參數(shù)資料
型號(hào): IBM13M8734HCC
廠商: IBM Microeletronics
英文描述: 8M x 72 1 Bank Registered/Buffered SDRAM Module(8M x 72 1組寄存/緩沖同步動(dòng)態(tài)RAM模塊)
中文描述: 8米× 72 1銀行注冊(cè)/緩沖內(nèi)存模組(8米× 72 1組寄存/緩沖同步動(dòng)態(tài)內(nèi)存模塊)
文件頁數(shù): 7/21頁
文件大?。?/td> 543K
代理商: IBM13M8734HCC
IBM13M8734HCC
8M x 72 1 Bank Registered/Buffered SDRAM Module
19L7145.E93758B
2/99
IBM Corporation. All rights reserved.
Use is further subject to the provisions at the end of this document.
Page 7 of 21
Serial Presence Detect (Part 1 of 3)
Byte #
Description
SPD Entry Value
Serial PD Data Entry
(Hexadecimal)
Notes
0
Number of Serial PD Bytes Written during Production
128
80
1
Total Number of Bytes in Serial PD device
256
08
2
Fundamental Memory Type
SDRAM
04
3
Number of Row Addresses on Assembly
12
0C
4
Number of Column Addresses on Assembly
9
09
5
Number of DIMM Banks
1
01
6 - 7
Data Width of Assembly
x72
4800
8
Assembly Voltage Interface Levels
LVTTL
01
9
SDRAM Device Cycle Time (CL = 3)
10.0ns
A0
1, 2
10
SDRAM Device Access Time from
Clock at CL=3
-260
6.0ns
60
-360
6.0ns
60
-10
8.0ns
80
11
Assembly Error Detection/Correction Scheme
ECC
02
12
Assembly Refresh Rate/Type
SR/1X(15.625us)
80
13
SDRAM Device Width
x8
08
14
Error Checking SDRAM Device Width
x8
08
15
SDRAM Device Attr: Min Clk Delay, Random Col Access
1 Clock
01
16
SDRAM Device Attributes: Burst Lengths Supported
1, 2, 4, 8, Full Page
8F
17
SDRAM Device Attributes: Number of Device Banks
4
04
18
SDRAM Device Attributes: CAS Latency
2, 3
06
19
SDRAM Device Attributes: CS Latency
0
01
20
SDRAM Device Attributes: WE Latency
0
01
21
SDRAM Module Attributes
Registered/Buffered with
PLL
IF
22
SDRAM Device Attributes: General
Write-1/Read Burst, Pre-
charge All, Auto-Precharge
0E
23
Minimum Clock Cycle at CLX-1 (CL = 2)
-260
10.0ns
A0
1, 2
-360, -10
15.0ns
F0
24
Maximum Data Access Time (t
AC
) from
Clock at CLX-1 (CL = 2)
-260
6.0ns
60
-360, -10
9.0ns
90
1. In a registered DIMM, data is delayed an additional clock cycle due to the on-DIMM pipeline register (that is, Device CL [clock
cycles] + 1 = DIMM CAS latency).
2. Minimum application clock cycle time for the -260 and -360 is 10ns (100MHz), and for -10 is 15ns (66MHz).
3. cc = Checksum Data byte, 00-FF (Hex).
4. “R” = Alphanumeric revision code, A-Z, 0-9.
5. rr = ASCII coded revision code byte “R”.
6. ww = Binary coded decimal week code, 01-53 (Decimal)
01-35 (Hex).
7. yy = Binary coded decimal year code, 00-99 (Decimal)
00-63 (Hex).
8. ss = Serial number data byte, 00-FF (Hex).
Discontinued (8/99 - last order; 12/99 - last ship)
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