User`s manual
67
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
M37281MAH–XXXSP,M37281MFH–XXXSP
M37281MKH–XXXSP,M37281EKSP
The OSD circuit has an extended display mode. This mode allows
multiple lines (16 lines or more) to be displayed on the screen by
interrupting the display each time one line is displayed and rewriting
data in the block for which display is terminated by software.
Figure 8.11.1 shows the configuration of OSD character display area.
Figure 8.11.2 shows the block diagram of the OSD circuit. Figure
8.11.3 shows the OSD control register 1. Figure 8.11.4 shows the
block control register i.
Fig. 8.11.1 Configuration of OSD Character Display Area
1
6
d
o
t
s
2
0
d
o
t
s
O
S
D
m
o
d
e
←U
n
d
e
r
l
i
n
e
a
r
e
a
✽
←Blank area
✽
←B
l
a
n
k
a
r
e
a
✽
16 dots
2
6
d
o
t
s
2
0
d
o
t
s
✽:
D
i
s
p
l
a
y
e
d
o
n
l
y
i
n
C
C
m
o
d
e
.
C
C
m
o
d
e
16
2
6
d
o
t
s
CDOSD mode