I'm developing a custom board with ATSAME70N21A.
Board has standard USB device connector and both 12MHz and 32kHz crystals.
First I tested ROM bootloader. Device connection is detected by host but no other
I modified SAMV71 USB CDC example to compile for SAME70 and flashed by SWD.
Same result as with bootloader, host detects USB FS pull up and thats all.
As last try I used USB host moues example. If I connect 1k5 pull-up resistor to HSDP pin,
I see SOF packets on HSDP by an oscilloscope. Unfortunately there is no inverted signal on HSDM pin.
Datasheet errata reads:
Does 100-pin SAME70N21 have a similar issue?Issue: USB is not working in 64-pin packages
USB does not work in 64-pin package options for the following devices: