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USB Superspeed Peripherals

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I test my CYUSB3014 PCB Board, and use JTAG Port to debug, just like CYUSB3KIT-003 EZ-USB® FX3 SuperSpeed Explorer Kit. I have another CY7C65215 Board configure SCB1 as JTAG mode. My CYUSB3014 Board and CY7C65215 Board connected use TDI, TDO, TCK, TMS, TRST_N, GND.


When I use the method recommended in the CYUSB3KIT-003 user guide. The first step, Eclipse run the external tools, and give bellow message. It seem OK.




Open On-Chip Debugger 0.8.0 (2014-12-03-15:43)


Licensed under GNU GPL v2


For bug reports, read


Warn : Adapter driver 'cy7c65215' did not declare which transports it allows; assuming legacy JTAG-only


Info : only one transport option; autoselect 'jtag'


adapter_nsrst_delay: 200


jtag_ntrst_delay: 200


adapter speed: 1000 kHz


trst_and_srst srst_pulls_trst srst_gates_jtag trst_push_pull srst_open_drain connect_deassert_srst


RCLK - adaptive


adapter speed: 1000 kHz


Info : clock speed 1000 kHz


Info : JTAG tap: fx3.cpu tap/device found: 0x07926069 (mfg: 0x034, part: 0x7926, ver: 0x0)


Info : Embedded ICE version 6


Info : fx3.cpu: hardware has 2 breakpoint/watchpoint units




But when I debug the project, it’s not stable. Sometimes, it report failed load; Sometimes, it go into the debug mode,the first three pictures are the debug mode capture. But when do Resume, it will report Target request failed as the fourth capture.


But when I use CYUSB3KIT-003, it works fine.


I check the connection between CYUSB3014 and CY7C65215, and Eclipse configure, and CY7C65215 configure. It seem all good.


Who can tell me why?

1 Reply
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Please contact Cypress Tech Support regarding this as this requires more details debugging.




- Madhu Sudhan