M37221 Mitsubishi, M37221 Datasheet - Page 43

• Manufacturer Part Number: M37221
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
• Manufacturer: Mitsubishi

(5) Color Registers
The color of a displayed character can be specified by setting the
color to one of the 4 registers (CO0 to CO3: addresses 00E6
00E9
RAM. There are 3 color outputs; R, G and B. By using a combination
of these outputs, it is possible to set 2
ors. However, since only 4 color registers are available, up to 4 col-
ors can be disabled at one time.
R, G and B outputs are set by using bits 1 to 3 in the color register.
Bit 5 is used to specify whether a character output or blank output.
Figure 46 shows the structure of the color register.
16
) and then specifying that color register with the CRT display
3
–1 (when no output) = 7 col-
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
16
to
M37221EF-XXXSP,M37221EFSP
Fig. 46. Structure of color registers
Notes 1 : When bit 5 = “0” and bit 4 = “1,” there is output same as
7
2 :
a character or border output from the OUT1 pin.
Do not set bit 5 = “0” and bit 4 = “0.”
When only bit 7 = “1” and bit 5 = “0,” there is output
from the OUT2 pin.
with ON-SCREEN DISPLAY CONTROLLER
0
G signal output selection bit
R signal output selection bit
B signal output (background)
selection bit (Note 1)
OUT1 signal output control bit
(Notes 1,2)
B signal output selection bit
G signal output (background)
selection bit
R signal output (background)
selection bit (Note 2)
0 : No character is output
1 : Character is output
0 : No character is output
1 : Character is output
0 : No background color is output
1 : Background color is output
0 : Character is output
1 : Blank is output
0 : No character is output
1 : Character is output
0 : No background color is output
1 : Background color is output
0 : No background color is output
1 : Background color is output
Color register 0, 1, 2, 3
(CO0 : address 00E6
(CO1 : address 00E7
(CO2 : address 00E8
(CO3 : address 00E9
16
16
16
16
)
)
)
)
43