SPRUIZ1B July 2023 – August 2024 TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1
In addition to the pipeline there are a few other behaviors of the DMA that affect the total throughput:
For example, to transfer 128 16-bit words from GS0 RAM to GS3 RAM, a channel can be configured to transfer 8 bursts of 16 words/burst. This gives:
8 bursts * [(3 cycles/word * 16 words/burst) + 1] = 392 cycles |
If instead the channel were configured to transfer the same amount of data 32 bits at a time (the word size is configured to 32 bits), the transfer can take:
8 bursts * [(3 cycles/word * 8 words/burst) + 1] = 200 cycles |
The DMA module consists of a 3-stage pipeline as shown in Figure 10-5 and Figure 10-6.