ALXD800EEXJ2VD AMD (ADVANCED MICRO DEVICES), ALXD800EEXJ2VD Datasheet - Page 289

• 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
6.5.5.4
There are two read modes provided to assist the CPU with
graphics operations in planar modes. Read mode 0 simply
returns the frame buffer data. Read mode 1 allows the CPU
AMD Geode™ LX Processors Data Book
Memory Read Data [31:0]
Read Modes
Read Map Select [1:0]
Color Don’t Care [3:0]
Color Compare [3:0]
ReadMode1
CPU A[1:0]
Chain2
Chain4
Figure 6-18. Read Mode Data Flow
Select Read
CPU Read Data [7:0]
Map Logic
Out [7:0]
In [31:0]
B
A
to do a single color compare across eight pixels. Figure 6-
18 shows the data flow for read modes. Figure 6-19 on
page 290 shows how the color compare logic in Figure 6-
18 works.
B
Color Compare
Out [7:0]
33234C
In [31:0]
Logic
289