L64105 LSI Logic Corporation, L64105 Datasheet - Page 246

• Manufacturer Part Number: L64105
• Description: Mpeg-2 Audio/video Decoder
• Manufacturer: LSI Logic Corporation

8.2 Postparser Operation
8.2.1 Sequence Header
Table 8.1
8-4
Parameter
sequence_header_
code (PscB3)
horizontal_size_value
vertical_size_value
aspect_ratio_
information
frame_rate_code
bit_rate_value
marker_bit
vbv_buffer_size_
value
(Sheet 1 of 2)
Sequence Header Processing
As mentioned, the Postparser separates the bitstream into its individual
bits, fields, and picture blocks and steers them to other modules in the
Video Decoder.
parameters in a sequence, shows their format, and indicates their
disposition by the Postparser.
Table 8.1
parameters present in the Sequence Header.
Video Decoder Module
A[31:0]
B[11:0]
C[11:0]
F[17:0]
D[3:0]
E[3:0]
H[9:0]
G0
shows the actions the decoder takes for each of the
32
12
12
18
10
4
4
1
Table 8.1
uimsbf
uimsbf
uimsbf
uimsbf
uimsbf
uimsbf
bslbf
bslbf
n
y
y
y
y
y
n
y
through
n
n
n
n
n
y
y
y
Table 8.10
F15 F14 F13 F12 F11 F10 F9
C7 C6 C5 C4
H7 H6 H5 H4
B7
F7
0
0
0
0
0
0
B6
F6
0
0
0
0
0
0
B5
F5
list all of the header
0
0
0
0
0
0
B4
F4
0
0
0
0
0
0
C11 C10 C9 C8
B11 B10 B9
B3
C3
D3
E3
H3
F3
0
0
B2
C2
D2
E2
H2
F2
0
0
F17 F16
C1 C0
D1 D0
H9 H8
H1 H0
B1
E1
F1
G0
B8
B0
E0
F8
F0