DAEWOO ELECTRONICS DV 115, Service Manual

Page: 24 / 63

8. Internal Block Diagram of ICs
DV-115/125
Volume Control Interpolation Filter DAC Analog Filter
Control Port
Volume Control Interpolation Filter Analog Filter
Se
ri
al
P
o
rt
SCL/CCLK MUTEC AD0/CS
AOUTA
AOUTB
RST
LRCK
SDATA
MCLK
SDA/CDIN
DAC
External
Mute Control
SCLK
Mixer
2
CS434
15 2
14 3
13 4
16 1
11 6
10 7
9 8
12 5
Reset RST MUTEC Mute Control
Serial Data SDATA AOUTA Analog Output A
Serial Clock SCLK VA Analog Power
ft/Right Clock LRCK AGND Analog Ground
Master Clock MCLK AOUTB Analog Output B
SCL/CCLK SCL/CCLK REF_GND Reference Ground
SDA/CDIN SDA/CDIN VQ Quiescent Voltage
AD0/CS AD0/CS FILT+ Positive Voltage Reference
CS4955
CLK
ISET
DGND
SCL
SDA
PDAT[7:0]
RD
WR
ADDR
XTAL_OUT
VD[7:0]
HSYNC
VSYNC
FIELD
INT
RESET
I
2
C Interface
Host
Parallel
Interface
Color Sub-carrier Synthesizer
8
Video Formatter
Control
Registers
Chroma Modulate
Chroma Amplifier
Output
Interpolate
LPF
Burst Insert
Chroma Interpolate
LPF
Luma Interpolate
Luma Amplifier
Sync Insert
U,V
Y
Video Timing
Generator
TEST
Current
Reference
Voltage
Reference
VREF
R
DAC
Y
DAC
CVBS
DAC
C
10-Bit
DAC
VAA
XTAL_IN
Teletext
Encoder
TTXRQ
TTXDAT
YCbCr to RBG
B
DAC
G
DAC
10-Bit
10-Bit
10-Bit
10-Bit
10-Bit
RGB
RGB
Y
Y
8
Color Space
Converter
B
CVBS
GNDA
VAA
C
Y
V0
V1
V2
V3
V4
V5
V6
V7
FIELD /CB
HSYNC/CB
VSYNC
INT
TEST
XTAL_OUT
XTAL_IN
PADR
VDD
GNDD
GNDA
VAA
G
R
VREF
ISET
VAA
GNDA
RESET
SCL
SDA
TTXRQ
TTXDAT
CLKIN
WR
RD
PDAT0
PDAT1
PDAT2
PDAT3
PDAT4
PDAT5
PDAT6
PDAT7
CS4954-CQ
CS4955-CQ
48-Pin TQFP
Top View
48 47 46 45 44 43 41 42 40 39 38 37
13 14 15 16 17 18 20 19 21 22 23 24
36
35
34
33
32
31
30
29
28
27
26
25
1
2
3
4
5
6
7
8
9
10
11
12
ES56033
24