lpcware

DMA over EMC / SGPIOs

Discussion created by lpcware Employee on Jun 15, 2016
Content originally posted in LPCWare by MaSt on Wed Aug 01 00:58:03 MST 2012
Hi,
is ist possible to DMA-transfer data from and to external S(D)RAM connected via EMC? As per User Manual Rev. 1.3 Fig. 1 there is no connection between GPDMA and EMC. I found no explicit statement of DMA support for EMC in datasheet/user manual.

Also confuses me, that SGPIO is also described as "not connected" to GPDMA in Fig. 1. But in the description of GPDMA (table 270) SGPIO14/15 are listed as possible BREQ-sources. Does anybody have more information or perhaps a practical experience with SGPIOs and DMA?
Thanks in advance.

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