M37281EKSP Datasheet, PDF (68/172 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

M37281MAH–XXXSP,M37281MFH–XXXSP,M37281MKH–XXXSP, M37281EKSP
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 registers 1, 2
(addresses 021C16, 021E16)
Bottom border control registers 1, 2
(addresses 021D16, 021F16)
Vertical position registers 1i, 2i
(addresses 022016 to 023F16)
Color pallet register i
(addresses 024116 to 024716,
024916 to 024F16)
Left border control registers 1, 2
(addresses 025016, 025116)
Right border control registers 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. 8.11.2 Block Diagram of OSD Circuit
Rev.1.01 2003.07.16 page 68 of 170