Philips Magnavox 19MD358B Service Manual page 61

Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.4.4 Diagram B4A,NT5DS16M16CS-5T
CKE
CK
CK
CS
WE
CAS
RAS
Mode
Registers
15
A0-A12,
15
BA0, BA1
Note: This Functional Block Diagram is intended to facilitate user understanding of the operation of
the device; it does not represent an actual circuit implementation.
Note: DM is a unidirectional signal (input only), but is internally loaded to match the load of the bidi-
rectional DQ and DQS signals.
13
8192
13
2
DM Mask Logic
2
10
Column-Address
11
Counter/Latch
1
Figure 9-7 Internal Block Diagram (64Mb x 4)
Bank3
Bank2
Bank1
Bank0
Memory
Array
(8192 x 1024 x 8)
4
8
Sense Amplifiers
4
I/O Gating
8
Write
FIFO
&
8
1024
Drivers
(x8)
clk clk
Column
out
Decoder
CK,
CK
COL0
TPM1.1U LA
CK, CK
DLL
Data
4
1
DQS
Generator
COL0 DQS
Input
Register
Mask 1 1
1
1 1
2
4 4
8
4
4 4
in
Data
COL0
1
9. EN 61
DQ0-DQ3,
DM
DQS
I_17550_020.eps
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