Akai DVR4200SS, Service Manual

Page: 40 / 51

76 75
Bank Select
Timing Register
CLK CKE
CS
RAS
CAS WE L(U)DQM
Programming Register
Latency & Burst Length
Column Decoder
C
o
l.
B
u
ffe
r
R
o
w
D
e
c
o
d
e
r
512K x 16
512K x 16
S
e
n
s
e
A
M
P
Data Input Register
O
u
tp
u
t B
u
ffe
r
I/O
C
o
n
tr
o
l
LWE
LDQM
DQi
R
o
w
B
u
ffe
r
R
e
fre
s
h
C
o
u
n
te
r
A
d
d
re
s
s
R
e
g
is
te
r
L
R
A
S
L
C
B
R
LCKE
LCAS
LWCBR
LDQM
LRAS LCBR LWE
CLK
ADD
U3, U4 W981616BH-7
IC605 PT2322
6-CHANNEL
VOLUME CONTROL
&
MUTE
T
O
N
E
C
O
N
T
R
O
L
T
O
N
E
C
O
N
T
R
O
L
6-CHANNEL OUTPUT
VOLUME TRIM
3D 3D
TONE
DEFEAT
TONE
DEFEAT
TONE
CONTROL
ON
TONE
CONTROL
ON
3 12
2 13
1 14
28 15
27
26
25
16
CTRE_FR
RCMID1_FR
RCMID2_FR
RCBAS1_FR
RCBAS2_FR
CTRE_FL
RCMID1_FL
RCMID2_FL
RCBAS1_FL
RCBAS2_FL
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
O
U
T
_
F
L
O
U
T
_
S
L
O
U
T
_
C
T
O
U
T
_
S
U
B
O
U
T
_
S
R
O
U
T
_
F
R
S
C
L
V
C
C
FL
SL CT
SUB SR FR
IN
_
F
L
IN
_
S
L
IN
_
C
T
G
N
D
V
R
E
F
IN
_
S
U
B
IN
_
S
R
IN
_
F
R
I C
CONTROL
UNIT
2
GND
SDA
1
1
1
0
9 8 7 6 5 4
U17, U18 LD1117S33C
U19 LD1117S
Thermal
Limit
+
-
+
Current
Limit
GND (FIXED OUTPUT)
ADJ. (ADJUSTABLE OUTPUT)
V
IN
V
OUT
Substrate
U11, U12, U13 NJM4580E/LS4580F
1
2
3
4
7
6
5
8 V +
B
B
B
B +IN
+IN
OUT
OUT
-IN
-IN
A
A
A
A
V -
1OUT
1IN-
1IN+
V /GND
CC-
V
2OUT
2IN-
2IN+
CC+
1
2
3
4
8
7
6
5
U1 TL3472CD/R
AUDIO
INTERFACE
& DIGITAL FILTERS
STEREO
DAC
STEREO
DAC STEREO
DAC
STEREO
DAC
LOW
PASS
FILTER
LOW
PASS
FILTER
LOW
PASS
FILTER
CONTROL INTERFACE
-
+
VOUT1L
VOUT1R
VOUT2L
VOUT2R
VOUT3L
VOUT3R
V
R
E
F
N
V
M
ID
V
R
E
F
P
R
E
F
A
D
C
D
O
U
T
B
C
L
K
L
R
C
D
IN
1
D
IN
2
D
IN
3
M
C
L
K
A
V
D
D
A
G
N
D
AINL
AINR
D
V
D
D
D
G
N
D
M
U
T
E
M
O
D
E
M
L
/I
2
S
M
C
/I
W
L
M
D
/D
M
VREFN VREFP
VREFN
U10 WM8772EDS
W
1
W
1
X
0
X
0
X
1
X
1
X
X
Y
Y
Y
0
Y
0
V
EE
V
EE
W
0
W
0
W
W
Z
Z
Z
1
Z
1
Z
0
Z
0
Y
1
Y
1
CONTROL
CONTROL
1
16
15
14
13
12
11
10
9
2
3
4
5
6
7
8
Vss
V
DD
IC501 BU4551BF