Rev. 1.0, 02/00, page 848 of 1141
29.5.8
Display Position Registers (HPOS and VPOS)
The HPOS and VPOS include the horizontal display position register and the vertical display
position register.
(1) Horizontal Display Position Register (HPOS)
0
1
R/W
2
R/W
3
4
R/W
R/W
5
7
HP4
0
HP3
0
HP2
0
HP1
0
HP0
0
R/W
HP7
0
R/W
R/W
R/W
HP6
0
HP5
0
6
Bit:
Initial value:
R/W:
The horizontal display position register is used to set the horizontal display start position for
characters. It is an 8-bit read/write register. When reset, when the module is stopped, in sleep
mode, in standby mode, in watch mode, in subactive mode, or in subsleep mode, the horizontal
display position register is initialized to H'00. When the OSD display update timing control bit
(DTMV) is 1, the OSD display is updated to the horizontal display position register settings
synchronously with the Vsync signal (OSDV).
Bits 7 to 0
Horizontal Display Start Position Specification Bits (HP7 to HP0): Set the
display start position in the horizontal direction. Setting units are twice the dot clock cycle. Refer
to the base point for the horizontal display start position in figure 29.11.
If the horizontal display start position is Hs (
µ
s), then Hs is given by 2
×
tc
×
(value of HP7 to
HP0), where tc is the dot clock cycle.
(2) Vertical Display Position Register (VPOS)
8
9
R/W
10
R/W
11
12
—
—
13
15
—
1
VSPC2
0
VSPC1
0
VSPC0
0
VP8
0
—
—
1
R/W
R/W
—
—
1
—
1
14
Bit:
Initial value:
R/W:
0
1
R/W
2
R/W
3
4
R/W
R/W
5
7
VP4
0
VP3
0
VP2
0
VP1
0
VP0
0
R/W
VP7
0
R/W
R/W
R/W
VP6
0
VP5
0
6
Bit:
Initial value:
R/W:
The vertical display position register is a 16-bit read/write register used to set the character size,
vertical display start position, and vertical-direction row interval. When reset, when the module is
stopped, in sleep mode, in standby mode, in watch mode, in subactive mode, or in subsleep mode,
the vertical display position register is initialized to H'F000. When the OSD display update timing
control bit (DTMV) is 1, the OSD display is updated to the vertical display position register
settings synchronously with the Vsync signal (OSDV).