Search found 5 matches

by mcs5
Wed Sep 06, 2017 4:16 pm
Forum: Development Tools and Programming
Topic: XTAG-3 connection problems
Replies: 11
Views: 9520

Re: XTAG-3 connection problems

I added the pull-up, and now I get this:
Available XMOS Devices
----------------------

  ID    Name                    Adapter ID      Devices
  --    ----                    ----------      -------
  0     XMOS XTAG-3             Ib857mvh        O[0]
- a definite improvement!
by mcs5
Tue Sep 05, 2017 2:26 pm
Forum: Development Tools and Programming
Topic: XTAG-3 connection problems
Replies: 11
Views: 9520

Re: XTAG-3 connection problems

1) ADM1085 is an open drain output. For this reason, you must apply an external pull-up resistor onto pin 4 of this component to define the weak high. Apply a 10k to +3v3 here. XMOS uses the same value in their ref designs. Without this pull-up, this output pin of the voltage supervisor will be hig...
by mcs5
Tue Sep 05, 2017 2:34 am
Forum: Development Tools and Programming
Topic: XTAG-3 connection problems
Replies: 11
Views: 9520

Re: XTAG-3 connection problems

The XSYS reset line controls one input of the AND gate - so I don't think there should be any fighting?

And yes, it is a 74AHC1G08. 73 is my code for connected to the +3 supply rather than VCC.
by mcs5
Tue Sep 05, 2017 1:18 am
Forum: Development Tools and Programming
Topic: XTAG-3 connection problems
Replies: 11
Views: 9520

Re: XTAG-3 connection problems

Hi. 1) Try different USB ports? USB 2.0 ports may have better results than USB 3.0 ports but do test all the USB ports on your box. The computer I'm using only has USB 2.0 ports - but I will try the other two as well. 2) Which OS is being used for this testing? XP - I can try using Win 7 at work in...
by mcs5
Mon Sep 04, 2017 6:27 pm
Forum: Development Tools and Programming
Topic: XTAG-3 connection problems
Replies: 11
Views: 9520

XTAG-3 connection problems

I am trying to connect to a board using the XU216-512-TQ128 with the XTAG-3 adapter - but without much luck... The JTAG pins are connected to the xSYS header, as described in the datasheet. Power and clock is provided to the chip. Is anything else needed for the connection to work? This is what I ge...