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Altera_Forum
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12 years ago

Cyclone V Active Serial configuration with Spansion S25FL serial flash

We have built a board with a Cyclone V FPGA on it and are trying to configure the FPGA via the active serial programming method using the Spansion serial nor S25FL256SAGNFI001. The FPGA pa...
Altera_Forum's avatar
Altera_Forum
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12 years ago

So I sent spansion a question about this and here is their response:

4-Byte addressing support is required to configure FPGAs from 256Mb or higher density SPI Flash.

Altera requires specific operations to enter (4BYTEADDREN – B7 Command) and exit (4BYTEADDREX – E9 Command) 4-Byte addressing mode.

Our S25FL256S does not support “B7” and “E9” commands, thus CANNOT be used to configure Altera FPGAs in Active Serial configuration mode. Hope it helps.