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adding 3rd USB device controller port to LPC54608

Question asked by bob belmont on Jul 26, 2018
Latest reply on Jul 31, 2018 by bob belmont

I would like to add a 3rd USB device controller port to my MCU. I looked for parts and ended up with two solutions:

 

a) use FT120 which interfaces to MCU via parallel bus (http://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT120.pdf)

 

b)Use MAX4320E. This is SPI to USB  (https://www.maximintegrated.com/en/products/interface/controllers-expanders/MAX3420E.html)

 

is option(a) doable ? This means configuring the EMC to interface with FT120. I am worried about not getting EMC configured right. Option (b) looks simpler but I am worried about achieving lower USB bandwidth than If I was going with option (a) 

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