Ic Block Diagrams - Sanyo LCD-32XH8T Service Manual

IC
Block Diagrams
IC001 R2A15120FAP
OUTB1 37
OUTB1
38
VDB1
39
VDB1
40
NC
41
HBB1
42
HBA1
43
NC
44
VDA1
45
VDA1
46
OUTA1
47
OUTA1
48
2. Configuration
All functions required for ISDB-T demodulation and error correction are built into the TC90517.
The input signals to be supported are a low IF (intermediate frequency) signal and direct IF signal.
Baseband IQ signals can also be input.
IC5801 TC90517FGP
The output signal is an MPEG-2 transport stream (TS) in serial format. Note that a TS in parallel format
can be output by setting registers.
ADC
IF input
or IQ input
ADC
Tuner
AGC control output
AGC
SW
control
External AGC input
AGC distortion signal
2 2
Tuner I C I C
control
2
Host I C
Crystal
Clock PLL
(reference clock)
Memory
36 35 34 33 32 31
CONFIDENTIAL
1 2 3 4 5
Quadrature
Interpolation
Filter
detection
phase
AGC
AFC correction
Synchroni
zation
Layer
isolation
Demapping
Frequency
CSI
deinterleaving
processing
Demapping
CSI
Time
processing
deinterleaving
Demapping
CSI
processing
Fig. 2.1 TC90517FG Block Diagram
30 29 28 27 26 25
TC90517FG Toshiba products specification [Tentative]
6 7 8 9 10 11 12
ISI
C
Frequency
(unguarded
FFT
preecho/postecho
CPE
suppression)
CVI
FFT window
Control
(CW interference
control
detection)
TMCC
demodulation
Energy
Viterbi
despreading
decoding
Energy
despreading
Energy
despreading
-8-
24
OUTB2
23
OUTB2
22
VDB2
21
VDB2
20 NC
19
HBB2
18
HBA2
17 NC
16 VDA2
15 VDA2
14 OUTA2
13 OUTA2
Adaptive
Pilot
interpolation
extraction
filter
CSI
Equalization
(reliability
detection)
RS Synchroni-
Error
zation flag
decoding detection
Output
TS output
control