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Altera_Forum
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12 years ago

solution for mcu to configure ALTERA FPGA

Hello, i'm trying to use a MCU(like C8051) to configure Cyclone IV device(EP4CE30) in Passive Serial mode. In the past, i was using GPIO of MCU to simulate the configure timing. But configure sp...
Altera_Forum's avatar
Altera_Forum
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12 years ago

The AS pins aren't used by the FPGA once it is configured, so there is no bus conflict problem. In the FPGA target settings you can set the AS pins as regular I/O and connect a regular SPI master to them inside the FPGA image. That way the application can access the flash.