[En-Nut-Discussion] USB support?

[ethernut at pjelliot.com]

Hello danny,

Tuesday, March 18, 2003, 1:38:30 AM, you wrote:

dc> Does any idea about Ethernut + USB controller?
dc> Atmel has AVR+USB controller, but its flash is 64K only. so I want to use Mega128 + USB.

Check out the FDTI FT245BM USB FIFO chip at http://www.ftdichip.com/

This uses 8 data lines and a couple of status lines to create a byte
wide stream of data between the micro and the host PC. It can hit 3MB
per second. There are a number of manufacturers making small chip
24-pin chip sized modules using this chip such as DLPDesign
(www.dlpdesign.com).

Using this module (or implementing it on another PCB) would only
require a small amount off address decoding and a couple of discrete
inputs to check the FIFO status lines.

Hope this is of help,

Peter