L64733C LSI Logic Corporation, L64733C Datasheet - Page 3

• Manufacturer Part Number: L64733C
• Description: Tuner And Satellite Receiver Chipset Data Sheet 2/01
• Manufacturer: LSI Logic Corporation

Figure 3
(MPEG-2
Transport
4–7.26 MHz
Channel
Stream)
LOBUF
RF Out
LODIV
Output
Circuit
RF In
Tank
L64733C
L64734
(from L64734
on-chip PLL)
Detailed Chipset Block Diagram
VCO
Xtal
Osc
Descrambler
Dual
ADC
Clk
Switch
L64733C/L64734 Tuner and Satellite Receiver Chipset
X2
RF
by 8
Microcontroller Data and Address Bus
Synthesizer Control Module
FEC Decoder Pipeline
Amp
Detect.
Phase
Solomon
Decoder
Demodulator
BPSK/QPSK
Reed-
Microcontroller Data and Address Bus
Interpolator/Decimation
32/33
1/2
or
Charge
Pump
Filter
Convolutional
Down-Converter
Deinterleaver
Quadrature
90
External Microcontroller Interface
To external
Loop Filter
Loop Control
Timing Loop
Control
Control
Carrier
AGC
Synchronizer
Solomon
Matched
Reed-
Filter
Synchronizer
Control
Output
Decoder
Module
Control
Viterbi
Viterbi
Filter
I
1/T
Q
Fc
3