8.1 QSPI read with XDMA limited performance
The bandwidth achievable in QSPI read when using the XDMA is limited due to burst accesses split into single accesses.
For example, in Quad mode at 100 MHz, the maximum achievable bandwidth is 19 MB/s instead of 46 MB/s.
Work Around
Use the CPU with MMU and caches enabled to reach 37 MB/s in the same conditions as above.
Affected Silicon Revisions
|
A0 A0-D1G A0-D2G |
A1 A1-D1G A1-D2G A1-D5M | ||||||
| X | X |