Dennis Field / dvk-mx8m-bsb - History

Add decoupling/stitching capacitors to the 5V_P, 3V3_P, and 1V8_P rails which will be spread through the respective power planes (not necessarily having to be near chips)

Replace the AP22800 load switch with the P-channel AP22814 load switch IC due to its reverse current & over current protection capability, add level shifter circuit to the WWAN's DPR signal

Reverse current is no longer an issue with the load switches. One more obvious "TODO" for the schematic left which is to simply place several 100nF bypass caps on the 5V_P, 3V3_P, and 1V8_P rails (investigate how EmCraft is placing these in their layout).

Add decoupling capacitors near the WLAN+BT M.2 Key E socket, assign the tantalum capacitors their various footprints, find suitable 220uF tantalum bulk capacitors for the M.2 modules which are rated to 10V

Need to figure out if the load switch IC (AP22800) that derives 3V3_P is fine with having the large output capacitance (no unwanted reverse current).

Make corrections to schematic based on Emcraft's baseboard revision changes

Assign most of the capacitors their respective footprints (most are 0603s), add camera/CSI connector component info, source cheaper distributors for 3.5mm headset jack and RJ45

Add notes regarding I2C's 3V3_OUT supply and the fact that it is sourced from NVCC_3P3 (3A BUCK6), add additional notes regarding the RTC and Camera's I2C slave address, reannotate the whole schematic (nearly the last time)

Add IRQ# signal coming from the RTC, go over the SoM pins and fix lingering errors that are found

Modify the CSI circuit to use a 02x15 connector for potential use with the CO8725-B5SA-E camera, include cap touch FPC connector details, make minor adjustments to GNSS antenna circuit

Add WWAN and WLAN+BT MHF4 coax connectors and antennae symbols to the schematic, remove home and back buttons, reorder sheets so that GNSS is above the haptic motor sheet

Assign UART3 to the GNSS module, remove this UART3 from the WWAN M.2 and assign GPIO5_IO03 to DPR