Begin assigning footprints to passive components, add component information to the common 10k resistors throughout the schematic, include TVS diodes on the switch/button I/O pins, use the DB2J20900L schottky diode throughout the design (in place of the ZLLS400)
by
Eric Kuzmenko
6 years 5 months
Add MIPI CSI sheet (contents need to be added once camera selection is complete)
by
Eric Kuzmenko
6 years 6 months
Flip the direction of FULL_CARD_POWER_OFF# and W_DISABLE*# switches such that the devices are on when the switch is open, this should ever so slightly reduce the power consumption when these devices are used (most likely more often than them being off)
by
Eric Kuzmenko
6 years 6 months
Connect the USB/SDIO bridge to WLAN rather than the uSD, fix a few ERC violations (not has zero errors/warnings), use best schottky option
by
Eric Kuzmenko
6 years 6 months
Added schematic page with USB hub/SD Card controller USB2660
by
Christian Schilmoeller
6 years 6 months
Add current sense resistors and jumper symbols in the schematic, assign the various signals left unspecified, complete the PWR_EN assignment and verify that thepower sequence would be brought up in the correct order, add an LED to the VBAT_REG rail for debugging purposes (know when the board is receiving power)
by
Eric Kuzmenko
6 years 6 months
Include power load switch ICs to the 3.3V and 5V rails so that the SoC can disable the peripherals' power using the PWR_EN signal
by
Eric Kuzmenko
6 years 6 months
Use a DP3T switch to select between eMMC, USB (serial download), and uSD boot devices, corrected the SW_BACK and SW_HOME buttons to have 33Ohm pull-ups instead
by
Eric Kuzmenko
6 years 6 months
Assign SAI5 to the WLAN/BT M.2, remove SIM2 slot due to conflicts between modules (specifically the L830-EB being a Config_0 module where the TX_BLANKING signal would connected to USIM_PWR2 sink), reassign the corresponding M.2 config pin to handle HP_DET, remove the AMOLED buck-boost as a different regulator will be used
by
Eric Kuzmenko
6 years 6 months