Haider Posted March 16, 2015 Report Share Posted March 16, 2015 hi i just trying to compare between papilio pro and duo to see what is the difference and which one have more feature to do more project and implement more circuit with it from papilio pro page i see its contain 64Mbit Micron MT48LC4M16 SDRAM while Duo does not have SDRAM only 2MB ISSI IS61WV5128 SRAM can someone reccomend one of these boad to me i want the logic analyzer and implement it on the board is that possible with papilio pro or not my regards Quote Link to comment Share on other sites More sharing options...
Jack Gassett Posted March 16, 2015 Report Share Posted March 16, 2015 Hello Haider, The SRAM of the Papilio DUO is much easier to use and is more suitable to use with the Logic Analyzer core. You get less of it but the tradeoff is how easy it is to use. With the SDRAM you get a lot more, but you have to learn about and follow the timing restrictions to utilize it. Jack. Quote Link to comment Share on other sites More sharing options...
Haider Posted March 16, 2015 Author Report Share Posted March 16, 2015 thank you jack for reply one more question what if i want to implement or design hardware with Duo board need SDRAM like one in papilio proin this situation can i use external sdram or the SRAM will be enough Quote Link to comment Share on other sites More sharing options...
Jack Gassett Posted March 16, 2015 Report Share Posted March 16, 2015 Well, the constraint is how many pins are available... You could connect SDRAM to a CPLD and make a simplified memory interface that uses fewer pins and is tailored for your memory usage... Jack. Quote Link to comment Share on other sites More sharing options...
Haider Posted March 16, 2015 Author Report Share Posted March 16, 2015 thank you Mr.Jack Gassett i thin i'll choice Papilio Duo to start learingi'll buy the kitsPapilio DUO-2MBandLogicStart Shield from seeedstudio.com but one more question pleasewhen i implement logic analyzer i thing i need probe to use itwhat is the best kitis this will be enough and connect well with Duo or not www.seeedstudio.com/depot/Open-logic-sniffer-probe-cable-p-619.html Quote Link to comment Share on other sites More sharing options...
Haider Posted March 16, 2015 Author Report Share Posted March 16, 2015 duplicated post ... sorry Quote Link to comment Share on other sites More sharing options...
Felix Posted March 16, 2015 Report Share Posted March 16, 2015 What do you want to analyze? Quote Link to comment Share on other sites More sharing options...
Haider Posted March 16, 2015 Author Report Share Posted March 16, 2015 i didn't use logic analyzer beforealso i dont have one its little expensivei want to learn FPGA so i think it's good chance to use the same board to implement Logic Analyze...i want to analyze USB signal between usb flash disk and PC or any thing have digital signal Quote Link to comment Share on other sites More sharing options...
Haider Posted March 17, 2015 Author Report Share Posted March 17, 2015 any suggestion about the probes Quote Link to comment Share on other sites More sharing options...
Felix Posted March 17, 2015 Report Share Posted March 17, 2015 i use the probes from seeedstudio and they work fine, but you will probably need a male/male header to connect the probes to the pduo Quote Link to comment Share on other sites More sharing options...
Jack Gassett Posted March 17, 2015 Report Share Posted March 17, 2015 Hello Haider, Those probes will work fine with the DUO but like Felix said, you will need a way to connect the probes to the DUO. This buffer would protect the FPGA pins from higher voltages and give you the male pins you need:http://www.seeedstudio.com/depot/Logic-Sniffer-16bit-Input-Buffer-Wing-p-721.html Jack. Quote Link to comment Share on other sites More sharing options...
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