Customer uses the C6727 and says that his read time from external memory is 10 MHz where read time from C6713 is 50 MHz. He wants to know if there might be a way he can speed up the read time on C6727
They are accessing non-cacheable memory. In the C6713 the processor reads what looks like a cache line so it generates one read command followed by reads every clock cycle for N number of cycles. In the C6727 it generates a read command, reads a words, generates another read command followed by a read, etc. Each time a new read command is issued, there is the bus turn around and latency that slows down the transaction.