ALXD800EEXJ2VD AMD (ADVANCED MICRO DEVICES), ALXD800EEXJ2VD Datasheet - Page 395

• 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

Video Processor
Table 6-60 represents the same logic that is displayed in Figure 6-28 on page 394.
Note 1.
Note 2.
Note 3.
6.7.5.2
Either the graphics or video stream can be routed through
an integrated palette RAM for gamma-correction of the
data stream or (for video data) contrast/brightness adjust-
ments.
A bypass path is provided for either the graphics or video
stream (depending on which is sent through the gamma
RAM).
6.7.5.3
The Video Processor module connects directly to either the
internal CRT DACs, or provides a standard digital TFT
interface.
AMD Geode™ LX Processors Data Book
VG_CK
(Note 1)
x (Note 3)
x
Graphics
Color-Key
(VG_CK = 0)
Video
Chroma Key
(VG_CK = 1)
VG_CK is bit 20 in the Display Configuration register (VP Memory Offset 0008h).
GFX_INS_VIDEO is bit 8 in the Video De-interlacing and Alpha Control register (VP Memory Offset 0098h).
ALPHAx_COLOR_REG_EN are bit 24 in the Alpha Window Color registers (VP Memory Offsets 0D0h, 0F0h, and 110h).
x = Don’t care.
Gamma RAM
Video Processor Module Display
Interface
Windows
x
Not in Video
Window
Not in Alpha
Window
Inside Alpha
Window x
Not in Alpha
Window
Inside Alpha
Window x
Configuration (Note 2)
x
x
GFX_INS_VIDEO = 0
GFX_INS_VIDEO = 1
ALPHAx_COLOR_REG_EN = 1
ALPHAx_COLOR_REG_EN = 0
x
x
GFX_INS_VIDEO = 0
GFX_INS_VIDEO = 1
ALPHAx_COLOR_REG_EN = 1
ALPHAx_COLOR_REG_EN = 0
x
x
Table 6-60. Truth Table for Alpha-Blending
Color-Key
Graphics
Cursor
Match
Data
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
6.7.5.4
The VP uses a two-wire protocol to control the sequence of
data on the video port. This protocol consists of VID_VAL
and VID_RDY. VID_VAL indicates the DC has placed valid
data on the 32-bit VID_DATA bus. VID_RDY indicates the
VP is ready to accept video data for the next video source
line. The VP typically starts fetching video data five scan
lines before the data is required for display.
Graphics
[31:24] =
Video Interface
00h
Yes
Yes
Yes
No
No
No
x
x
x
x
x
x
x
x
x
x
Blending
Per-pixel
Enabled
Alpha
Yes
Yes
No
No
x
x
x
x
x
x
x
x
x
x
x
x
33234C
Video Data
Color-Key
Normal
Match
Yes
Yes
Yes
No
No
No
x
x
x
x
x
x
x
x
x
x
Cursor color
Graphic data
Video data
Graphic data
Video data
Color from color
register
Video data
Window alpha-
blended data
Per-pixel alpha-
blended data
Graphic data
Video data
Graphic data
Color from color
register
Graphic data
Per-pixel alpha-
blended data
Window alpha-
blended data
Mixer Output
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