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i am starter of dsp 6711. i am reading the peripharal user guid. in the EDMA part(6.15), i can't undertan chaining EDMA. what does mean that? ,what application is it used? |
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what does mean that chaining EDMA?
Started by ●August 21, 2003
Reply by ●August 21, 20032003-08-21
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Refer to spru234 [july 2003] -available at ti.com
TMS320C6000 DSP Enhanced Direct Memory Access (EDMA) Controller Reference
Guide
EDMA chaining and linking are two very powerful features. Use EDMA chaining
to cause a "chain reaction" from a single event. For example, when a
single interrupt occurs, you may want to perform a DMA xfer one one channel from
an I/O device and chain that xfer to another channel that will copy a processed
buffer from internal memory to external memory.
Also, a note to all EDMA users. The DSP cache has no knowledge of
EDMA xfers - they can create cache coherency
problems!! The programmer must manage these [TI has at
least one app note on this].
mikedunn
chunrang <c...@yahoo.co.kr> wrote: i am starter of dsp 6711. i am reading the peripharal user guid. |
