Public Version
Display Subsystem Register Manual
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Table 7-176. DISPC_GFX_POSITION
Address Offset
0x088
Physical address
0x4805 0488
Instance
DISC
Description
The register configures the position of the graphics window.
Shadow register, updated on VFP start period or EVSYNC.
Type
RW
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
Reserved
GFXPOSY
Reserved
GFXPOSX
Bits
Field Name
Description
Type
Reset
31:27
Reserved
Write 0s for future compatibility.
RW
0x00
Read returns 0
26:16
GFXPOSY
Y position of the graphics window.
RW
0x000
Encoded value (from 0 to 2047) to specify the Y position of the graphics
window on the screen. The line at the top has the Y-position 0.
15:11
Reserved
Write 0s for future compatibility.
RW
0x00
Read returns 0
10:0
GFXPOSX
X position of the graphics window.
RW
0x000
Encoded value (from 0 to 2047) to specify the X position of the graphics
window on the screen. The first pixel on the left of the screen has the
X-position 0.
Table 7-177. Register Call Summary for Register DISPC_GFX_POSITION
Display Subsystem Basic Programming Model
•
Display Controller Basic Programming Model
:
•
Graphics Layer Configuration Registers
:
•
:
•
:
Display Subsystem Register Manual
•
Display Controller Register Mapping Summary
:
Table 7-178. DISPC_GFX_SIZE
Address Offset
0x08C
Physical address
0x4805 048C
Instance
DISC
Description
The register configures the size of the graphics window.
Shadow register, updated on VFP start period or EVSYNC.
Type
RW
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
Reserved
GFXSIZEY
Reserved
GFXSIZEX
Bits
Field Name
Description
Type
Reset
31:27
Reserved
Write 0s for future compatibility. Read returns 0.
RW
0x00
26:16
GFXSIZEY
Number of lines of the graphics window.
RW
0x000
Encoded value (from 1 to 2048) to specify the number of lines of the
graphics window (program to value minus one).
15:11
Reserved
Write 0s for future compatibility. Read returns 0.
RW
0x00
10:0
GFXSIZEX
Number of pixels of the graphics window.
RW
0x000
Encoded value (from 1 to 2048) to specify the number of pixels per line
of the graphics window (program to value minus one).
1844
Display Subsystem
SWPU177N – December 2009 – Revised November 2010
Copyright © 2009–2010, Texas Instruments Incorporated