Forum Discussion
Occasional ContributorUSB blaster alternative connector
Hello,
I'm thinking about adding smaller connector to my PCB to connect USB Blaster. so there would be small PCB with 10-pin header on the top side and small SMD connector on the bottom. I'm woried about signal integrity. As far as I remember TCK frequency for USB blaster is 24MHz and it can be slowed down 6MHz but no more. This is maybe not a DDR3, but still can make a lot of troubles. Do you think it's a good idea?
Assuming, that I will work with standard 10-pin THT connector - do you recommend signal-integrity analysis if traces are shorter than 15mm?
Thank you for support.
Best regards
Hi,
The small connector means lesser pin?
I think it would be better if we could use the 5x2 header as it is required for the JTAG.
https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_usb_blstr.pdf (Page 4)
Thank You.
4 Replies
YuanLi_S_IntelRegular Contributor
Hi Lutzek,
If we have the luxury to do simulation, why not? It is much better than if we need to rebuild the board which will cost higher.
Thank You.
Bruce
lutzekHi, thank you for your answer. Do you think, that using alternate, smaller connector for JTAG is a good idea, or the interface is optimized to work with header 5x2?
- YuanLi_S_Intel
Hi,
The small connector means lesser pin?
I think it would be better if we could use the 5x2 header as it is required for the JTAG.
https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_usb_blstr.pdf (Page 4)
Thank You.
tentnerNew Contributor
Hi,
maybe this is of interest for you:
https://www.entner-electronics.com/en/eeblaster.html
We have never observed issues regarding signal integrity, to answer your question.
Regards,
Thomas
