ALXD800EEXJ2VD AMD (ADVANCED MICRO DEVICES), ALXD800EEXJ2VD Datasheet - Page 276

• 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

6.5
The Display Controller (DC) module retrieves graphics,
video, and overlay streams from the frame buffer, serial-
izes the streams, performs any necessary color lookups
and output formatting, and interfaces to the VP for driving
the display device.
Features
• 512x64-bit display FIFO
• 64x64x2-bit hardware cursor
• 64x vertical resolution x2-bit hardware icon overlay
• 3x261x8-bit palette/gamma RAM (including five exten-
• Display refresh compression
• 64x64-bit compressed line buffer
• Flexible timing generator
• Support for Video Blanking Interval (VBI) data
• Support for interlaced modes up to 1920x1080
• 3-tap flicker filter for support of interlaced NTSC and
• Flexible memory addressing
• Video overlay support
276
sion colors)
PAL display modes
Graphical User Interface Block
8-Bit Pixel,
Syncs,
Display enable
Display Controller
VGA Block
33234C
Display Refresh
Memory Control
Figure 6-12. Display Controller High-Level Block Diagram
FIFO
CTL
Dirty/Valid RAM
and Control
Display Memory I/F
CLUT
Dirty/Valid Flags
FIFO
• Independent VGA block for complete hardware VGA
• Dirty/Valid RAM and controller to monitor memory traffic
• Six 512x64-bit line buffers to support downscaling and
• 3x5-tap graphics filter for scaling and filtering
The DC module consists of a GUI (Graphical User Inter-
face) block, a VGA block, and back-end scaling/filter. The
GUI is compatible with the Display Controller found in the
GX processor. The VGA block provides hardware compati-
bility with the VGA graphics standard. The GUI and VGA
blocks share a single display FIFO and display refresh
memory interface to the memory controller. The VGA block
passes 8 bpp and syncs to the GUI, which expands the pix-
els to 24 bpp via the CLUT (color lookup table). The VGA
block also passes the information to the graphics filter for
scaling and interlaced display support. This stream is then
passed to the Video Processor (VP), which is used for
video overlay. The VP forwards this information to the DAC
(Digital-to-Analog Converter), which generates the analog
red, green, and blue signals and buffers the sync signals,
that are then sent to the display. The VP output can also be
rendered as YUV data that can be output on the Video Out-
put Port. The DC block diagram is shown in Figure 6-12.
implementation
in support of display refresh compression
flicker filtering
Graphics
Scaler/
Filter
Host I/F
GLIU0 Memory Port
Pixel, Syncs, DISPEN
Video Data Output to VP
AMD Geode™ LX Processors Data Book
GeodeLink™
Interface
(GLIU0)
Unit 0
Display Controller
GLIU0 Port