Read Sony HT-K250 / SA-WMSP250 Service Manual online
17
SA-WMSP250
2-11. IC BLOCK DIAGRAMS
— DIGITAL AMP Board —
IC305, 308, 318 CXD9743N
S
P
Rate Converter
DF1
DF2
Gain
Control
Serial Control
Liner Interpolator
(*2times)
∆ ∑ Converter
VDDL
PWM
INIT/MUTE
Clock Generator
Clock Generator
1
OUTL1
2
VSSL
3
OUTL2
4
XOVDD
5
XFSOOUT
6
XOVSS
7
DVDD
8
DVSS
9
MCKSEL
10
SCDT
11
SCSHIFT
12
SCLA
TCH
13
NSPMUTE
14
INIT
15
LRCK
16
BCK
17
D
ATA
18
BFVDD
19
BFVSS
20
XFSIIN
21
VDDR
42
OUTR1
41
VSSR
40
OUTR2
39
VSUBC
38
XVDD
37
XFSOIN
36
XVSS
35
HPVDDL
34
HPOUTL1
33
HPVSSL
32
HPOUTL2
31
HPVDDR
30
HPOUTR1
29
HPVSSR
28
HPOUTR2
27
TEST1
26
TEST2
25
SFLAG
24
FSOI
23
FSOCKO
22
IC301, 304, 306, 307, 309, 311
CXD9750L
Crossover
Delay
Low Side
Level Shift
Pre Driver
High Side
Level Shift
Filter
TSD
UVLO
Q
S
R
R
S
R
Q
Pre Driver
2
VBOOTA
9
OUTA
1
VBBA
3
VDRVA
10
SA
5
GNDA
7
ENA
4
VDDA
8
DIAGA
6
INA
14
11
12
19
13
15
17
18
16
20
VBOOTB
OUTB
VBBB
VDRVB
SB
GNDB
ENB
VDDB
DIAGB
INB
Same as above
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