AM5718: Raw video stream input to DSP

tokyo-engineer

Part Number: AM5718

i have an 8 bit compressed digital video broadcast stream accompanied by 2 control bits, synchronous to a 27MHz pixel clock.

How can i store this data to DSP memory for decoding?

1. Can I use the Video Input Port ?

(i checked Chapter 9 of the technical manual but it seems raw un-formatted video input is not supported. i.e. since the video is compressed, there are no framing signals associated with it.)

2. Ignoring the fact that this is compressed video data, what other method could be used for just storing a data-stream in memory?

any feedback will be appreciated.

over 8 years ago

0 Biser Gatchev-XID over 8 years ago

TI__Guru**** 393215 points

Hi,

What software are you using on ARM, resp. on DSP?

0 tokyo-engineer over 8 years ago in reply to Biser Gatchev-XID

Prodigy 30 points

planning to use Linux.

0 Manisha Agrawal over 8 years ago in reply to tokyo-engineer

TI__Mastermind 22946 points

Please look at this wiki page to understand if VIP can be used to bring your compressed data in.

0 tokyo-engineer over 8 years ago in reply to Manisha Agrawal

Prodigy 30 points

thanks manisha.

it seems discrete sync signals are still needed to use VPDMA to send data to memory. So what i will have to do is generate a pseudo video frame and encapsulate my compressed data within (as pseudo pixel data) allowing it to be sent to memory.

good, need to add an fpga but problem solved.

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AM5718: Raw video stream input to DSP