Information about USB JTAG

[vaf20]

USB JTAG

hi all freinds
How could program a FPGA or CPLD via USB port to increase download rate?
is there anything called "JTAG USB"?
Regards

 

[Ace-X]

USB JTAG

Check Xilinx MultiLinx or cheap USB JTAG cable from Digilent (http://www.digilentinc.com/Products/Components.cfm)

 

[Memphis]

USB JTAG

Does the usb jtag cable also available for altera FPGA chips??

 

[mami_hacky]

Re: USB JTAG

By considering the price, spped advantage of USB is not so high. Also XILINX has more attention on Parallel Cable 4. So I suggest it is better than USB Multilinx

 

[vaf20]

Re: USB JTAG

hi again
i would like to build one so i think there is a USB controller such as cypress 68013 and a s/w interface to download through USB on FPGA's JTAG .
but i know NOTHING about s/w interface?
Regards

 

[gold_kiss]

Re: USB JTAG

Hi All,

Can anyone give me schematic and software for the same....would be of great help.
Thanks,
Gold_kiss

 

[bamdad]

Re: USB JTAG

In programming the FPGA config memory, for faster speeds, you have to use parallel programming modes, which would be faster than jtag by orders of magnitude, for example, you can check the programming time specified in various modes, as stated in xilinx datasheets.

 

[neuneu]

Re: USB JTAG

you can refer to
http://www.ixo.de/info/usb_jtag,
it is a usb blaster for altera, think it helpful to you!