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Altera_Forum
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15 years ago

Fail to Boot Software from EPCS16

Hi, I have made a simple custom system with a EP3C16Q240, EPCS16,SDRAM,an AS connector,a JTAG connector and a 50Mhz system clock in which MSEL[0:2]=[010],VCCIO=3.3V.The SOPC contains a cpu with re...
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Altera_Forum
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15 years ago

the epcs_controller clock in my SOPC is the same like NIOS clock (100 MHz). But in case of Cyclone3 I don't know.

Here (page 9-12):

http://www.altera.com/literature/hb/cyc3/cyc3_ciii51016.pdf (http://www.altera.com/literature/hb/cyc3/cyc3_ciii51016.pdf)

you can see how pull-ups are used for AS mode. And Table 9-7 (page 9-11) shows the setting of MSEL pins. It should be one of the first 4 modes in the table in your case.

You wrote you have 2 connectors one for .sof and one for .pof? Have you connected the right one for flash programmer? I use the JTAG-connector (TMS, TCK, TDI,, TDO) for programming with flash programmer. It is the same on which the .jic file is downloaded.

Jens