Allwinner A20 - Page 535

A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 535 / 812
Bit
Read/W
rite
Default/
Hex
Description
31:29
/
/
/
28:16
R/W
UDF
LAY_HEIGHT
Layer Height
The Layer Height = The value of these bits add 1
15:13
/
/
/
12:0
R/W
UDF
LAY_WIDTH
Layer Width
The Layer Width = The value of these bits add 1
5.4.4.5. DE-LAYER COORDINATE CONTROL REGISTER
Offset:
Layer 0: 0x820
Layer 1: 0x824
Layer 2: 0x828
Layer 3: 0x82C
Register Name: DEBE_LAYCOOR_REG
Bit
Read/W
rite
Default/
Hex
Description
31:16
R/W
UDF
LAY_YCOOR
Y coordinate
Y is the left-top y coordinate of layer on screen in pixels
The Y represent the two’s complement
15:0
R/W
UDF
LAY_XCOOR
X coordinate
X is left-top x coordinate of the layer on screen in pixels
The X represent the two’s complement
Setting the layer0-layer3 the coordinate (left-top) on screen control information