L64724 LSI Logic Corporation, L64724 Datasheet - Page 179

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

Figure 7.6
TAP position:
Stage
(Reg) #:
Zero Generate
INPUT
n2(n1 - 1)
n2
Interleaving/Deinterleaving Operation for DSS
k - 1
(n1 - 1)(k - 1)
k - 1
The L64724 Deinterleaver module performs periodic deinterleaving. The
user must specify two parameters: B, the desired interleaving depth, and
M, defined as
The L64724 Deinterleaver for DVB features are as follows:
Figure 7.6
mode.
The L64724 uses a Ramsey Type II Periodic Deinterleaver for DSS
deinterleaving. A (B, N) Periodic Deinterleaver has the following
characteristics:
Deinterleaver Module
Convolutional deinterleaving
Maximum block length of 204 bytes
Deinterleaving depth of 12
1
n2
1
M
0
=
n1 - 1
shows the interleaving/deinterleaving operation for the DSS
N
--- -
B
Ramsey Type II Interleaver/Deinterleaver
1
0
0
Output
.
Channel
TAP position:
Stage
(Reg) #:
Input
OUTPUT
n2(n1 - 1)
n2
k - 1
(n1 - 1)(k - 1)
k - 1
1
n2
1
0
n1-1
1
7-9
0
0