Mixing Multi-device FPP configuration with JTAG

The Configuration Handbook mentions this point more than once: nCE must be held low during JTAG configuration. You have two options to achieve this: 1. Connect the pin to ground. 2, If it's connected to preceeding devices nCEO in multi device chain (may be AS, AP, PS or PP), this device must be configured before, cause nCEO will go low only after succesful configuration. configured in the same order means the actual sequence in time. If you want to program all devices in a single action, then this would be identical to the order in JTAG chain which is also the order in the programming window.