M37280MF Datasheet, PDF (91/178 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

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MITSUBISHI MICROCOMPUTERS
M37280MF–XXXSP, M37280MK–XXXSP
M37280EKSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
12.11.7 Character Color
As shown in Figure 2.11.24, there are 16 built-in color pallets. Color
pallet 0 is fixed at transparent, and color pallet 8 is fixed at black.
The remaining 14 colors can be set to any of the 64 colors available.
The setting procedure for character colors is as follows:
• CC mode ................................. 8 kinds
Color pallet selection range (color pallets 0 to 7 or 8 to 15) can be
selected by bit 0 of the OSD control register 3 (address 021916).
Color pallets are set by bits RC11 to RC13 of the OSD RAM from
among the selection range.
• OSD mode .............................. 15 kinds
Color pallets are set by bits RC11 to RC14 of the OSD RAM.
• CDOSD mode ......................... 8 kinds
Color pallet selection range (color pallets 0 to 7 or 8 to 15) can be
selected by bit 3 of the OSD control register 3 (address 021916).
Color pallets are set in dot units according to the CD font data (the
OSD RAM<color dot font> contents)from among the selection
range.
Only in CDOSD mode, a dot which selects color pallet 0 or 8 is
colored to the color pallet set by RC13 to RC16 of OSD RAM in
character units.
• SPRITE display ....................... 8 kinds
Color pallet selection range (color pallets 0 to 7 or 8 to 15) can be
selected by bit 4 of the OSD control register 3 (address 021916).
Color pallets are set in dot units according to the CD font data (the
OSD RAM<color dot font> contents) from among the selection
range.
Notes 1: Color pallet 8 is always selected for bordering and solid space output
(OUT 1 output) regardless of the set value in the register.
2: Color pallet 0 (transparent) and the transparent setting of other color
pallets will differ. When there are multiple layers overlapping (on top
of each other, piled up), and the priority layer is color pallet 0 (trans-
parent), the bottom layer is displayed, but if the priority layer is the
transparent setting of any other color pallet, the background is dis-
played without displaying the bottom layer (refer to Figure 12.11.26).
12.11.8 Character Background Color
The display area around the characters can be colored in with a char-
acter background color. Character background colors are set in
character units.
• CC mode ................................. 4 kinds
Color pallet selection range (color pallets 0 to 3, 4 to 7, 8 to 11, or
12 to 15) can be selected by bits 1 and 2 of the OSD control
register 3 (address 021916). Color pallets are set by bits RC20
and RC21 of the OSD RAM from among the selection range.
• OSD mode .............................. 15 kinds
Color pallets are set by bits RC15, RC16, RC20, and RC21 of the
OSD RAM.
Note : The character background is displayed in the following part:
(character display area) – (character font) – (border).
Accordingly, the character background color and the color signal for
these two sections cannot be mixed.
Rev. 1.0
91