L64733 LSI Logic Corporation, L64733 Datasheet - Page 2

• Manufacturer Part Number: L64733
• Description: Tuner/receiver Chipset
• Manufacturer: LSI Logic Corporation

2
Figure 2
The L64734:
The L64733 Tuner IC directly down-converts the satellite signal from
L-band to baseband.
L64733/L64734 Tuner and Satellite Receiver Chipset
Microcontroller
RF Output
generates control signals for the L64733 synthesizer, using
frequency information programmed into the L64734 configuration
registers
controls the programming of the low-pass filters on the L64733
generates dual AGC control voltages for the two-stage automatic
gain control on the L64733 IC.
RF Input
Host
Select
L64733/34 Simplified Block Diagram
Control Signals
Switch
RF
Microcontroller
Modules for
Synthesizer
Synthesizer,
and Filter
Interface
Converter
Control
Down-
Mixer,
IOUT
MPEG Output
Demodulator
Descrambler
Correction
Dual ADC
Baseband
QOUT
Filter
Error
L64734
L64733