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參數(shù)資料
| 型號： | M65676FP |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | DIGITAL NTSC/PAL ENCODER |
| 中文描述： | 數(shù)字的NTSC / PAL編碼器 |
| 文件頁數(shù)： | 7/17頁 |
| 文件大?。?/td> | 83K |
| 代理商： | M65676FP |
MITSUBISHI ICs (TV)
M65675FP/M65676FP
DIGITAL NTSC/PAL ENCODER
7
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
CGMS (IEC 1880) Encoding
In the NTSC (525/60) mode, the 20-bit data, consisting of 14-bit
data including CRCC code and 6-bit error correction code
generated by the input data, are converted into the video format
shown in fig. 2 and then inserted in TV line 20/283, according to the
register data of CGMS control mode (CGMS on/off).
The transferred data are loaded to the register on the trailing edge
of V-sync, after a write-enable (WE) was set to "1".
Color
Burst
Ref Bit
21(284) line
11.2
±
0.3
μ
s
20(283) line
19(282) line
49.1
±
0.3
μ
s
63.556
μ
s
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
2.232
±
50
μ
s
CRCC
Input Data
b
b
b
Fig. 2 CGMS WAVEFORM
7
±
1
WSS (ETS 300 294) Encoding
In the PAL (625/50) mode, 14-bit data, set in the register, is
modulated to the signal format shown in fig. 3 and then will be
inserted into TV line 23, according to the register data of WSS
control mode (WSS on/off).
The new register data are loaded on the trailing edge of V-sync,
after a write-enable (WE) was set to "1".
24line
23 line
22 line
5
±
5
Run in
Start code
1E3C1F
1F1C71C7
group1
Aspect
Ratio
(4bit)
group2
Enhanced
Services
(4bit)
group3
Subtit-
les
(3bit)
group4
Others
(3bit)
200
±
10ns
"0"
200
±
10ns
"1"
Input Data
Color
Burst
11.0
±
0.25
μ
s
27.4
±
1.4
μ
s
64.0
μ
s
Fig. 3 WSS WAVEFORM
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