On Thu, May 14, 2015 at 04:36:33PM -0500, Bin Liu wrote: > Alexandre, > > On Thu, May 14, 2015 at 4:26 PM, Alexandre Belloni > <alexandre.belloni@xxxxxxxxxxxxxxxxxx> wrote: > > On 14/05/2015 at 16:16:12 -0500, Bin Liu wrote : > >> I think I found the root cause of the problem: board design issue - I > >> bet the custom board has too much cap on VBUS line. It should be < > >> 10uF. > >> > > > > We have a custom board that exhibits the issue but it only has a 100nF > > cap on VBUS. > > Have you measured the VBUS discharging? Is there any way to share your > schematics? Alexandre, any further comments ? -- balbi
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