4
V437316S04V Rev. 1.0 December 2001
MO SEL VITELIC
V437316S04V
Serial Presence Detect Information
A serial presence detect storage device -
E2PROM - is assembled onto the module. Informa-
tion about the module configuration, speed, etc. is
writtenintotheE
2PROM device during module pro-
duction using a serial presence detect protocol (I2C
synchronous 2-wire bus)
SPD-Table
Byte Num-
ber Function Described SPD Entry Value
Hex Value
-75PC -75 -10PC
0 Number of SPD bytes 128 80 80 80
1 Total bytes in Serial PD 256 08 08 08
2 Memory Type SDRAM 04 04 04
3 Number of Row Addresses (without BS bits) 12 0C 0C 0C
4 Number of Column Addresses (for x8
SDRAM) 10 0A 0A 0A
5 Number of DIMM Banks 1 01 01 01
6 Module Data Width 72 48 48 48
7 Module Data Width (continued) 0 00 00 00
8 Module Interface Levels LVTTL 01 01 01
9 SDRAM Cycle Time at CL=3 7.5 ns 75 75 A0
10 SDRAM Access Time from Clock at CL=3 5.4 ns 54 54 60
11 Dimm Config (Error Det/Corr.) ECC 02 02 02
12 Refresh Rate/Type Self-Refresh, 15.6µs80 80 80
13 SDRAM width, Primary x8 08 08 08
14 Error Checking SDRAM Data Width n/a / x8 08 08 08
15 Minimum Clock Delay from Back to Back
Random
Column Address
tccd =1CLK 01 01 01
16 Burst Length Supported 1, 2, 4, 8 0F 0F 0F
17 Number of SDRAM Banks 4 04 04 04
18 Supported CAS Latencies CL = 3 06 06 06
19 CS Latencies CS Latency = 0 01 01 01
20 WE Latencies WL = 0 01 01 01
21 SDRAM DIMM Module Attributes Non Buffered/Non Reg. 00 00 00
22 SDRAM Device Attributes: General Vcc tol ± 10% 0E 0E 0E
23 Minimum Clock Cycle Time at CAS Latency
=2 Not Supported 75 A0 A0
24 Maximum Data Access Time from Clock for
CL = 2 Not Supported 54 60 60
25 MinimumClockCycleTimeatCL=1 NotSupported 00 00 00
26 Maximum Data Access Time from Clock at
CL = 1 Not Supported 00 00 00
27 Minimum Row Precharge Time 20 ns 0F 14 14