Hello, after the hardware-check with the "saleae pro 8" i go back to check the software/firmware/project, maybe not all of the following steps are necessary : #1 change inside the "Makefile" the "Target" from "xhra_xcore.xn" to "XUF208-128-TQ64-C10 Device...

Hello,

and the timing for 3V3, 1V0, RST :
- 3V3 @ 0.233.92s
- 1V0 @ 0.234.15s
- RST @ 0.244.99s

Best Regards Mark Duprau

Hello, implement a logic analyses over a "Saleae Logic Pro 8" : - 3V3 @ 0.211.45s - RST @ 0.222.58s - D0H @ 0.222.617.50s (D0 to High) - CS @ 0.222.617.76s - BGN @ 0.222.62s - END @ 0.227.47s - NXT @ 0.659.52s - END @ 0.664.38s - NXT @ 1.096.43s - END @ 1.101.29s - NXT @ 1.533.34s - END @ ...

Mark, 1) try to boot a simple led blinky code on your custom pcb. Does that boot from your flash and work? 2) if yes, try different usb cables that are fully loaded (4 wires) and your usb audio ip. Work? No, then apply xmos usb ip like usb cdc, usb hid to validate if any usb ip works on your pcb. 3...

Hi Mark. The cpu is strapped to boot from a QSPI flash. Respectively, the QSPI bit inside the flash must be enabled. Please confirm this important detail. Does your custom pcb offer a xtag interface? If yes, you could use a small piece of code to throw the standard SPI commands to configure the QSP...

Hello, i have the same problem like other members here, i must replace the XHRA with the XU208 on a custom board with a shema thats near 100% on XHRA reference, except two SN74CB3Q3245 there will switch the QSPI bus from XMOS to ATXMEGA if the XMOS is offline (no USB connected). I read this thread m...