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Altera_Forum
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13 years ago

Is it possible to write a design over PCIe into Flash?

Hi everyone, I have the following problem: I'm working on a device with a JTAG interface which is only accessable while the device is outside its case. Once it is in its case the JTAG interfa...
Altera_Forum's avatar
Altera_Forum
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12 years ago

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I don't know if the EPCS Serial Flash controller is still a good idea. The documentation is very poor and Altera says: "Altera does not publish the usage of the control and data registers." and "The core must be connected to a NIOS II processor.".

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Where did you get that from? The registers are described in http://www.altera.com/literature/ug/ug_embedded_ip.pdf on page 5-4 and there is nothing secret about them. In fact if you look the EPCS controller core is nothing more than a ROM containing a bootloader and a SPI master combined in a single address space. If you don't intend to use a Nios CPU you can just use a SPI master instead. IIRC the EPCS driver provided by Altera should even work in this case with little modification (basically configure it so that it doesn't use an offset from the controller's base address).