I recently purchased a new board (ML403) and was happy that it came with the USB Programming cable along side with it. Unfortunately I was unable to get it to communicate with the board by using either version 13.1 or 13.4 Xilinx toolchain. My Windows 7 machine found the device drivers just fine (and yes I have admin rights), but the Xilinx tool impact wasn’t able to connect to it. I’ve tried downgrading the drivers a few times by using the site Xilinx Configuration Hardware still to no avail. Also, didn’t find much information on the “write cmdbuffer failed 20000015.” error that I kept getting in impact. Maybe someone else has had this issue before?
I found a few Xilinx knowledge base answers that may help some other people out there with similar problems. None of which fixed my issue
AR #20429
AR #41442
AR #44397
AR #31931
One of my impact log files looked like the following:
iMPACT log file Started on Mon Mar 26 22:34:56 2012
Welcome to iMPACT
iMPACT Version: 13.1
// *** BATCH CMD : setMode -bs
Enumerating cables. Please wait.
PROGRESS_START - Starting Operation.
Connecting to cable (Usb Port - USB21).
Checking cable driver.
Driver file xusbdfwu.sys found.
Driver version: src=1027, dest=1027.
Driver windrvr6.sys version = 10.2.1.0. WinDriver v10.21 Jungo (c) 1997 - 2010 Build Date: Aug 31 2010 x86_64 64bit SYS14:14:44, version = 1021.
Downloading C:/Xilinx/13.1/ISE_DS/ISE/data/xusbdfwu.hex.
Downloaded firmware version = 1100.
ESN not available for this cable.
=======================================================
Found cable - > write cmdbuffer failed 20000015.
ESN not available for this cable.
No ESN.
=======================================================
write cmdbuffer failed 20000015.
Connecting to cable (Usb Port - USB22).
Checking cable driver.
Driver file xusbdfwu.sys found.
Driver version: src=1027, dest=1027.
Driver windrvr6.sys version = 10.2.1.0. WinDriver v10.21 Jungo (c) 1997 - 2010 Build Date: Aug 31 2010 x86_64 64bit SYS14:14:44, version = 1021.
PROGRESS_END - End Operation.
Elapsed time = 13 sec.
// *** BATCH CMD : setCable -port usb21 -baud -1
Connecting to cable (Usb Port - USB21).
Checking cable driver.
Driver file xusbdfwu.sys found.
Driver version: src=1027, dest=1027.
Driver windrvr6.sys version = 10.2.1.0. WinDriver v10.21 Jungo (c) 1997 - 2010 Build Date: Aug 31 2010 x86_64 64bit SYS14:14:44, version = 1021.
Cable PID = 0008.
Max current requested during enumeration is 280 mA.
write cmdbuffer failed 20000015.
Loopback test failed. Sent character = 00, Received character = 0C.
Cable connection failed.





