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Which logic analyzer for FPGA work up to 300-400 Mhz
Thomas:
--- Quote from: markone on January 07, 2023, 09:50:41 am ---I was not aware of this device, it looks quite capable for the price, does its windows application show captured data in real time fashion or you have to wait the end of recording phase ?
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It operates in the normal capture-process-display manner, with "Auto Run" or "Run Once" options on separate buttons. This can be fast or slow depending on sample speed, memory depth, number of signals and decoders, see under Performance section here:
https://tech-tools.com/digiview-sw.html
The software also has Search on captured data. I haven't used it, but it seems comprehensive:
https://tech-tools.com/searching.html
Overall the software is a bit unusual and takes some getting used to, but it's always responsive and stable. Never seen a crash.
BTW, I think this analyzer is a bit slow for the OP's applications.
And a bit expensive ::)
mtk:
--- Quote from: tggzzz on January 06, 2023, 10:40:14 pm ---Consder a system with a 100MHz clock, an address bus, a data bus, and an address valid signal. Every 1ms data is read, and you are only interested in reads from address in the range 1234 to 5678. You want to capture (up to) 10000 values read on the rising edge of the clock provided address valid is asserted and provided the address range is right.
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DSLogic Analyzers have stage trigger supporting 16 stages of trigger flag. Each stage support logic operation (and/or) of 2 sets of trigger. Each set support edge/level trigger of all channels, invert and counter. There is also serial trigger - https://www.dreamsourcelab.com/doc/DSView_User_Guide.pdf. It does not look much convenient to set up, but it seems possible to filter the requested from you values ?
nctnico:
--- Quote from: mtk on January 07, 2023, 07:19:39 am ---Regarding TEKTRONIX TLA715, the lowest price currently on eBay is US $699.99 + shipping from US $142.97 + import charges Est. $230.90, total US $1073.86. Doubtfully this amount can be called peanuts.
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Asking price isn't selling price on Ebay. You should be able to pick one up for $300 or so. Just make the seller an offer and you'll see pricing on logic analysers is very flexible. If not, then just wait a little bit for another one to pop up.
nctnico:
--- Quote from: Thomas on January 07, 2023, 05:31:57 am ---Some USB LA's have advanced triggering. I have the DigiView DV-518:
https://tech-tools.com/trigger-cfg.html
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This looks like a neat tool but what I'm missing from the specification are the input capacitance & impedance. And the capture buffer is quite small. 128Mbit in total (14Mbit per channel for the 9 bit version and 7Mbit/channel for the 18 bit version).
markone:
--- Quote from: mtk on January 07, 2023, 11:58:33 am ---DSLogic Analyzers have stage trigger supporting 16 stages of trigger flag. Each stage support logic operation (and/or) of 2 sets of trigger. Each set support edge/level trigger of all channels, invert and counter. There is also serial trigger - https://www.dreamsourcelab.com/doc/DSView_User_Guide.pdf. It does not look much convenient to set up, but it seems possible to filter the requested from you values ?
--- End quote ---
Serial trigger does not work at all with async serial and it's a huge pita to setup with I2C and SPI, stay away this thing if serial decoding is your job.
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