In preperation for the final order, re-export all the manufacturing files using the current date and rev number v1.0.0
by Eric Kuzmenko 5 years 5 months
Make pin 6 VDD for U1301 (single 2-input OR) and U1504 (single 2-input AND) instead of pin 5 (NC), swap pins 2 and 5 of U1803's (dual 2-input AND) schematic symbol (functionally insignificant, does not affect the layout)
by Eric Kuzmenko 6 years 1 month
Make the ENET_* traces on the top layer 53mils in order to ensure they have a 50Ohm single-ended impedence, move one of the 5V_P bypass caps close to the SoM end of the USB2 diff pair, add meanders to the ENET_TXC, ENET_TX_CTL, ENET_RX_CTL in order to ensure these segments are matched to the long ENET_RXC segment (56.051mm, the rest of the RGMII signals are <10mm skew from this length and don't need adjusting, re-route the SIM card such that UIM-RESET is routed in between UIM-CLK and UIM-DATA as recommended by a BB manufacturer
by Eric Kuzmenko 6 years 3 months
Add pi-matching circuit to the baseband modem antenna's feedline
by Eric Kuzmenko 6 years 3 months
Change all 0603 capacitors _EXCEPT_ the 2.2uF, 4.7uF, 8.2uF, 10uF, and 22uF caps to 0402
by Eric Kuzmenko 6 years 3 months
Reduce all 0603 resistor sizes to 0402
by Eric Kuzmenko 6 years 3 months
Update the schematic symbols and footprints after upgrading to KiCad 5.0.0, fix all ERC and DRC violations after the new update/upgrade
by Eric Kuzmenko 6 years 4 months
Update project files to KiCad 5.0.0
by Eric Kuzmenko 6 years 4 months
Move the charge controller, USB-C TCPC, and RTC to I2C1
by Eric Kuzmenko 6 years 4 months
Now using GPIO5_IO03 (P4.03) to put the class-D op-amp in shutdown and conserve energy when muted, make C1716 near the ETH PHY's DVDDL pin 47 220nF instead of 10uF (EmCraft suggested that this should be 100nF but their's is 220nF, asked why), added a 10k pull-down to PAM2841's ENA pin, added a 100nF cap to the smart card's C1 VCC pin, added a 1uF cap to the haptic motor circuit's 3V3_P rail
by Eric Kuzmenko 6 years 4 months
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