What is the current DDR bandwidth on BF54x? Do we have any benchmark data showing performance metrics?
The theoretical bandwidth is as specified in the BF54x hardware reference manual - http://www.analog.com/static/imported-files/processor_manuals/bf54x_phwr_vol-1.pdf . Refer to Table 2-6, Table 2-7 for DMAC0 and DMAC1 bandwidth and Pg 2-28 for the Core bandwidth numbers.
Real bandwidth utilizations varies on an application basis but here are some raw achievable throughput for DMA and Core access. Each of these 4 benchmarks are run seperately and there is nothing else going on in the system when running these individual benchmarks.
The Core read/write access time is benchmarked using a tight lsetup loop.
For e.g. the write access is measured using the following loop is benchmarked:
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