I have just a few questions about the RIoT Board design. I'm trying to figure what the intention was behind the decisions.
Schematic '08 IMX6Q_SOC_B' has the PCIE_REXT (A2) pin to ground. The spec sheet (http://cache.freescale.com/files/32bit/doc/data_sheet/IMX6SDLCEC.pdf) says to connect it to ground through an external 200R precision resistor, but not what to do if the circuit is not used. Was this done because PCIe isn't used and thus doesn't need to do impedance calibration? Shouldn't it still be terminated?
Schematics '07 IMX6Q_SOC_A' and '18 Boot_UART2' has a push button connected to POR (C11) instead of On/Off (D12) on the processor. I assume it is forcing a reset in hardware by pulling the line low. However the On/Off pin can be used for software reseting (long pressing forces hardware reset). The On/Off pin has an offsheet connector that doesn't connect anywhere. I'm not going to lie, but this baffles me. I don't need a software reset on my design, but I am curious as to what the reasoning was.
