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M37151 Datasheet(PDF) 80 Page - Renesas Technology Corp |
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M37151 Datasheet(HTML) 80 Page - Renesas Technology Corp |
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80 / 139 page  SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER MITSUBISHI MICROCOMPUTERS M37151M6/M8/MA/MC/MF-XXXFP, M37151EFFP 79 Rev. 1.0 8.11.9 Attribute The attributes (border, flash, underline, italic) are controlled accord- ing to the character font. The attributes to be controlled are different depending on each mode. CC mode ..................... Flash, underline, italic (per character unit) OSD mode .................. Border (per character unit) (1) Underline The underline is output at the 23th and 24th dots in the vertical direc- tion only in the CC mode. The underline is controlled by RA5 of the OSD RAM. The color of the underline is the same color as that of the character font. (2) Flash The character font and the underline are flashed only in the CC mode. The flash is controlled by RA4 of OSD RAM. In the character font part, the character output part is flashed, but the character back- ground part is not flashed. The flash cycle is based on the VSYNC count. • VSYNC cycle ✕ 48 ≈ 800 ms (at display ON) • VSYNC cycle ✕ 16 ≈ 267 ms (at display OFF) (3) Italic The italic is made by slanting the font stored in the OSD ROM to the right only in the CC mode. The italic is controlled by RA6 of OSD RAM. Display examples of the italic and underline are shown in Figure 8.11.19, using “R.” Notes 1: When setting both the italic and the flash, the italic character flashes. 2: The boundary of character color is displayed in italic. However, the boundary of character background color is not affected by the italic (refer to Figure 8.11.20). 3: The adjacent character (one side or both sides) to an italic character is displayed in italic even when the character is not specified to be displayed in italic (refer to Figure 8.11.20). 4: Italics display cannot be used at pre-divided ratio 1 setting . |
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