SC1200UFH-266 AMD (ADVANCED MICRO DEVICES), SC1200UFH-266 Datasheet - Page 349
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SC1200UFH-266
Manufacturer Part Number
SC1200UFH-266
Description
Manufacturer
AMD (ADVANCED MICRO DEVICES)
Datasheet
1.SC1200UFH-266.pdf
(443 pages)
Specifications of SC1200UFH-266
Operating Temperature (min)
0C
Operating Temperature (max)
85C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Lead Free Status / Rohs Status
Not Compliant
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Video Processor Module - Video Processor Registers - Function 4
AMD Geode™ SC1200/SC1201 Processor Data Book
Offset 88h-8Bh
Offset 8Ch-8Fh
Offset 90h-93h
Offset 94h-97h
Alpha values may be automatically incremented/decremented for successive frames. This register can be used to read the alpha values
that are being used in the current frame.
Offset 98h-3FFh
Offset 400h-403h
Selects various Video Processor modes.
31:25
31:18
31:28
27:16
15:11
31:24
23:16
23:0
15:8
10:0
15:8
Bit
7:0
7:0
24
17
16
31
Table 7-9. F4BAR0+Memory Offset: Video Processor Configuration Registers (Continued)
Description
Reserved.
ALPHA3_COLOR_REG_EN (Alpha Window 3 Color Register Enable). Enable bit for the color key matching in Alpha
Window 3.
0: Disable. Where there is a color key match, graphics and video are alpha-blended.
1: Enable. If this bit is enabled and the alpha window is enabled, then where there is a color key match, the color value (in
ALPHA3_COLOR_REG (Alpha Window 3 Color Register). Specifies the color to be displayed inside Alpha Window 3
when there is a color key match in the alpha window. This is an RGB value (for RGB blending) or a YUV value (for YUV
blending). In Interlaced YUV blending mode, Y/2 value should be used.
This color is only displayed if the alpha window is enabled and the bit 24 (ALPHA3_COLOR_REG_EN) is enabled.
Reserved.
LOAD_ALPHA (Load Alpha Value). (Write Only) When set to 1, this bit causes the Video Processor to load the alpha
value (in bits [7:0], ALPHA3_VAL) at the start of the next frame.
ALPHA3_WIN_EN (Alpha Window 3 Enable). Enable bit for Alpha Window 3.
0: Disable Alpha Window 3.
1: Enable Alpha Window 3.
Valid only if video window is enabled (F4BAR0+Memory Offset 00h[0] = 1)
ALPHA3_INCR (Alpha Window 3 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) indicates the sign (i.e., increment or decrement). When
this value reaches either the maximum or the minimum alpha value (255 or 0) it keeps that value (i.e., it is not incremented/
decremented) until it is reloaded via bit 17 (LOAD_ALPHA).
ALPHA3_VAL (Alpha Window 3 Value). Specifies the alpha value to be used for this window.
Reserved. Set to 0.
VIDEO_X_REQ (Video Horizontal Request). Determines the horizontal (pixel) location at which to start requesting video
data out of the video FIFO. This value is calculated according to the following formula:
Value = Desired screen position + (H_TOTAL – H_SYNC_END) – 2.
Reserved.
VIDEO_Y_REQ (Video Vertical Request). Determines the line number at which to start requesting video data out of the
video FIFO. This value is calculated according to the following formula:
Value = Desired screen position + (V_TOTAL – V_SYNC_END) + 1.
Reserved.
ALPHA3_VAL (Value for Alpha Window 3).
ALPHA2_VAL (Value for Alpha Window 2).
ALPHA1_VAL (Value for Alpha Window 1).
Video FIFO Underflow (Empty).
0: No underflow has occurred.
1: Underflow has occurred.
Write 1 to reset this bit.
bits [23:0], ALPHA3_COLOR_REG) is displayed.
Video Processor Display Mode Register (R/W)
Alpha Window 3 Control Register (R/W)
Alpha Window 3 Color Register (R/W)
Video Request Register (R/W)
Alpha Watch Register (RO)
Reserved
32579B
Reset Value: 001B0017h
Reset Value: 00000000h
Reset Value: 00000000h
Reset Value: 00000000h
Reset Value: 00000000h
349
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