L64724 LSI Logic Corporation, L64724 Datasheet - Page 159

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

Figure 6.2
Decoder Data
Bit Count
Q-Channel
I-Channel
Viterbi Decoder Synchronization
The decoder then proceeds to adjust either the phase in the phase
rotation module or the data stream alignment in the depuncturing logic.
The 180 degree rotation is removed in the Reed-Solomon decoder
synchronization stage (see
Synchronization,” page
during phase rotation.
Viterbi Decoder Synchronization
(VMDC1 & 2)
Max Data
Rotation
Bit Count
Phase
Decision Logic
Rotate
Phase
In-Sync/Out-of-Sync
Max Bit Error
(VMBEC)
Count
Sync
6-8.)
Section 6.3, “Reed-Solomon Deinterleaver
Depuncturing
Figure 6.3
Logic
Group 4, APR 4–13 Registers
Bit Error
outlines the operations performed
Count
Decoder
Decoded Data
Viterbi
6-3