Ic Data Sheets - Philips LC7.2E Service Manual

Circuit Descriptions, Abbreviation List, and IC Data Sheets

9.12 IC Data Sheets

This section shows the internal block diagrams and pin layouts
of ICs that are drawn as "black boxes" in the electrical diagrams
(with the exception of "memory" and "logic" ICs).
9.12.1 Diagram B03B, Type TDA10046AHT(IC7F01), COFDM Channel Decoder
Block Diagram
VIM
VIP
SACLK
XIN
XOUT
SCL_TUN
SDA_TUN
SCL
SDA
SADDR(1:0)
GPIO(3:0)
MPEG-TS
(parallel)
MPEG-TS
(serial)
Pin Configuration
ANALOG
Dual AGC
A
10
D
C
Fsamp
Carrier Time
Recovery Recovery
PLL
O
S
C
I2C
spare inputs
Interface
ΔΣ
ΔΣ
ΔΣ
ΔΣ
MPEG2
Output Descrambler RS decoder
Interface
CPT_UNCOR
64
AGC_TUN
AGC_IF
SCL_TUN
SDA_TUN
VDDI18
SCL
VSS
SDA
CLR#
SADDR[1]
SADDR[0]
TEST
ENSERI
TRST
VSS
TMS
17
Figure 9-14 Internal block diagram and pin configuration
AGC_TUN AGC_IF
DIGITAL FRONT-END
ΔΣ
AND OFDM
ΔΣ
DEMODULATION
ACI Digital FFT Dynamic
Filtering AGC
2K/8K TimeShift
Coarse
Time
Estimator
DSP CORE
SYNCHRONISATION
Frequency, Time, Frame Recovery
FFT Window positioning
TPS decoding
Outer
Viterbi
Forney
Deinterleaver
Decoder
Deinterleaver
CBER
VBER
CHANNEL DECODER
61 59 57 55 53 51 49
TDA10046
TQFP 64
VSS 0 V
VDD 1.8 V
VDD 3.3 V
19 21 23 25 27 29 32
LC7.2E LA
CHANNEL ESTIMATION
AND CORRECTION
OFDM Spectrum
Partial
CPE
Channel
calculation
Estimation
Time
Interpolation
Frequency
Interpolation
Confidence Channel
Calculation Correction
(I,Q)
Confidence
Inner
Bit
Demapper
Frequency
Deinterleaver
DO[6]
VDDE33
DO[5]
VSS
DO[4]
DO[3]
VDDI18
DO[2]
VSS
DO[1]
DO[0]
OCLK
DEN
PSYNC
VDDE33
UNCOR
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9. EN 95