1. 15 Aug, 2018 1 commit
    • Eric Kuzmenko's avatar
      Move some of the reference designators on the silkscreen layers to more... · 97f08f6a
      Eric Kuzmenko authored
      Move some of the reference designators on the silkscreen layers to more visible positions where possible, update the schematic, BoM, footprint, and layout to reflect the fact that the dual 2-input AND gate (U1803) is actually a 74AUP2G08* part (no longer *LVC*)
      
      The rest of the silkscreen designators still need to be placed in more visible/unobstructed locations. The BoM still needs to have tolerance & rating values enter for all passive components that will be supplied by the PCBA house.
      97f08f6a
  2. 14 Aug, 2018 2 commits
    • Eric Kuzmenko's avatar
      Make the ENET_* traces on the top layer 53mils in order to ensure they have a... · 2456bfb3
      Eric Kuzmenko authored
      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
      2456bfb3
    • Eric Kuzmenko's avatar
      Add a 5.29x27.14mm Purism logo to the "back" silkscreen of the board, seen on... · 0154972b
      Eric Kuzmenko authored
      Add a 5.29x27.14mm Purism logo to the "back" silkscreen of the board, seen on the bottom left edge when facing the display, remove the old schematic rescue files which are remnants from the Kicad 5.0.0 upgrade
      0154972b
  3. 11 Aug, 2018 3 commits
  4. 08 Aug, 2018 1 commit
    • Eric Kuzmenko's avatar
      Place and route the JTAG circuit, place and route the BOOT_MODE slide switch... · dde321d8
      Eric Kuzmenko authored
      Place and route the JTAG circuit, place and route the BOOT_MODE slide switch circuit, place and route the user-LED circuit, place and route the top-level sheet passive components (I2C2 pull-ups, 5V_SOM, 3V3_OUT, & ENET_2V5 bypass caps, PWR_EN pull-down, USB2_VBUS voltage divider for SoC's comparator, etc), route the microphone to the analog audio switch IC, update the schematic, BoM, and footprints to reflect the MHF4 coax cable change (including them being 5cm long)
      
      Unrouted count is now 324. The power circuit and the display are what is now left to be placed on the board, a few nets currently on the board still need to be connected (~120). 3V3_SNVS and various other misc. power rails still need to be routed on the power plane (vias need to be placed near pads).
      
      JTAG header footprint is accessible from the display side (not underneath the display). User-LED is in a location as-close-as-possible to the bottom center of the board (somewhat near the microphone).
      
      Serpentine bends still need to be added to the CSI to match the intra-pair skew, still need to move the prox sensor to the top of the board!
      dde321d8
  5. 03 Aug, 2018 1 commit
    • Eric Kuzmenko's avatar
      Add pi-matching circuit to the baseband modem antenna's feedline · 2f8fb756
      Eric Kuzmenko authored
      The return path for the antenna may have to have a 6.8nH Murata LQG15HN inductor installed on it (cutting the ground trace shorting the pads). The BoM was updated with the new components and everything was reannotated and updated (page 2's caps were out of order).
      2f8fb756
  6. 02 Aug, 2018 2 commits
  7. 01 Aug, 2018 2 commits
  8. 30 Jul, 2018 1 commit
  9. 28 Jul, 2018 2 commits
    • Eric Kuzmenko's avatar
      Coarsely route HDMI diff pairs from the SoM to the CMF&ESD chips, place the... · 0ae0b593
      Eric Kuzmenko authored
      Coarsely route HDMI diff pairs from the SoM to the CMF&ESD chips, place the microphone in a position that does not interfere with either the HDMI circuit or the RJ45
      
      The HDMI diff pairs will need to try to have 30mil clearance between each other at every point possible, in tight spaces this is not possible, even spacing will need to be adjusted in the following commit.
      0ae0b593
    • Eric Kuzmenko's avatar
      Begin routing the HDMI circuit · 8c2544ff
      Eric Kuzmenko authored
      Needed to create the HDMI_HEAC_P/N labels to route Utility&HPD as diff pairs. Made cap C1905 NC, which is in parallel with a 0Ohm resistor between the HDMI sheilding and GND.
      8c2544ff
  10. 27 Jul, 2018 1 commit
  11. 26 Jul, 2018 1 commit
  12. 24 Jul, 2018 1 commit
  13. 20 Jul, 2018 1 commit
  14. 19 Jul, 2018 2 commits
  15. 17 Jul, 2018 1 commit
  16. 16 Jul, 2018 2 commits
  17. 14 Jul, 2018 1 commit
  18. 09 Jul, 2018 2 commits
  19. 05 Jul, 2018 2 commits
  20. 04 Jul, 2018 1 commit
    • Eric Kuzmenko's avatar
      Now using GPIO5_IO03 (P4.03) to put the class-D op-amp in shutdown and... · 3bf0094e
      Eric Kuzmenko authored
      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
      
      Still need to use I2C3 instead of I2C1 according to EmCraft's suggestions.
      3bf0094e
  21. 03 Jul, 2018 3 commits
  22. 02 Jul, 2018 1 commit
  23. 30 Jun, 2018 1 commit
  24. 29 Jun, 2018 3 commits
  25. 28 Jun, 2018 2 commits