L64704 LSI Logic Corporation, L64704 Datasheet - Page 139
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 6.6
Minimum and Maximum
Number of States in the
Acquisition Phase
Qa
MC
= 0
Acquisition Phase (Maximum Number of States)
Acquisition Phase (Minimum Number of States)
Pa
Qa
Qa
From Tracking Phase
MC
= 0
Synchronization State: SSA = 00
Synchronization State: SSA = 11
MC
= 1
You can configure some of the parameters in the state diagram for the
acquisition and tracking phase. You can set the SSA parameter (Group 4,
APR 11) to allow for three, four, five, or six sync words before the
decoder declares itself to be in synchronization. You can also set the
SST parameter (Group 4, APR 11) to allow for two, three, four, or five
misdetected sync words before the decoder declares a loss of synchro-
nization.
number of states that you can select for acquisition and tracking modes.
Reed-Solomon Deinterleaver Synchronization
Pa
Pa
Qa
From Tracking Phase
Qa
MC
= 1
Figure 6.6
MC
= 2
Pa
Qa
Qa
Pa
and
MC
= 2
MC
= 3
Figure 6.7
Pa
Qa
Pa
MSC = 0
MC = 3
Pt
MC
= 4
show the minimum and maximum
Qa
Pa
MC
= 5
Pa
MSC = 0
MC = 6
Pt
6-7
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