I've got a new problem recently.
The settings are the same as listed in URL: https://ez.analog.com/thread/41896
dreq1 is for code dma in ; dreq0 is for image dma out .
but XTOT= 4096,YTOT=256.
In most cases,the ADV212 works ok ,but recently i've got a new code stream which contains about 2000 frames;
the adv212 always stoppes decoding in the middle of the code stream, because the signal both dreq1_n and dre0_n are keeping high ,not asserted any more.
I have tried many times,but each time the adv212 stopps decoding at the same location of the code stream;
I've analyzed this code stream . the head 0xfffffff0,the tail 0xffd9,and the jpeg head are all ok ! and the software kdu can decode the code stream succeessfully.
I dont' know why! the adv212's i/o timing shoud be ok! Are there any registers or signals indicating that the code which is being decoded has encountered an err?