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Dear all,
I need to configure both CPLD (EPM570) and active serial PROM (EPCS16) on a single JTAG chain header. Here EPCS16 can be configured via JTAG using the Serial Flash Loader technique no doubt. on the same JTAG chain can i connect the CPLD also tht's my question? also attached the block diagram for more clarity. Regards, Raja.SLink Copied
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of course you can
make shure your fpga is the first in the jtag chain, otherwise you must tell all your scripts and tools to use device 2 what is a pain. if the fpga is the first in the row then you just connect the jtag to your pcb and quartus and all others run as there is only one device in my designs i have jtag tdo pin 3 <- MaxII TDO MaxII TDI <- FPGA TDO FPGA TDI <- JTAG tdi pin 9 so your cpld is the first device on jtag chain- Mark as New
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Thanks michael
Have you used Serial Flash Loader to program active serial PROM? i am using quartusII7.2. Is this version enough for my requirement? also don't forget i should use serial flash loader technique to configure PROM. Regards, Raja.S- Mark as New
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i am quite unshure what you mean with serial flash loader.
the epcs is initially programmed via the command line tools using the usb blaster and later via our operating system if an update is performed. 7.2 is quite old and there have been some changes. is there a reason to keep 7.2 and not upgrade to 9.0 sp2 ?- Mark as New
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for information on serial flash loader please refer
1] page 468-470 in altera configuration handbook 2] an370 i cant use version other than quartusII7.2 coz i dont hav license for others.- Mark as New
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As a known bug, SFL can't coexist with other virtual JTAG instances, e.g. SignalTap II, in a design with Quartus Programmer versions up to 8. But you can always use the factory default SFL image to access the EPCS device.

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