ALXD800EEXJCVD C3 AMD (ADVANCED MICRO DEVICES), ALXD800EEXJCVD C3 Datasheet - Page 444
ALXD800EEXJCVD C3
Manufacturer Part Number
ALXD800EEXJCVD C3
Description
Manufacturer
AMD (ADVANCED MICRO DEVICES)
Datasheet
1.ALXD800EEXJCVD_C3.pdf
(680 pages)
Specifications of ALXD800EEXJCVD C3
Operating Temperature (min)
0C
Operating Temperature (max)
85C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Lead Free Status / RoHS Status
Compliant
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6.8.3.31 Alpha Window 3 X Position (A3X)
VP Memory Offset 100h
Type
Reset Value
Note 1. H_TOTAL and H_SYNC_END are values programmed in the Display Controller module registers.
444
63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
63:28
27:16
15:12
15:8
11:0
Bit
7:0
Bit
16
RSVD
The value of (H_TOTAL – H_SYNC_END) is sometimes referred to as “horizontal back porch.”
Name
ALPHA2_WIN_
EN
ALPHA2_INC
ALPHA2_MUL
Name
RSVD (RO)
ALPHA3_X_
END
RSVD (RO)
ALPHA3_X_
START
R/W
00000000_00000000h
33234H
ALPHA3_X_END
Description
Alpha Window 2 Enable. Enable bit for alpha window 2.
0: Disable alpha window 2.
1: Enable alpha window 2.
Alpha Window 2 Increment. Specifies the alpha value increment/decrement. This is a
signed 8-bit value that is added to the alpha value for each frame. The MSB (bit 15) indi-
cates the sign (i.e., increment or decrement). When this value reaches either the maxi-
mum or the minimum alpha value (255 or 0) it keeps that value (i.e., it is not incremented/
decremented) until it is reloaded via LOAD_ALPHA (bit 17).
Alpha Window 2 Value. Specifies the alpha value to be used for this window.
Description
Reserved (Read Only). Reads back as 0.
Alpha Window 3 X End. Indicates the horizontal end position of alpha window 3. This
value is calculated according to the following formula:
Value = Desired screen position + (H_TOTAL – H_SYNC_END) – 1. (Note 1)
Reserved (Read Only). Reads back as 0.
Alpha Window 3 X Start. Indicates the horizontal start position of alpha window 3. This
value is calculated according to the following formula:
Value = Desired screen position + (H_TOTAL – H_SYNC_END) – 2. (Note 1)
A2T Bit Descriptions (Continued)
A3X Bit Descriptions
A3X Register Map
RSVD
RSVD
AMD Geode™ LX Processors Data Book
Video Processor Register Descriptions
9
8
ALPHA3_X_START
7
6
5
4
3
2
1
0
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