參數(shù)資料
型號(hào): L64734
廠商: LSI CORP
元件分類: 消費(fèi)家電
英文描述: Tuner and Satellite Receiver Chipset
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP100
封裝: PLASTIC, QFP-100
文件頁(yè)數(shù): 3/48頁(yè)
文件大?。?/td> 478K
代理商: L64734
L64733/L64734 Tuner and Satellite Receiver Chipset
3
Figure 3
shows a more detailed chipset block diagram.
Figure 3
Detailed Chipset Block Diagram
Filter
Matched
Filter
Carrier
Loop Control
AGC
Control
Timing Loop
Control
Output
Control
DEMI
DEMQ
1/T
Descrambler
Dual
ADC
Interpolator/Decimation
External Microcontroller Interface
Clk
(from L64734
on-chip PLL)
Xtal
Osc
Phase
Detect.
RF In
RF Out
RF
Charge
Pump
Fc
90
°
VCO
X2
Dual-
Modulus
Prescaler
Tank
Circuit
P
F
M
P
C
A
I
I
Q
F
Synthesizer Control Module
L64734
L64733
Filter
Control
Module
Amp
To External
Loop Filter
÷
by 8
Quadrature
Down-Converter
2
2
2
2
A
4–7.26 MHz
BPSK/QPSK
Demodulator
Microcontroller Data and Address Bus
Microcontroller Data and Address Bus
FEC Decoder Pipeline
Channel
Output
(MPEG-2
Transport
Stream)
Reed-
Solomon
Decoder
Convolutional
Deinterleaver
Reed-
Solomon
Synchronizer
Viterbi
Synchronizer
Viterbi
Decoder
Switch
2
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