Hi I am using ADSP 21489 processor with 8-bit parallel Flash memory.How many cycles will it take to read one 32-bit word from Flash memory In case of External port DMA access(8-bit packed mode)?
Wait states 31.
Access time 70 ns.
The ADSP-21489 processor's AMI interface runs at the speed of the SDCLK. The minimum wait state for the AMI access is 2 SDCLK cycles with which the AMI can run up to a maximum of SDCLK/3. For one 32-bit word it needs 4 accesses and it should be ((SDCLK/3) * 4). In case of 31 wait states it will be ((SDCLK/32)*4).
Hope this answers your question.
Retrieving data ...