L64724 LSI Logic Corporation, L64724 Datasheet - Page 167

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

Figure 6.13 Minimum and Maximum Number of States in the
From
Acquisition
Phase
The data structure for DSS systems is shown in
packet consists of 146 bytes, including 130 data bytes and 16
redundancy bytes. A synchronization byte precedes every Reed-
Solomon block, but is added after the Reed-Solomon encoding and
interleaving operations have been performed. The sync byte is removed
in the bit stream monitor and is not supplied to the Deinterleaver and
Reed-Solomon Decoder modules.
Reed-Solomon Deinterleaver Synchronization
From
Acquisition
Phase
Pa
Pa
Reacquire
Tracking Phase (minimum number of states)
Tracking Phase
Tracking Phase (maximum number of states)
Synchronization State (SST = 0b00)
Synchronization State (SST = 0b11)
Pt
MSC = 0
MSC = 0
Pt
Pt
Pt
Qt
Qt
Qt
MSC
MSC
= 1
= 1
Loss
of Sync
Pt
Qt
MSC
= 2
Pt
Qt
Reacquire
Figure
MSC
= 3
6.14. A DSS
Qt
Pt
Qt
MSC
= 4
6-11