Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
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...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

ealonso, I'm using StratixII. For that device I must not assing the EPCS_CONTROLLER signals to pins.

As I read in the Embedded Peripherals Handbook you have to do that in case of Cyclone3.

In Chapter 9: Configuration, Design Security, and Remote System Upgrades in the Cyclone III Device Family (page 9–13) you can see the connection of the EPCS to the FPGA.

Futhermore I attached you a example of connection EPCS4 to 3C16.

You should also verify the setting of the MSEL pins which selects the configuration schemes.

Do you have assigned the correct pin numbers?

(see http://www.altera.com/literature/lit-dp.jsp?category=cyc%203&showspreadsheet=y (http://www.altera.com/literature/lit-dp.jsp?category=cyc%203&showspreadsheet=y)

Which Cyclone device you are using?

Jens