LSI Logic Confidential
11-3
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
Figure 11.2 Video Output Channel Data Flow
The video input channel capture window data can be inserted into the
video channel output, to support PIP where the input and output timing
is the same. This allows DoMiNos to be daisy chained from video out to
video in to support arbitrary numbers of PIP channels. Double buffered
luma and chroma buffers are used to hold the output values.
For DoMiNo, the maximum output rate is 74.25 MHz (smpte 260m). The
maximum OSD pixel rate with flicker filtering and 32-bit pixels is
37.125 MHz. The DMN-8600 output values are optionally passed through
an interpolating 4-tap, 8-phase horizontal filter.
The video output channel can convert from 4:2:0 to 4:2:2 on the fly using
a 2-tap field or frame filter with software specified coefficients. The video
input channel can also perform on-the-fly color correction with software
specified coefficients. The video output channel supports a separate PIP
video layer and a separate OSD/graphics overlay with 4, 8, 16 or 32-bit
pixel formats and optional two tap flicker filter.
SDRAM
Primary/
Secondary
OSD Buffers
R, G, B,
Alpha
Lookup
Flicker Filter/
OSD Blend/
Sq Pixel Scale
RGB
→
YUV
Conversion
OSD Mix
SDRAM
Luma and
Chroma
Buffers
Vertical Chroma
Interpolation
Filter
YUV
→
RGB
Conversion
Color
Correction
Horizontal
Filter
Cb
Cr
Y
SDRAM
Luma and
Chroma Buffers
PIPData
RLE Decode
Decoded
RLE Buffer
SDRAM
PixDat and
PixCtl Buffers
SDRAM
Содержание DMN-8600
Страница 14: ...LSI Logic Confidential xiv Contents Copyright 2001 2002 by LSI Logic Corporation All rights reserved ...
Страница 18: ...LSI Logic Confidential xviii Copyright 2001 2002 by LSI Logic Corporation All rights reserved ...
Страница 64: ...LSI Logic Confidential 7 6 Memory Mapping Copyright 2001 2002 by LSI Logic Corporation All rights reserved ...