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renesas / fsp

Flexible Software Package (FSP) for Renesas RA MCU Family
https://renesas.github.io/fsp/
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Changing USB clock frequency causes the USB device to no longer be recognized #271

Closed GodavarthyAravinda closed 10 months ago

GodavarthyAravinda commented 1 year ago

Issue

Certain combinations of clock source and divisors, result in USB clock frequency value drift from expected theoretical value. This causes the USB device to become unrecognizable.  Example: PLL UCLK
240MHz UCLK Div/5
192MHz UCLK Div/4

Effected MCUs: RA6M1, RA6M2 and RA6M3

Workaround

There is no workaround for this issue at this time.