L64704 LSI Logic Corporation, L64704 Datasheet - Page 21
L64704
Manufacturer Part Number
L64704
Description
Satellite Decoder Technical Manual 5/97
Manufacturer
LSI Logic Corporation
Datasheet
1.L64704.pdf
(220 pages)
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1.3
Features
Summary
This section summarizes the main features of the L64704. Subsequent
chapters describe these features in more detail.
Figure 1.4
Features Summary
Variable BPSK/QPSK demodulation from 2 to 62.5 Mbit/s
Matched filter (square root raised cosine filter, roll-off factor of 35%)
Decimation filters for input oversampling ratios of 2/T, 3/T, and 4/T
Clock synchronization
Carrier synchronization featuring a frequency sweep capability for
signal acquisition
Power estimation for AGC control
Internal DC offset control
Programmable Viterbi decoder module for rates 1/2, 2/3, 3/4, 5/6, 7/8
(204/188) Reed-Solomon decoder
Auto synchronization for Viterbi decoder
Programmable synchronization for Deinterleaver, Reed-Solomon
Decoder, and Descrambler
FEC module flags uncorrectable frames by setting the ninth bit of the
MPEG Transport packet.
Bit Error monitoring for channel performance measurements
Depth 12 deinterleaver
Serial host interface compatible with the LSI Logic Serial Control bus
interface
Power down mode
shows a performance graph for the L64704 Satellite Decoder.
1-5
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