Sanyo DVD-SL33KR, Service Manual

Page: 9 / 32

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IC BLOCK DIAGRAM & DESCRIPTION
U0101 IMP809SEUR-T(3 PIN POWER SUPPLY)
IMP809
(IMP810)
GND
(RESET) RESET
V
CC
3
1
2
U0103 1MX16Y3VTW-7(DRAM)
BANK0
MEMORY
ARRAY
(2,048 x 256 x 16)
DATA
OUTPUT
REGISTER
DATA
INPUT
REGISTER
SENSE AMPLIFIERS
I/O GATING
DQM MASK LOGIC
COLUMN
DECODER
REFRESH
CONTROLLER
ROW-
ADDRESS
LATCH
ROW-
ADDRESS
LATCH
ROW
DECODER
2,048
BANK1
MEMORY
ARRAY
(2,048 x 256 x 16)
SENSE AMPLIFIERS
I/O GATING
DQM MASK LOGIC
ROW-
ADDRESS
MUX
ROW
DECODER
COLUMN-
ADDRESS LA
TCH
COLUMN-
ADDRESS BUFFER
2,048
256
(x16)
256
(x16)
256
256
REFRESH
COUNTER
CONTROL
LOGIC
ADDRESS
REGISTER
BURST
COUNTER
MODE
REGISTER
COMMAND
DECODE
34 CKE
35 CLK
18
CS#
15 WE#
16 CAS#
17 RAS#
21~24,19
27~32,20
A0-A10,
BA
14,36
DQML,
DQMH
2,3,5,6,
8,9,11,
12,39,40,
42,43,45,
46,48,49
DQ0-
DQ15
U0401 RC4558(AMP)
1
2
3
4
8
7
6
5
1OUT
1IN
-
1IN+
V
CC
-
V
CC
+
2OUT
2IN-
2IN+