
L64005 MPEG-2 Audio/Video Decoder Technical Manual
6-15
Final Rev F
Copyright 1996 by LSI Logic Corporation. All rights reserved.
the corresponding values to program in the Group 7 control registers at
27 MHz.
1. Derived from CCIR 601 specication Figure 1, Hsync 0H to start of active video = 122T for
525 line systems, where T=13.5MHz clock period
2. For a digital active line of 720 pixels
3. With horizontal interpolation lter disabled
Table 6.7
Horizontal and Vertical
Timing of NTSC TV
Systems
Parameter
NTSC-M
Programmed Value
Register
Group
Index
Bits
Specication Time
and Tolerance
Actual
Time
Binary
Value
Horizontal Sync Width
7:13
[7:0]
4.70
± 0.1 s
4.704
s
0111 11102
Equalization Pulse Width 7:14
[7:0]
2.30
± 0.1 s
2.296
s
0011 11012
Serration Pulse Width
7:19
7:15
[1:0]
[7:0]
27.1
s (nominal)
27.111
s
10 1101 10112
Horizontal Blank Pulse
Width
7:19
7:16
[2]
[7:0]
--
9.037
s1
0 1110 11112
Active Image Done
7:19
7:17
[4:3]
[7:0]
--
30.593
s
11 0011 01012
Active Image Width
--
53.333
s2
53.333
s--
Half Line Time
7:19
7:18
[6:5]
[7:0]
31.778
s
31.778
s
11 0101 10012
Pre-Equalization Lines
7:20
[7:5]
3 full lines
6 half lines
1102
Post-Equalization Lines
7:21
[7:5]
3 full lines
6 half lines
1102
Pre-Blank Lines
7:20
[4:0]
--
16 lines
1 00002
VBI Lines
6:22
[4:0]
--
1 line
0 00012
Post-Blank Lines
7:21
[4:0]
--
5 lines
0 01002
Serration Lines
7:22
[7:5]
3 full lines
6 half lines
1102
Main Lines
7:24
7:22
[7]
[4:0]
--
240/eld
0 1 11102
Scan Half Lines
7:25
7:23
[7]
[7:0]
--
507/eld
0 1111 11012
Main Reads per Line
7:24
[6:0]
--
90 /line3
101 10102