lpcware

Does the LPC4357 need a crystal for USB DFU?

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by suckfish on Sat Sep 22 22:10:56 MST 2012
Hi,

I'm bringing up a board with a LPC4357 on it.  Does it need a crystal for the DFU over USB0?  (The docs don't say so, but high-speed USB devices normally have a crystal?)

On my board - Strapping for boot ISP via USART3 works fine.  Strapping for boot DFU via USB0 doesn't seem to work (the host PC is completely unaware of the device)... So I'm crossing my fingers that it's a simple problem not a toasted board/chip...

Ralph.

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