For my design, I'm using the Cyclone V (5CEFA7F23). I'm looking to boot the "factory image" from an EPCQ flash device using Active Serial x4, and then from the factory image (when in user mode), communicate with the same EPCQ device. The Cyclone V device will be receiving a firmware update over Ethernet that I'm looking to write to the flash device. I see within pin planner that the data pins are not assignable, which i presume is because they are dedicated for boot. For example, AS_DATA0 or pin AB4, is not assignable.
Is there a way to communicate with the flash device using the same pins that are used for boot? Or do i have to communicate in user mode via additional standard I/O pins? If the latter, I imagine the dedicated boot data[3:0] pins go into high-z, but I don't see this mentioned in the documentation.
Can someone provide any insight into this?
Thx
Is there a way to communicate with the flash device using the same pins that are used for boot? Or do i have to communicate in user mode via additional standard I/O pins? If the latter, I imagine the dedicated boot data[3:0] pins go into high-z, but I don't see this mentioned in the documentation.
Can someone provide any insight into this?
Thx