I was wondering how I should disable/enable the SerDes PCIe interface of the MPC8315E via SW. Would be enough to configure SDPD bit of SRDSCR0 register to '1' (Block power down) for disable it?
And should I also make any change in HW? For example, following the application note AN3438, it says that SD_IMP_CAL_TX signal has to be connected to GND using a 100R precision resistor when the interface is used, but when not used it has to be connected to 1V. If I disable the PCIe interface via SW, can SD_IMP_CAL_TX signal still be connected to the 100R resistor?
Thanks in advance!