M37270MF Datasheet, PDF (46/94 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

MITSUBISHI MICROCOMPUTERS
M37270MF-XXXSP
M37270EF-XXXSP, M37270EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
Clock for OSD
OSC1 OSC2 HSYN C VSYN C
Data slicer clock
Display
oscillation
circuit
OSD Control circuit
RAM for OSD
20-bit ! 40 ! 16
Control registers for OSD
OSD control register
(address 00CE16)
Horizontal position register (address 00CF16)
Block control registers
(addresses 00D016 to 00DF16)
Clock source control register _{(address 021616)}
I/O polarity control register
Raster color register
Extra font color register
Border color register
Window H/L registers
Vertical registers
(address 021716)
(address 021816)
(address 021916)
(address 021B16)
(addresses 021C16 to 021F16)
(addresses 022016 to 023F16)
RAM for OSD
(16-bit! 20! 320) +
16-bit ! 26 ! 32)
Shift register 1
16-bit
Shift register 2
16-bit
Data bus
Fig. 48. Block diagram of OSD control circuit
Output circuit
R G B I1 I2 OUT1 OUT2
46