beautypg.com

Renesas SH7781 User Manual

Page 965

background image

19. Display Unit (DU)

Rev.1.00 Jan. 10, 2008 Page 935 of 1658

REJ09B0261-0100

Table 19.6 Memory Parameter/ Monitor Parameter Setting Registers

No.

Names Used in the
Figure

Setting
Registers Description

1 MWX

(Plane memory width)

PnMWR

The plane X-direction memory width is set
between 16 and 4096 pixels, in 16 pixel units.

2 DSA

(Display area start
address)

PnDSA0R and
PnDSA1R

The start address in memory area is set for
plane n.

3 WASPY

(Plane n wrap-around start
position)

PnWASPR

The Y direction start position of the plane n
wrap-around area is set in raster line units,
with the address set by DSA as reference.

4 WAMWY

(Wraparound memory
width)

PnWAMWR

The wrap-around Y-direction memory width is
set arbitrarily in the range 240 to 4095 lines.

5 SPX

(Start position X)

PnSPXR

The distance in the X direction to the display
start position is set in pixel units, taking the
address set by DSA as the origin.

6 SPY

(Start position Y)

PnSPYR

The distance in the Y direction to the display
start position is set in raster line units, taking
the address set by DSA as the origin.

7 DSX

(Display size X)

PnDSXR

The X-direction display size of plane n is set in
pixel units.

8 DSY

(Display size Y)

PnDSYR

The Y-direction display size of plane n is set in
raster line units.

9 DPX

(Display position X)

PnDPXR

The X-direction distance to the display position
is set in pixel units, taking the upper-left corner
of monitor as the origin.

10 DPY

(Display position Y)

PnDPYR

The Y-direction distance to the display position
is set in raster line units, taking the upper-left
corner of monitor as the origin.

11 MLY

(Memory length Y)

PnMLR

The Y-direction memory area of plane n is set
in raster line units.