M37280MF Datasheet, PDF (68/178 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
Clock for OSD
OSC1 OSC2 ^{HSYNC VSYNC}
Data slicer clock
Display
oscillation
circuit
OSD control circuit
RAM for OSD (SPRITE)
16 dots ! 20 dots ! 3 planes
Control register for OSD
OSD port control register
(address 00CB16)
OSD control register 1
(address 00CE16)
Horizontal position register
(address 00CF16)
Block control register i
(addresses 00D016 to 00DF16)
OSD control register 2
(address 021516)
Clock control register
(address 021616)
I/O polarity control register
(address 021716)
Raster color register
(address 021816)
OSD control register 3
(address 021916)
Top border control register 1, 2
(addresses 021C16, 021E16)
Bottom border control register 1, 2
(addresses 021D16, 021F16)
Vertical position register 1i, 2i
(addresses 022016 to 023F16)
Color pallet register i
(addresses 024116 to 024716,
024916 to 024F16)
Left border control register 1, 2
(addresses 025016, 025116)
Right border control register 1, 2
(addresses 025216, 025316)
SPRITE vertical position registers 1, 2 (addresses 025416, 025516)
SPRITE horizontal position registers 1, 2 (addresses 025616, 025716)
SPRITE OSD control register
(addresses 025816)
Shift register
OSD RAM
18 bits ! 32 characters ! 16 lines
OSD ROM (charater font)
16 dots ! 20 dots ! 510 characters
Shift register
Shift register
OSD ROM (color dot font)
16 dots ! 26 dots ! 3 planes !
62 characters
Output circuit
R
G
B
OUT1 OUT2
Data bus
Shift register
Fig. 12.11.2 Block Diagram of OSD Circuit
Rev. 1.0
68