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M37151 датащи(PDF) 73 Page - Renesas Technology Corp |
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M37151 датащи(HTML) 73 Page - Renesas Technology Corp |
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73 / 139 page ![]() SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER M37151M6/M8/MA/MC/MF-XXXFP, M37151EFFP MITSUBISHI MICROCOMPUTERS 72 Rev. 1.0 Fig. 8.11.15 Relation between Field Determination Flag and Display Font Field Even Odd Field determination flag(Note) Display dot line selection bit Display dot line 0 (T2 > T1) 1 (T3 < T2) 0 1 0 1 When using the field determination flag, be sure to set bit 0 of the PWM mode register 1 (address 0208 Both HSYNC cignal and VSYNC signal are negative-polarity input 16 ) to “0.” T2 T3 OSD ROM font configuration diagram Dot line 0 Dot line 1 Odd Dot line 0 Dot line 1 (n – 1) field (Odd-numbered) T1 0.25 to 0.50[ µs] at f(XIN) = 8 MHz CC mode 13 57 9 11 13 15 1 3 5 7 9 11 13 15 17 19 21 23 25 26 24 22 20 18 16 14 12 10 8 6 4 2 2 4 6 8 10 12 14 16 1 3 5 7 9 11 13 15 17 19 20 18 16 14 12 10 8 6 4 2 13 5 7 9 11 13 15 2 4 6 8 10 12 14 16 OSD mode HSYNC VSYNC and VSYNC control signal in microcom- puter Upper : VSYNC signal Lower : VSYNC control signal in micro- computer (n) field (Even-numbered) (n + 1) field (Odd-numbered) “0,” ” font is displayed at even field, the “ I/O polarity control register can be read as the field determination flag : “1” is read at odd field, “0” is read at even field. Note : The field determination flag changes at a rising edge of the V SYNC control signal (negative-polarity input) in the microcomputer. |
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