Onkyo TX-SR804 Service Manual page 126

IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS -32
Q8003: IC42S32200L (64-Mbit Synchronous Dynamic RAM)
BLOCK DIAGRAM
CLK
C L O C K
B U F F E R
C K E
C S #
R A S #
COMMAND
C A S #
D E C O D E R
W E #
COLUMN
C O U N T E R
A 1 0 / A P
A D D R E S S
A 0
B U F F E R
A 9
B S 0
B S 1
R E F R E S H
C O U N T E R
D Q 0
D Q 31
C O N T R O L
S I G N A L
G E N E R AT O R
M O D E
R E G I S T E R
D Q
B U F F E R
D Q M 0 ~ 3
C o l u m n D e c o d e r
2 0 4 8 X 2 5 6 X 3 2
C E L L A R R AY
( B A N K # 0 )
Sense Amplifier
Sense Amplifier
2 0 4 8 X 2 5 6 X 3 2
C E L L A R R AY
( B A N K # 1 )
C o l u m n D e c o d e r
C o l u m n D e c o d e r
2048 X 256 X 32
CELL ARRAY
(BANK #2)
Sense Amplifier
Sense Amplifier
2048 X 256 X 32
CELL ARRAY
(BANK #3)
C o l u m n D e c o d e r
TX-SR804/804E