MITSUBISHI MICROCOMPUTERS
M37270MF-XXXSP
M37270EF-XXXSP, M37270EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
Blocks 1 to16
b7
b0
b7
b0
b3
b0
RF7 RF6 RF5 RF4 RF3 RF2 RF1 RF0 RC17 RC16 RC15 RC14 RC13 RC12 RC11 RC10 RC23 RC22 RC21 RC20
Character code
CC mode
Color code 1
Color code 2
OSD mode
EXOSD mode
Bit
Bit name
Function
Bit name
Function
Bit name
Function
RF0
RF1
RF2
RF3
RF4
RF5
RF6
RF7
RC10
Specification of
character code in
OSD ROM
Specification of
character code in
OSD ROM
Specification of
character code in
OSD ROM
Character code
Character code
Character code
(Low-order 8 bits)
(Low-order 8 bits)
(Low-order 8 bits)
Character code
(High-order 1 bit)
Control of
Character code
(High-order 1 bit)
Control of
Character code
(High-order 1 bit)
Character color code 0
(CC0)
RC11
RC12
RC13
RC14
RC15
RC16
RC17
0: Color signal output OFF
1: Color signal output ON
0: Color signal output OFF
1: Color signal output ON
Specification of
character color
character color R
Control of
character color R
Control of
Character color code 1
(CC1)
character color G
Control of
character color G
Control of
Character color code 2
(CC2)
character color B
OUT1 control
character color B
OUT1 control
0: Character output
1: Background output
0: Flash OFF
0: Character output
1: Background output
0: Color signal output OFF
1: Color signal output ON
0: Character output
1: Background output
Specification of
extra code in OSD
ROM
OUT1 control
Flash control
Underline control
Italic control
Control of
Extra code 0
(EX0)
1: Flash ON
character color I1
0: Underline OFF
1: Underline ON
0: Italic OFF
Extra code 1
(EX1)
Not used
Extra code 2
(EX2)
1: Italic ON
0: Color signal output OFF
1: Color signal output ON
0: Color signal output OFF
1: Color signal output ON
Specification of
RC20 Control of background
color R
Control of background
color R
Background color code 0
(BCC0)
background color
Control of background
color G
Control of background
color G
RC21
RC22
RC23
Background color code 1
(BCC1)
Control of background
color B
Control of background
color B
Background color code 2
(BCC2)
Specification of
extra code in OSD
ROM
Control of background
color I1
Extra code 3
(EX3)
Not used
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.”
Fig. 65. Structure of OSD RAM
60
RENESAS [ RENESAS TECHNOLOGY CORP ]
