L64724 LSI Logic Corporation, L64724 Datasheet - Page 215

• Manufacturer Part Number: L64724
• Description: Satellite Receiver
• Manufacturer: LSI Logic Corporation

B.1 L64724 QPSK Demodulator Acquisition and Debugging Tips
Appendix B
L64724 Application
Notes
This appendix provides updated information on the use of the LSI Logic
L64724 Satellite Receiver in a typical application. It contains the following
sections:
Also, refer to the L64724 Satellite Receiver Evaluation Board User’s
Guide, which gives a good description of board related issues and
demodulator and FEC programming guidelines.
This section presents a debugging procedure to follow in case the
L64724 QPSK demodulator fails to lock.
L64724 Satellite Receiver
Section B.1, “L64724 QPSK Demodulator Acquisition and Debugging
Tips,”
Clock Synchronization, and Carrier Synchronization loops.
Section B.2, “Demodulator Configuration Tips,”
selecting crucial parameters such as Sampling frequency,
Decimation filter configuration, and Loop Bandwidths.
Section B.3, “QPSK Demodulator and FEC Configuration Example:
High Data Rates,”
FEC portion of the L64724 can be programmed for high data rates.
Section B.4, “QPSK Demodulator and FEC Configuration Example:
Low Data Rates,”
FEC portion of the L64724 can be programmed for low data rates
where the oversampling ratio is greater than four.
describes how to program and monitor the L64724’s AGC,
shows an example of how the demodulator and
shows an example of how the demodulator and
gives useful hints on
B-1