68
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37274MA-XXXSP
PRELIMINARY
Notice:
This
is not
a final
specification.
Some
paramentic
limits
are
subject
to change.
MITSUBISHI MICROCOMPUTERS
Fig. 72. 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)
0
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)
0
Control of
character color R
Control of
character color G
Control of
character color B
OUT1 control
Not used
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: Color signal output OFF
1: Color signal output ON
Bit name
Character code
(Low-order 8 bits)
0
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: Set “0” to RC10.
b0
RF6
RF5
RF4
RF3
RF2
RF1
RF0 RC17 RC16 RC15 RC14 RC13 RC12 RC11 RC10 RC23 RC22 RC21 RC20
RF7
b3
b0
b7
b0
b7
Blocks 1 to16
Character code
Color code 1
Color code 2