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Discussion Groups | Analog Devices DSPs | 218x Latchup?
Technical discussions related to Analog Devices DSPs (including Blackfin, TigerSHARC, SHARC and ADSP-21xx DSPs).
218x Latchup? - duhlynn - Jul 26 11:42:00 2005
Anyone experienced latchup issues with the 218x series (ADSP2185M in
particular)?
Thanks
Tim Dahlin
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Re: 218x Latchup? - Al Clark - Jul 26 12:25:00 2005
At 10:42 AM 7/26/2005, you wrote:
>Anyone experienced latchup issues with the 218x series (ADSP2185M in
>particular)?
>
>Thanks
>Tim Dahlin
Only once in numerous designs.
The best I can recall it was ADSP-2184L (I have never seen a 218xM problem)
I was writing to a PLD with relatively long lines using the WR line. This
caused a Flag to fail on the other side of the DSP.
The solution was a small series R in the Write line (or a 10pF termination
at the PLD).
Any part can have a problem. This is almost always due to layout or design
flaws and not the chip.
If you can be more specific, I may have better ideas.
Al Clark
Danville Signal Processing, Inc.
--------------------------------------------------------------------
Purveyors of Fine DSP Hardware and other Cool Stuff
Available at http://www.danvillesignal.com
(You need to be a member of adsp -- send a blank email to adsp-subscribe@yahoogroups.com )
>Anyone experienced latchup issues with the 218x series (ADSP2185M in
>particular)?
>
>Thanks
>Tim Dahlin
Only once in numerous designs.
The best I can recall it was ADSP-2184L (I have never seen a 218xM problem)
I was writing to a PLD with relatively long lines using the WR line. This
caused a Flag to fail on the other side of the DSP.
The solution was a small series R in the Write line (or a 10pF termination
at the PLD).
Any part can have a problem. This is almost always due to layout or design
flaws and not the chip.
If you can be more specific, I may have better ideas.
Al Clark
Danville Signal Processing, Inc.
--------------------------------------------------------------------
Purveyors of Fine DSP Hardware and other Cool Stuff
Available at http://www.danvillesignal.com
(You need to be a member of adsp -- send a blank email to adsp-subscribe@yahoogroups.com )