L64704 LSI Logic Corporation, L64704 Datasheet - Page 143
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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Figure 6.11
Synchronization,
Tracking, and Loss
of Synchronization
in the Descrambler
forces the third stage to reacquire, the tracking phase for the third
synchronization stage is simpler.
outlines how the decoder determines synchronization, tracking, and loss
of synchronization for the third stage.
Note that in this stage, any noninverting corrupted sync bytes found in
the tracking phase are duly replaced by the original predefined noninvert-
ing sync byte.
Descrambler Synchronization
Pa: State Transition, Inverting Sync Word Detected (8N, M, K)
Qa: State Transition, Inverting Sync Word Misdetected
Qa
MC
Acquisition Phase
= 0
Pa
Qa
MC
= 1
Pa
Tracking Phase
MC = 2
Reacquire synchronization
if Stage 2 lost synchronization
Figure 6.11
shows a state diagram that
6-11
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