JBL MS-8, Руководство по обслуживанию

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PDF: 09005aef811ce1fe/Source: 09005aef811ce1d5 Micron Technology, Inc., reserves the right to change products or specifications without notice.
64MSDRAMx32_2.fm - Rev. J 12/08 EN
6
©2001 Micron Technology, Inc. All rights reserved.
64Mb: x32 SDRAM
Functional Block Diagram
Functional Block Diagram
Figure 1: 2 Meg x 32 SDRAM
11
RAS#
CAS#
CLK
CS#
WE#
CKE
8
A0–A10,
BA0, BA1
DQM0–
DQM3
13
256
(x32)
8192
I/O GATING
DQM MASK LOGIC
READ DATA LATCH
WRITE DRIVERS
COLUMN
DECODER
BANK0
MEMORY
ARRAY
(2,048 x 256 x 32)
BANK 0
ROW-
ADDRESS
LATCH
&
DECODER
2048
SENSE AMPLIFIERS
BANK
CONTROL
LOGIC
DQ0–
DQ31
32
32
DATA
INPUT
REGISTER
DATA
OUTPUT
REGISTER
32
BANK 1
BANK 0
BANK 2
BANK 3
11
8
2
4 4
2
REFRESH
COUNTER
11
11
MODE REGISTER
CONTROL
LOGIC
COMMAND
DECODE
ROW-
ADDRESS
MUX
ADDRESS
REGISTER
COLUMN-
ADDRESS
COUNTER/
LATCH
MS-8
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