I don't know the capacitance, but have achieved 62 Mbit/s SPI into the CYW43439, see https://iosoft.blog/picowi_part1
However, the raw SPI data rate is quite deceptive, because of the delays associated with the wireless transmission and reception, and (most importantly) the delays due to higher-level protocols such as TCP.
I managed to get 10 Mbit/s maximum on a TCP connection, but that was effectively uni-directional (serving large web page), and without any transmission errors; as soon as the sender needs to retransmit a data block, the throughput plummets, so beware congested airwaves!
However, the raw SPI data rate is quite deceptive, because of the delays associated with the wireless transmission and reception, and (most importantly) the delays due to higher-level protocols such as TCP.
I managed to get 10 Mbit/s maximum on a TCP connection, but that was effectively uni-directional (serving large web page), and without any transmission errors; as soon as the sender needs to retransmit a data block, the throughput plummets, so beware congested airwaves!
Statistics: Posted by jayben — Fri Nov 29, 2024 1:41 pm