Part Number: MSP430F5528
Other Parts Discussed in Thread: LDC1614EVM
Dear support,
In my prototype, I used the LDC1614EVM board (evaluation board with MSP430F5528) as design reference - the USB input and microcontroller circuit remained unchanged (24MHz XTAL, bypass capacitors, etc), minimal changes in the layout.
The BSL user guide (http://www.ti.com/lit/ug/slau319ab/slau319ab.pdf) states that empty interrupt vector invokes the BSL. However, when connecting my board to PC, no USB is added to Device Manager and MSP430 USB Firmware Upgrade Example reports "No device connected".
When I invoke the BSL by connecting MSP_PUR to VUSB, Windows immediately reports an error "Unknown USB Device (Device Descriptor Request Failed)" and "Unknown USB Device (Device Descriptor Request Failed)" is added to USB list in the Device Manager.
I am sure that my driver and cabling is correct, as it works perfectly with LDC1614EVM board with preflashed MSP430F5528.
Could you please suggest what might be the reason of the problem?
Thank you
