Part Number: TMS320VC5509A
Hi,
I received a Modular EVM Motherboard(MMB0 REV D) module for some DAC application. After installing all the required drivers, I was able to access the MMBO module and DAC board somehow.
But from couple of days, when I connect the USB to the board , the USB is not getting enumerated and device is not shown in the device manager.
After debugging the board, observed that the voltage level on DP line of USB was low though there was a pull up resistor connected from PU pin of the DSP tms320vc5509apge and DP line. When I refered the datasheet of tms320vc5509apge, it was given that PU pin will be connected to USBVDD supply internally through a software controllable switch CONN bi tog USBCTL register, but I am not sure of the value present in that particular bit also I don't have any other interface to program the registers in DSP. Just to check if the USB works good with pull up, I connected external pull up on the PUR that is connected on DP line, then USB device enumerated but was shown as unknown device by PC as the device was not able to send K chirp data.
Can someone please help me in finding what may be the reason why I am not getting pull up on DP line from the DSP ?, or someone please suggest some way to program DSP in the MMB0 board other than using USB.
Thanks,
MADHU.