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M65676FP Datasheet(PDF) 7 Page - Mitsubishi Electric Semiconductor |
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M65676FP Datasheet(HTML) 7 Page - Mitsubishi Electric Semiconductor |
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7 / 17 page  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 ±0.3µs 20(283) line 19(282) line 49.1 ±0.3µs 63.556 µs 2.232 ±50µs CRCC Input Data Fig. 2 CGMS WAVEFORM 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 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 ±0.25µs 27.4 ±1.4µs 64.0 µs Fig. 3 WSS WAVEFORM |
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