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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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STV0118 Scheda tecnica(PDF) 40 Page - STMicroelectronics |
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STV0118 Scheda tecnica(HTML) 40 Page - STMicroelectronics |
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40 / 42 page  VI.2 - Register Contents and Description (continued) (*) = DEFAULT mode when NRESET pin is active (LOW level) VI - REGISTERS (continued) REGISTER_44 - cclif2 : Closed caption/extended data line insertion for field 2 TV line number where closed caption/extended data is to be encoded in field 2 is programmable through the following register : MSB LSB register_44 xxxx xxxx xxxx I2_4 I2_3 I2_2 I2_1 I2_0 Default 00001 1 1 1 - 525/60 system : (525-SMPTE line number convention) Only lines 273 through 284 should be used for closed caption or extended data services (preceding lines contain the vertical sync pulses with equalizing pulses), although it is possible to program over a wider range. l2[4:0] = 00000 no line selected for closed caption encoding l2[4:0] = 000xx do not use these codes l2[4:0] = i line (269 +i) (SMPTE) selected for encoding ... l2[4:0] = 01111 line 284 (SMPTE) selected for encoding l2[4:0] = 11111 line 300 (SMPTE) Note : if cgms is allowed on lines 20 and 283 (525/60, 525-SMPTE line number convention), closed captions should not be programmed on these lines. - 625/50 system : (625-CCIR line number convention) Only lines 319 through 336 should be used for closed caption or extended data services (preceding lines contain the vertical sync pulses with equalizing pulses), although it is possible to program over a wider range. l2[4:0] = 00000 no line selected for closed caption encoding (i > 0) l2[4:0] = i line (318 +i) (CCIR) selected for encoding ... l2[4:0] = 10010 line 336 (CCIR) selected for encoding l2[4:0] = 11111 line 349 (CCIR) (*) Default value = 01111 line 284 (525/60, 525-SMPTE line number convention). This value also corresponds to line 333 in 625/50 system, (625-CCIR line number convention). REGISTERS_45 up to 63 : Reserved STV0118 40/42 |
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