User`s manual

112
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37281MAH–XXXSP,M37281MFH–XXXSP
M37281MKH–XXXSP,M37281EKSP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
Fig. 8.11.52 Right Border Control Register 1
Fig. 8.11.53 Right Border Control Register 2
b7 b6 b5 b4 b3 b2 b1 b0
Right border control register 1 (RB1) [Address 0252
16 ]
B Name Functions After reset RW
Right Border Control Register 1
Control bits of
right border
(RB10 to RB17)
1
RW
0
to
7
Right border position (low-order 8 bits)
T
OSC ✕
(setting value of low-order 3 bits of RB2 ✕16
2
+ setting value of high-order 4 bits of RB1 ✕16
1
+ setting value of low-order 4 bits of RB1 ✕16
0
)
Notes 1: Set values fit for the following condition:
(LB1 + LB2 ✕ 16
2
) < (RB1 + RB2 ✕ 16
2
).
2: T
OSC is OSD oscillation period.
3: RB2 is right border control register 2.
b7 b6 b5 b4 b3 b2 b1 b0
Right border control register 2 (RB2) [Address 0253
16 ]
B Name Functions After reset RW
Right Border Control Register 2
Control bits of
right border
(RB20 to RB22)
1
R
W
0
to
2
0
Right border position (high-order 3 bits)
T
OSC ✕
(setting value of low-order 3 bits of RB2 ✕16
2
+ setting value of high-order 4 bits of RB1 ✕ 16
1
+ setting value of low-order 4 bits of RB1 ✕16
0
)
Nothing is assigned. These bits are write disable bits.
When these bits are read out, the values are “0”.
3
to
7
R
W
Notes 1: Set values fit for the following condition:
(LB1 + LB2 ✕ 16
2
) < (RB1 + RB2 ✕ 16
2
).
2: T
OSC is OSD oscillation period.
3: RB1 is right border control register 1.