MITSUBISHI MICROCOMPUTERS
M37270MF-XXXSP
M37270EF-XXXSP, M37270EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
60
b0
RF6 RF5 RF4 RF3 RF2 RF1 RF0 RC17 RC16 RC15 RC14 RC13 RC12 RC11 RC10 RC23 RC22 RC21 RC20RF7
b3b0b7b0b7
Blocks 1 to16
Character code Color code 1 Color code 2
Fig. 65. Structure of OSD RAM
Bit
RF0
RF1
RF2
RF3
RF4
RF5
RF6
RF7
RC10
RC11
RC12
RC13
RC14
RC15
RC16
RC17
RC20
RC21
RC22
RC23
Bit name
Character code
(Low-order 8 bits)
Character code
(High-order 1 bit)
Control of
character color R
Control of
character color G
Control of
character color B
OUT1 control
Flash control
Underline control
Italic control
Control of background
color R
Control of background
color G
Control of background
color B
Not used
Function
Specification of
character code in
OSD ROM
0: Color signal output OFF
1: Color signal output ON
0:
Character output
1:
Background output
0: Flash OFF
1: Flash ON
0: Underline OFF
1: Underline ON
0: Italic OFF
1: Italic ON
0: Color signal output OFF
1: Color signal output ON
Bit name
Character code
(Low-order 8 bits)
Character code
(High-order 1 bit)
Control of
character color R
Control of
character color G
Control of
character color B
OUT1 control
Control of
character color I1
Not used
Control of background
color R
Control of background
color G
Control of background
color B
Control of background
color
I1
Function
Specification of
character code in
OSD ROM
0: Color signal output OFF
1: Color signal output ON
0:
Character output
1:
Background output
0: Color signal output OFF
1: Color signal output ON
0: Color signal output OFF
1: Color signal output ON
Bit name
Character code
(Low-order 8 bits)
Character code
(High-order 1 bit)
Character color code 0
(CC0)
Character color code 1
(CC1)
Character color code 2
(CC2)
OUT1 control
Extra code 0
(EX0)
Extra code 1
(EX1)
Extra code 2
(EX2)
Background color code 0
(BCC0)
Background color code 1
(BCC1)
Background color code 2
(BCC2)
Extra code 3
(EX3)
Function
Specification of
character code in
OSD ROM
Specification of
character color
0:
Character output
1:
Background output
Specification of
extra code in OSD
ROM
Specification of
background color
Specification of
extra code in OSD
ROM
CC mode OSD mode EXOSD mode
Notes 1: Read value of bits 4 to 7 of the color code 2 is undefined.
2: For “not used” bits, the write value is read.
3: The decode value of the extra code is “EX4.”
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