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DMA to/from eLB Devices (UPM Mode) stucks

Question asked by Tilman on Nov 23, 2014
Latest reply on Nov 30, 2014 by Tilman


we are running a Hardware which is similar to the P1020RDB-PD and would like to transfer data from an external SRam Device to/from the CPU SDRam Memory.

If I setup a DMA with length of 16Bytes or less, anything works fine. If I use more then 16 Bytes, the DMA Controller states an Error (bit TE of DMA_SRn Register set).

The external Device is attached to the eLB configured in UPM Mode.

Thks for your time.