Is there a SPI protocol analyzer available for a 16800 series logic analyzer?
I presently have access to two logic analyzers:
16823A
16804A
I have a 50MHz SPI bus to troubleshoot.
The high sample rate and acquisition buffer depth of these logic analyzers would be great if I can find a SPI decoder to add.
PJ
There used to be one available from Advanced Logical Designs (www.ald.com), but it's apparently not there any more. There are standalone products from several companies that might be useful.
I believe ald still has one, at least it's listed in the price list: Price List – ALD
It says you need to purchase the ALD-RS232 concurrently with it though. I just thought you guys might want to know.
I had forgotten about that. The SPI solution is an add-on to their RS-232 solution. You might want to check with ALD about maximum speed. I think that there's a 10 or 20 MHz speed limit on their product.
As I had said, there are multiple companies that make stand-alone SPI analyzers. Generally, they will be less expensive, support higher speeds, and are USB-based. That would be a better solution than trying to use an LA.
Al, could you recommend one of these stand-alone SPI analyzers? I have an IC that is some sort of SPI type chip. It says it can be used in multiple modes, single SPI, dual, and quad SPI mode. I'd like to look at the traffic.
Sorry, but no. I have never used on of the stand-alone analyzers. I, of course, have access to Keysight scopes with support for a lot of different serial links built in.
Oh, duh! Since we've had the baby, my wife and I don't get much sleep at all and because of it, I think my mind has officially broken! It just doesn't work right anymore! of course you use the Keysight products, working for Keysight and everything!!!! Boy do I feel sheepish!
I'd like to add that I reached out to ALD and asked about the link for the SPI decoder. This is the response I got from them about it:
Yes, the link is broken. My IT guy is working on it now and I expect to have it back up in a day or two.
We are no longer actively marketing these preprocessors, but I do have a few in stock. I'll let you know when the site is back up and then you can let me know if you are interested.
So it seems they still have some of those SPI decoders available. Maybe one of those is what you'd like to purchase?
There used to be one available from Advanced Logical Designs (www.ald.com), but it's apparently not there any more. There are standalone products from several companies that might be useful.