參數(shù)資料
型號: TMC2491A
廠商: Fairchild Semiconductor Corporation
英文描述: Multistandard Digital Video Encoder(多標準數(shù)字視頻編碼器)
中文描述: 多標準數(shù)字視頻編碼器(多標準數(shù)字視頻編碼器)
文件頁數(shù): 13/36頁
文件大?。?/td> 208K
代理商: TMC2491A
PRODUCT SPECIFICATION
TMC2490A/TMC2491A
13
Table 3. Horizontal Timing Standards and Actual Values for 60 fps Video Standards (
μ
s)
Table 4. Horizontal Timing Standards and Actual Values for 50 fps Video Standards (
μ
s)
PAL-B,G,H,I (CCIR 624)
Min
Nom
Front porch
FP
1.2
1.5
Horiz. Sync
SY
4.5
4.7
Breezeway
BR
0.6
0.9
Color Burst
BU
2.030
2.255
Color Back porch
CBP
2.654
Blanking
BL
11.7
12.0
Active Video
VA
51.7
52.0
Line Time
H
64
Equalization HIGH
EH
29.65
Equalization LOW
EL
2.35
Sync HIGH
SH
4.7
Sync LOW
SL
27.3
Sync rise and fall
times
ns
Parameter
Front porch
Horiz. Sync
Breezeway
NTSC (SMPTE 170M)
Min
Nom
1.4
1.5
4.6
4.7
0.608
PAL-M (CCIR 624)
Min
Nom
1.27
4.6
0.9
Max
1.6
4.8
Max
2.22
4.8
1.3
TMC2490(1)A
1.53
4.74
0.59 (NTSC)
1.04 (PAL-M)
2.31
1.65 (NTSC)
0.89 (PAL-M)
10.8
52.633
63.557
29.47
2.31
4.67
27.13
135ns
FP
SY
BR
4.7
1.1
Color Burst
Color Back porch
BU
CBP
2.235
2.514
1.378
2.794
2.237
0.503
2.517
2.797
2.363
Blanking
Active Video
Line Time
Equalization HIGH
Equalization LOW
Sync HIGH
Sync LOW
Sync rise and fall
times
BL
VA
H
EH
EL
SH
SL
10.5
52.56
10.7
52.86
63.556
29.5
2.3
4.7
27.1
140
±
20ns
11.0
53.06
10.7
52.46
10.9
52.66
63.556
29.5
2.3
4.7
27.1
<250 ns
11.1
52.86
Parameter
PAL-N (CCIR 624)
Nom
1.5
4.7
0.9
2.233
2.513
2.387
11.7
51.7
Max
1.8
4.9
1.2
2.481
Min
1.2
4.5
0.6
Max
1.8
4.9
1.2
2.792
TMC2490(1)A
1.57
4.74
0.89
2.3
2.3
1.8
52.2
64.0
29.63
2.37
4.67
27.3
250
12.3
52.3
12.0
52.0
64
29.65
2.35
4.7
27.3
200
±
100
ns
12.3
52.3
250
±
50
slopes compatible with SMPTE 170M NTSC or CCIR
Report 624 PAL on all vital edges:
1.
Sync leading and trailing edges.
2.
Burst envelope.
3.
Active video leading and trailing edges.
4.
All vertical interval equalization pulse and sync edges.
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