Preliminary
System Memory Map
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•
Each video capture port channel supports chroma down sampling (422 to 420) for any non-multiplexed
input data. The chroma down sampling for multiplexed streams is done as memory to memory
operations outside of HDVPSS on an individual frame data.
•
Deinterlacing is not supported in-line during capture.
•
Ancillary data capture is supported for VANC/VBI data (ancillary data within the interval between
SAV-EAV sequences during vertical blanking period) on all input channels. HANC data capture is NOT
supported. Decoding of the Ancillary data should be handled by the software.
•
Graphics overlay over incoming bitstream is NOT supported.
•
Noise Reduction on the incoming video is supported as a separate memory to memory operation
within the HDVPSS.
•
One of the 8-bit channels in each video port may be used as a video write back path for transcoding
applications. This channel may also use the color space conversion and/or the scaler. It is up to the
application to avoid resource contention.
Other Features
•
The HDVPSS supports 2 secondary video input sources in 420 tiled format used for memory-memory
operations (utilizing a scaler and chroma downsampler within one of the VIN ports in a memory to
memory configuration) with one of these ports capable of driving video to the SD output display. For
display output, there is no processing performed, i.e, no scaler or deinterlacing.
•
Only 1 of the 2 additional video input sources can directly drive the SD display. For display output,
there is no processing performed, ie, no scaler or deinterlacing.
•
The HDVPSS supports video data write back paths for following:
–
Scaled video from aux video channel saved as 422 video.
–
Scaled video from main video channel saved as 422 video.
–
Independently scaled video from main deinterlacer output (memory-to-memory scaling
application) – saved as a 420 video using the scaler and chroma_downsampler resources in one of
the VIN ports.
–
Independently scaled video from aux deinterlacer output (memory-to-memory scaling application) –
saved as a 420 video using the scaler and chroma_downsampler resources in the other VIN port.
This path is shared with the Secondary Inpput Path video input source.
–
Independently scaled video from the Secondary-1 and Secondary-2 video input source saved as a
420 video using a scaler and chroma downsampler resource in one of the VIN ports. These video
input sources can be 422 or 420 tiled input data (same as input for main and auxiliary inputs).
Secondary-1 and Secondary-2 video input source share the VIN write-back paths of the primary
and auxiliary deinterlacers.
–
Write back of the scaled video from main, aux or additional video input source video channels
supports both tightly (1 frame per 1 display frame period) and loosely (many frames per 1 display
frame period) coupled to the display frame period. All other write backs are tightly coupled
•
The HDVPSS includes a highly programmable and bandwidth efficient DMA controller to support the
worst case bandwidth application.
•
The HDVPSS performs compression and decompression on the TNR data from the main DEI and
private data from the auxiliary DEI to reduce overall bandwidth.
1.7
System Memory Map
For detailed specification on memory mapping, see the device-specific data manual.
170
Chip Level Resources
SPRUGX9 – 15 April 2011
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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