User`s manual

76
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. 8.11.10 Vertical Position Register 1i (i = 1 to 16)
The vertical start position for each block can be set in 1024 steps
(where each step is 1TH (TH: HSYNC cycle)) as values “0016” to “FF16”
in vertical position register 1i (i = 1 to 16) (addresses 022016 to 022F16)
and values “0016” to “0316” in vertical position register 2i (i = 1 to 16)
(addresses 0230
16 to 023F16). The vertical position registers are
shown in Figures 8.11.10 and 8.11.11.
Fig. 8.11.11 Vertical Position Register 2i (i = 1 to 16)
b7 b6 b5b4 b3 b2b1 b0
Vertical position register 1i (VP1i) (i = 1 to 16) [Addresses 0220
16 to 022F 16 ]
B Name Functions
After reset
RW
Vertical Position Register 1i
0
to
7
Control bits of
vertical display
start positions
(VP1i0 to VP1i7)
(See note 1)
Vertical display start positions
(low-order 8 bits)
TH
✕
(setting value of low-order 2 bits of VP2i ✕ 16
2
+ setting value of low-order 4 bits of VP1i
✕ 16
1
+ setting value of low-order 4 bits of VP1i
✕ 16
0
)
RW
Notes
1:
Do not “00
16 ” and “01 16 ” to VP1i at VP2i = “00 16 .”
2: T
H is cycle of H SYNC .
3: VP2i is vertical position register 2i.
Indeterminate
b7 b6 b5b4 b3 b2b1 b0
Vertical position register 2i (VP2i) (i = 1 to 16) [Addresses 0230
16 to 023F 16 ]
B Name Functions After reset R
W
Vertical Position Register 2i
0,
1
Control bits of
vertical display
start positions
(VP2i0, VP2i1)
(See note 1)
Vertical display start positions
(high-order 2 bits)
TH ✕
(setting value of low-order 2 bits of VP2i ✕ 16
2
+ setting value of low-order 4 bits of VP1i ✕ 16
1
+ setting value of low-order 4 bits of VP1i ✕ 16
0
)
RW
Nothing ic assigned. These bits are write disable bits.
When these bits are read out, the values are indeterminate.
2
to
7
R
—
Notes 1: Do not set “00 16 ” and “01 16 ” to VP1i at VP2i = “00 16 .”
2: T
H is cycle of H SYNC .
3: VP1i is vertical position register 1i.
Indeterminate
Indeterminate