ALXD800EEXJ2VD AMD (ADVANCED MICRO DEVICES), ALXD800EEXJ2VD Datasheet - Page 330

• 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

6.6.6
The cursor registers contain pixel coordinate information for the cursor. These values are not latched by the timing genera-
tor until the start of the frame to avoid tearing artifacts when moving the cursor.
The Line Count/Status register holds status information for the current display status, including the current scan line for the
display.
6.6.6.1
DC Memory Offset 060h
Type
Reset Value
This register contains the X position information of the hardware cursor.
Settings written to this register do not take effect until the start of the following frame or interlaced field.
330
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
31:16
31:17
16:11
15:0
10:0
Bit
Bit
DC Cursor X Position (DC_CURSOR_X)
Cursor Position and Line Count/Status Registers
Name
FB_H_ACTIVE
FB_V_ACTIVE
Name
RSVD
X_OFFSET
CURSOR_X
R/W
xxxxxxxxh
33234C
RSVD
Description
Horizontal Frame Buffer Active End. This field is used only when graphics scaling is
enabled. The lower three bits of this register are ignored and presumed to be 111. Includ-
ing these bits, the value in this field represents the total number of pixels in a line in the
graphics frame buffer minus 1.
This field is analogous to the H_ACTIVE field in the DC_H_ACTIVE_TIMING register
(DC Memory Offset 040h[11:0]), except that this field is used only for the fetching and
rendering of pixel data, not the display timings. When graphics scaling is disabled, this
field is not used. (The H_ACTIVE field is used instead.
Vertical Frame Buffer Active. This field is used only when graphics scaling is enabled.
It represents the total number of lines in the graphics frame buffer minus 1.
This field is analogous to the V_ACTIVE field in the DC_V_ACTIVE_TIMING register
(DC Memory Offset 050h[10:0]), except that this field is used only for the fetching and
rendering of pixel data, not the display timings. When graphics scaling is disabled, this
field is not used. (The V_ACTIVE field is used instead.)
Description
Reserved.
X Offset. This field represents the X pixel offset within the 64x64 cursor pattern at which
the displayed portion of the cursor is to begin. Normally, this value is set to zero to dis-
play the entire cursor pattern, but for cursors for which the “hot spot” is not at the left
edge of the pattern, it may be necessary to display the right-most pixels of the cursor only
as the cursor moves close to the left edge of the display.
Cursor X. This field represents the X coordinate of the pixel at which the upper left cor-
ner of the cursor is to be displayed. This value is referenced to the screen origin (0,0),
which is the pixel in the upper left corner of the screen.
DC_FB_ACTIVE Bit Descriptions
DC_CURSOR_X Bit Descriptions
DC_CURSOR_X Register Map
X_OFFSET
Display Controller Register Descriptions
AMD Geode™ LX Processors Data Book
9
8
7
CURSOR_X
6
5
4
3
2
1
0