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參數(shù)資料
型號: TMC2491AR2C
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 顏色信號轉(zhuǎn)換
英文描述: COLOR SIGNAL ENCODER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 5/36頁
文件大?。?/td> 208K
代理商: TMC2491AR2C
PRODUCT SPECIFICATION
TMC2490A/TMC2491A
13
Table 3. Horizontal Timing Standards and Actual Values for 60 fps Video Standards (
s)
Table 4. Horizontal Timing Standards and Actual Values for 50 fps Video Standards (
s)
Parameter
NTSC (SMPTE 170M)
PAL-M (CCIR 624)
Min
Nom
Max
Min
Nom
Max
TMC2490(1)A
Front porch
FP
1.4
1.5
1.6
1.27
2.22
1.53
Horiz. Sync
SY
4.6
4.7
4.8
4.6
4.7
4.8
4.74
Breezeway
BR
0.608
0.9
1.1
1.3
0.59 (NTSC)
1.04 (PAL-M)
Color Burst
BU
2.235
2.514
2.794
2.237
2.517
2.797
2.31
Color Back porch
CBP
1.378
0.503
2.363
1.65 (NTSC)
0.89 (PAL-M)
Blanking
BL
10.5
10.7
11.0
10.7
10.9
11.1
10.8
Active Video
VA
52.56
52.86
53.06
52.46
52.66
52.86
52.633
Line Time
H
63.556
63.557
Equalization HIGH
EH
29.5
29.47
Equalization LOW
EL
2.3
2.31
Sync HIGH
SH
4.7
4.67
Sync LOW
SL
27.1
27.13
Sync rise and fall
times
140
±20ns
<250 ns
135ns
Parameter
PAL-B,G,H,I (CCIR 624)
PAL-N (CCIR 624)
Min
Nom
Max
Min
Nom
Max
TMC2490(1)A
Front porch
FP
1.2
1.5
1.8
1.2
1.5
1.8
1.57
Horiz. Sync
SY
4.5
4.7
4.9
4.5
4.7
4.9
4.74
Breezeway
BR
0.6
0.9
1.2
0.6
0.9
1.2
0.89
Color Burst
BU
2.030
2.255
2.481
2.233
2.513
2.792
2.3
Color Back porch
CBP
2.654
2.387
2.3
Blanking
BL
11.7
12.0
12.3
11.7
12.0
12.3
1.8
Active Video
VA
51.7
52.0
52.3
51.7
52.0
52.3
52.2
Line Time
H
64
64.0
Equalization HIGH
EH
29.65
29.63
Equalization LOW
EL
2.35
2.37
Sync HIGH
SH
4.7
4.67
Sync LOW
SL
27.3
Sync rise and fall
times
250
±50
ns
200
±100
ns
250
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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