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M37151M6 Datasheet(PDF) 88 Page - Renesas Technology Corp |
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M37151M6 Datasheet(HTML) 88 Page - Renesas Technology Corp |
88 / 138 page ![]() M37151M6/M8/MA/MC/MF-XXXFP, M37151EFFP Rev.1.00 Nov 01, 2002 page 88 of 136 REJ03B0129-0100Z 8.11.13 OSD Output Pin Control The OSD output pins R, G, B and OUT can also function as ports P52–P55. Set the corresponding bit of the OSD port control register (address 00CB16) to “0” to specify these pins as OSD output pins, or to “1” to specify as the general-purpose port P5. The input polarity of the HSYNC and VSYNC, and the output polarity of signals R, G, B, OUT can be specified with the I/O polarity control register (address 00D8). Set bits to “0” to specify positive polarity; “1” to specify negative polarity (refer to Figure 8.11.14). The structure of the OSD port control register is shown in Figure 8.11.29. Fig. 8.11.29 OSD Port Control Register 1 b7 b6 b5 b4 b3 b2 b1 b0 OSD port control register (PF) [Address 00CB16] B Name Functions After reset R W OSD Port Control Register 0 2 0 3 0 : G signal output 1 : Port P53 output 0 0 Fix these bits to “0.” Fix this bit to “1.” Fix this bit to “0.” R — R W R W R W W 0, 1 Port P53 output signal selection bit (PF3) 4 0 : R signal output 1 : Port P54 output 0 R W Port P54 output signal selection bit (PF4) 0R W 0 : B signal output 1 : Port P52 output Port P52 output signal selection bit (PF2) 5 0 : OUT signal output 1 : Port P55 output Port P55 output signal selection bit (PF5) 7 0 0 Indeterminate — 6 0 |
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