参数资料
型号: L64733C-48
厂商: LSI CORP
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP48
封装: TQFP-48
文件页数: 12/52页
文件大小: 552K
代理商: L64733C-48
2
L64733C/L64734 Tuner and Satellite Receiver Chipset
L64733C and generates dual automatic gain control (AGC) voltages for
the two-stage automatic gain control on the L64733C. A simplied
chipset block diagram is shown in Figure 2.
Figure 2
L64733C/734 Simplied Block Diagram
Figure 3 shows a more detailed chipset block diagram.
The L64733C accepts the RF In L-Band signal input from the satellite
low noise block (LNB) feed. The L64733C handles a fully loaded raster
of transponder signals from 925 MHz to 2175 MHz. RF In is internally
matched to 75
; it requires no matching network between the cable
connector and the L64733C input pins, except for a DC-blocking
capacitor. The L64733C uses the L64734 INSEL signal to select the
appropriate RF function (Normal or Loop-Through Mode).
RF
RF Input
RF Output
Select
IOUT QOUT
Dual ADC
Demodulator
Error
Correction
Descrambler
Microcontroller
Interface
Microcontroller
Host
Control
Modules for
MPEG Output
L64733C
L64734
Control Signals
Mixer,
Down
Conversion
Baseband
Filter
Synthesizer
and Filter
Switch
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