ALXD800EEXJ2VD AMD (ADVANCED MICRO DEVICES), ALXD800EEXJ2VD Datasheet - Page 345

• Manufacturer Part Number: ALXD800EEXJ2VD
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of ALXD800EEXJ2VD

• Operating Temperature (min): 0C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Display Controller Register Descriptions
6.6.11.6 DC VBI Pitch and Size (DC_VBI_PITCH)
DC Memory Offset 0B4h
Type
Reset Value
6.6.12
6.6.12.1 DC Color Key (DC_CLR_KEY)
DC Memory Offset 0B8h
Type
Reset Value
AMD Geode™ LX Processors Data Book
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
31:26
25:16
31:25
15:0
23:0
Bit
Bit
24
RSVD
Color Key Control Registers
RSVD
Name
RSVD
VBI_SIZE
VBI_PITCH
Name
RSVD
CLR_KEY_EN
CLR_KEY
R/W
xxxxxxxxh
R/W
00000000h
Description
Reserved. Set to 0.
VBI Data Size. Indicates how many QWORDs of data to fetch from memory for each line
of VBI
VBI Data Pitch. Indicates how many QWORDs of memory space to increment when
moving from the start of one active VBI line to the start of the next.
Description
Reserved. Set to 0.
Color Key Enable. This bit enables color key detection in the DC. When this bit is set,
the DC adjusts the alpha value of pixels whose 24-bit RGB values match the value in
CLR_KEY (bits [23:0]). A mask is also provided in CLR_KEY_MASK (DC Memory Offset
0BCh[23:0]) to indicate which bits can be ignored when performing this match. Color key
detection is performed after the data has been decompressed and the cursor has been
overlayed, but before scaling and filtering take place.
Color Key. This field represents the RGB value that will be compared to DC pixels when
performing color key detection.
VBI_Size
DC_VBI_PITCH Bit Descriptions
DC_CLR_KEY Bit Descriptions
DC_VBI_PITCH Register Map
DC_
CLR_KEY
Register Map
CLR_KEY
9
9
VBI_Pitch
8
8
33234C
7
7
6
6
5
5
4
4
3
3
2
2
1
1
345
0
0