[32/64/128]xxxHU–3–B” on Page 53
Table 33 “SPD Codes for HYS64T[32/64]x00HU–3S–B” on Page 58
Table 34 “SPD Codes for HYS[64/72]T[64/128]xx0HU–3S–B” on Page 62
Table 35 “SPD Codes for HYS64T[32/64]x00HU–3.7–B” on Page 66
Table 36 “SPD Codes for HYS[64/72]T[64/128]xx0HU–3.7–B” on Page 70
Table 37 “SPD Codes for HYS[64/72]T[32/64/128]xxxHU–5–B” on Page 74
TABLE 30
SPD Codes for HYS[64/72]T[32/64/128]xxxHU–25F–B
Product Type
Organization
256MB
512MB
512MB
1 GByte 1 GByte
×64
×64
×72
×64
×72
1 Rank
1 Rank
1 Rank
2 Ranks 2 Ranks
(×16)
(×8)
(×8)
(×8)
(×8)
Label Code
PC2–
6400U–
555
PC2–
6400U–
555
PC2–
6400E–
555
PC2–
6400U–
555
PC2–
6400E–
555
JEDEC SPD Revision
Rev. 1.2 Rev. 1.2 Rev. 1.2 Rev. 1.2 Rev. 1.2
Byte#
Description
HEX
HEX
HEX
HEX
HEX
0
1
2
3
4
5
6
Programmed SPD Bytes in EEPROM
Total number of Bytes in EEPROM
Memory Type (DDR2)
80
08
08
0D
0A
60
40
80
08
08
0E
0A
60
40
80
08
08
0E
0A
60
48
80
08
08
0E
0A
61
40
80
08
08
0E
0A
61
48
Number of Row Addresses
Number of Column Addresses
DIMM Rank and Stacking Information
Data Width
Rev. 1.3, 2006-12
43
03292006-6GMD-RSFT
QIMONDA [ QIMONDA AG ]
