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Altera_Forum
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8 years ago

Cyclone V Configuration Devices

I've got a Terasic Cyclone V GX development board. I removed the EPCQ256 configuration device and am testing two other alternatives (Macronix MX25L257 and Cypress S25FL128). I created a simple proj...
Altera_Forum's avatar
Altera_Forum
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8 years ago

Hi gj_leeson,

First, definitely something is not right with the nSTATUS being at 2V. You need to check the nSTATUS pull up connection correctly to the VCCPGM voltage level and the POR monitored power supply. As long the nSTATUS does not reach to logic 1 (at least to the minimum voltage level VCCPGM),the configuration process cannot/will not start regardless in any configuration scheme.

Second, for Active Serial configuration scheme, the Altera FPGA device is built to recognize EPCS/EPCQ (any Altera configuration flash devices) during the configuration process and not non-supporting Altera configuration flash devices. This is expected, there are no information in the Altera website stating Active Serial scheme can be use together with Macronix or Spansion flash devices.

Regards,

nyusof

(This message was posted on behalf of Intel Corporation)