Pages: [1]   Go Down
Author Topic: JTAG & ISP over ~2m cables  (Read 337 times)
0 Members and 1 Guest are viewing this topic.
Offline Offline
God Member
Karma: 1
Posts: 530
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Hi all,

I've been working on a board for nearing 6 months now, that will ultimately be embedded away and hard to get to for me - but, I'd still like the option of having the ISP & JTAG lines accesible over a cable with cable distances of roughly 2 meters.

What are the likely challenges / issues with this? Seems JTAG themselves recommended very short cables

I've heard something about increasing the signal strength using a buffer, but I can't say I'm entirely sure I know what that means?


SF Bay Area (USA)
Offline Offline
Tesla Member
Karma: 137
Posts: 6805
Strongly opinionated, but not official!
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

It's not likely to work very well.  You'd be much better off running something that's intended to go 2+ meters (USB or "real" rs232 serial) over the long like, and putting a converter near your board.

Pages: [1]   Go Up
Jump to: