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CCS/TMS320C5517: Endless "waiting for usb enumeration" when launch target configuration

Part Number: TMS320C5517
Other Parts Discussed in Thread: TIDEP-0077

Tool/software: Code Composer Studio

1. EVM: Spectrum TMS320C5517 EVM (ASSY 514660) REV F.

2. CCS 6.20.

3. I just followed document: TI Designs: TIDEP-0077 Audio Pre-processing System Reference Design for Voice-Based Applications Using C5517.

4. I imported target configuration of "C5517EVM_Onboard_Emulator.ccxml" from c55_csl_3.08.

5. when I try to launch this imported target, I got a endless "waiting for usb enumeration" .

6. OS: windows 7 flagship 64bit.

7. screen shots for ccs and device manager attached.

My Questions:

1. Does CCS 6.20 and C5517 EVM requires a dedicate windows version and platfrom (32bit/64bit)?

2. is there any windows usb driver for my "usb onboard emulator" of this C5517 EVM board from Spectrum?

Thank you very much and best regards.