STV5342 데이터 시트보기 (PDF) - STMicroelectronics
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STV5342 Datasheet PDF : 20 Pages
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STV5342
Figure 3 : Synchronization Timing
F1
0
TCS
continuous internal 1MHz clock
64
4.67
SAND
1.5
8.5
All timings in µs
Phase lock
Phase lock off
33.5
Figure 4 : Composite Sync. Waveforms
LSP
0 4.66
EP
0 2.33
BP
0
32 34.33
27.33 32
64
64
59.33 64
All timings in µs
TCS
(interlaced)
621 622 623 624 625
1
2
(308) (309) (310) (311) (312)
3
4
5
6
TCS
(interlaced)
309 310 311 312 313 314
(1)
315 316 317 318 319
(2)
(3)
(4)
(5) (6)
TCS
(non-interlaced)
308 309 310 311 312
1
2
3
4
5
6
The number positions indicate the end of lines.
The Teletext composite synchronization signal (TCS), whether interlacing is present or not, comprise
three components.
a) the line-synchronization pulses (LSP).
b) the equalization pulses (EP)
c) the frame-synchronization pulses (BP).
The timing reference is specified by the descending edge of the signal LSP, with a tolerance spread of ± 100ns.
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