AMD Geode SC1201 - Manual (Page 345)

AMD Geode™ SC1200/SC1201 Processor Data Book 345
Video Processor Module - Video Processor Registers - Function 4 32579B
13 GV_SEL (GV Select). Selects input video format.
0: YUV format.
1: RGB format.
Note: Mixing and blending configurations are created using bits [13, 11:9] of this register. See Table 7-2 "Valid Mixing/
Blending Configurations" on page 324.
If this bit is set to 1, EN_42X (F4BAR0+Memory Offset 00h[28]) must be programmed to 0.
12 VID_LIN_INV (Video Line Invert). When this bit is set, it allows the video window to be positioned at odd offsets with
respect to the first line. The values below are recommended if VID_Y_START (F4BAR0+Memory Offset 0Ch[10:0]) is an
odd (set to 1) or even (set to 0) number of lines from the start of the active display.
0: Even.
1: Odd.
11 CSC_FOR_GFX (RGB to YUV Color Space Converter). Determines if the input graphics stream or the mixed/blended
stream is passed through the RGB to YUV Color Space Converter (CSC).
0: The mixed/blended stream is passed through the CSC for TV support.
1: The graphics stream is passed through the CSC.
Note: Mixing and blending configurations are created using bits [13,11:9] of this register. See Table 7-2 "Valid Mixing/
Blending Configurations" on page 324.
10 CSC_FOR_VIDEO (Color Space Converter for Video). Determines whether or not the video stream from the video mod-
ule is passed through the CSC.
0: Disable. The video stream is sent "as is" to the video Mixer/Blender.
1: Enable. The video stream is passed through the CSC (for YUV to RGB conversion).
Note: Mixing and blending configurations are created using bits [13,11:9] of this register. See Table 7-2 "Valid Mixing/
Blending Configurations" on page 324.
9 VIDEO_BLEND_MODE (Video Blending Mode). Allows selection of the type of video (i.e., interlaced or progressive) used
for blending.
0: Progressive video used for blending.
1: Interlaced video used for blending.
Note: Mixing and blending configurations are created using bits [13,11:9] of this register. See Table 7-2 "Valid Mixing/
Blending Configurations" on page 324.
8 GFX_INS_VIDEO (Graphics Inside Video). This bit works in conjunction with bit COLOR_CHROMA_SEL (F4BAR0+Mem-
ory Offset 04h[20]). COLOR_CHROMA_SEL selects whether the graphics is used for color keying or the video data stream
is used for chroma keying. If COLOR_CHROMA_SEL = 0, graphics data is compared to the color key. If
COLOR_CHROMA_SEL = 1, video data is compared to the chroma key.
0: Outside the alpha windows, graphics or video is displayed depending on the result of the color key comparison.
1: Outside the alpha windows, only video is displayed (if COLOR_CHROMA_SEL = 0) or only graphics is displayed (if
COLOR_CHROMA_SEL = 1) color key comparison is not performed outside the alpha windows.
7 VID_WIN_PUSH_EN (Video Window Push Enable). Video window repositioning at an offset of 1 line below the pro-
grammed value. Facilitates line rate matching in both fields.
0: Disable. (Default)
1: Enable.
6 TOP_LINE_IN_ODD (Top Line in Odd Field). Allows selection of what field the top line is in.
0: Top line is in even field. (Default)
1: Top line is in odd field.
5 Reserved.
4 INSERT_EN (Insert Enable). When this bit is set, the odd frame is shifted with respect to the even frame.
0: No shifting occurs.
1: The odd frame is shifted according to the offset specified in bits [2:0].
3 Reserved.
2:0 OFFSET (Vertical Scaler Offset). For a non-interlaced video stream and when bob de-interlacing is used, program a value
of 100 (i.e., shift one line); otherwise, leave at 000.
Table 7-9. F4BAR0+Memory Offset: Video Processor Configuration Registers (Continued)
Bit Description