USB-to-UART bridge: protocol mapping?

Question

I was wondering how does the protocol mapping work between the USB side and the UART side when dealing with the Microchip MCP2200?

What sort of USB transfer type is used?

Thanks for any clues!

update: I found a bit more info Virtual COM port.

mjh2007 · Accepted Answer · 2010-04-19 17:27:30Z

up vote 3 down vote accepted

It looks to me like the MCP2200 is also supported as a CDC class device. In that mode bulk and isochronous transfers should also be supported.

answered Apr 19 '10 at 17:27

mjh2007
2,598634

Yes, it does support CDC. – Leon Heller Apr 19 '10 at 18:04

Leon Heller · Answer 2 · 2010-04-19 17:02:39Z

up vote 0 down vote

As it's an HID class device, it won't use bulk or isochronous transfers.

answered Apr 19 '10 at 17:02

Leon Heller
27.4k22251

2 Answers