V437464E24VXTG-75 データシートの表示（PDF） - Mosel Vitelic, Corp
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V437464E24VXTG-75 Datasheet PDF : 13 Pages
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MOSEL VITELIC
V437464E24V
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
SPD-Table for modules:
written into the E2PROM device during module pro-
duction using a serial presence detect protocol (I2C
synchronous 2-wire bus)
Byte
Number
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Function Described
Number of SPD bytes
Total bytes in Serial PD
Memory Type
Number of Row Addresses (without BS bits)
Number of Column Addresses (for x8
SDRAM)
Number of DIMM Banks
Module Data Width
Module Data Width (continued)
Module Interface Levels
SDRAM Cycle Time at CL=3
SDRAM Access Time from Clock at CL=3
Dimm Config (Error Det/Corr.)
Refresh Rate/Type
SDRAM width, Primary
Error Checking SDRAM Data Width
Minimum Clock Delay from Back to Back
Random Column Address
Burst Length Supported
Number of SDRAM Banks
Supported CAS Latencies
CS Latencies
WE Latencies
SDRAM DIMM Module Attributes
SDRAM Device Attributes: General
Minimum Clock Cycle Time at CAS Latency
=2
Maximum Data Access Time from Clock for
CL = 2
Minimum Clock Cycle Time at CL = 1
Maximum Data Access Time from Clock at
CL = 1
Minimum Row Precharge Time
SPD Entry Value
128
256
SDRAM
13
10
2
72
0
LVTTL
7.5 ns/10.0 ns
5.4 ns/6.0 ns
ECC
Self-Refresh, 7.8µs
x8
n/a / x8
tccd = 1 CLK
1, 2, 4, 8
4
CL = 2,3
CS Latency = 0
WL = 0
Registered/Buffered
Vcc tol ± 10%
7.5 ns /10.0 ns
5.4 ns/6.0 ns
Not Supported
Not Supported
15 ns/20 ns
-75PC
80
08
04
0D
0A
Hex Value
-75
80
08
04
0D
0A
-10PC
80
08
04
0D
0A
02
02
02
48
48
48
00
00
00
01
01
01
75
75
A0
54
54
60
02
02
02
82
82
82
08
08
08
08
08
08
01
01
01
0F
0F
0F
04
04
04
06
06
06
01
01
01
01
01
01
1F
1F
1F
0E
0E
0E
75
A0
A0
54
60
60
00
00
00
00
00
00
0F
14
14
V437464E24V Rev. 1.0 January 2002
5
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