Setting Of Border Selection Register; Number Of Display Characters; Fig. 5.2.2 Color Register N (M37220M3-Xxxsp/Fp); Fig. 5.2.3 Border Selection Register (M37220M3-Xxxsp/Fp) - Renesas 7200 Series User Manual

APPLICATION
5.2 Notes on programming for OSD (M37220M3-XXXSP/FP)
Color Register n
b7 b6 b5 b4 b3 b2 b1 b0

Fig. 5.2.2 Color register n (M37220M3-XXXSP/FP)

5.2.2 Setting border selection register
The M37220M3-XXXSP/FP can output neither character background (OUT) nor border at the same time.
When setting the border selection bits (bit 0 or 2) to "1," the border output takes over OUT (setting of
bit 5 of the color registers). Therefore, select either the character background output or the border output.
Border Selection Register
b7 b6 b5 b4 b3 b2 b1 b0

Fig. 5.2.3 Border selection register (M37220M3-XXXSP/FP)

5.2.3 Number of display characters

The M37221ERSS can display up to 24 characters in each block. However, the M37220M3-XXXSP/FP can
display only up to 20 characters in each block. Note this when programming using the M37220M3-XXXSP/
FP.
5-14
Color register n (COn) (n = 0 to 3) [Addresses 00E6
B Name
0 Nothing is assigned. This bit is a write disable bit.
When this bit is read out, the value is "0."
1 B signal output 0 : No character is output
selection bit (COn1) 1 : Character is output
0 : No character is output
G signal output
2
1 : Character is output
selection bit (COn2)
3 R signal output 0 : No character is output
selection bit (COn3) 1 : Character is output
4
Nothing is assigned. This bit is a write disable bit.
When this bit is read out, the value is "0."
0 : Character is output
5 OUT signal output
control bit (COn5) 1 : Blank is output
6, 7
Nothing is assigned. These bits are write disable bits.
When these bits are read out, the values are "0."
Border selection register (MD) [Address 00E5
B Name
0 Block 1 OUT output
border selection bit (MD10)
1 Nothing is assigned. This bit is a write disable bit.
When this bit is read out, the value is "0."
2 Block 2 OUT output
border selection bit (MD20)
3
Nothing is assigned. These bits are write disable bits.
to
When these bits are read out, the values are "0."
7
7220 Group User's Manual
to 00E9 ]
16 16
Functions
]
16
Functions
0 : Same output as character output Indeterminate
1 : Border output
0 : Same output as character output Indeterminate
1 : Border output
After reset R W
0 R —
0 R W
0 R W
0 R W
0 R —
0 R W
0 R —
After reset R W
R W
0
R —
R W
0 R —