Add bypass caps to logic gates used with the W_DIS...
by Eric Kuzmenko 7 years 2 months
Add bypass caps to logic gates used with the W_DISABLE and the 9-axis IMU's INT pins
Nearly complete the LCD/DSI and cap-touch schemati...
by Eric Kuzmenko 7 years 2 months
Nearly complete the LCD/DSI and cap-touch schematic, add notes from the display's datasheet regarding the various pin assignments, add component property information for the 39-pin DSI clamshell connector

Still need to determine what this requested "low power state signal" requirement is for the display.
Add LCD display's 22.4V (@40mA) LED backlight driv...
by Eric Kuzmenko 7 years 2 months
Add LCD display's 22.4V (@40mA) LED backlight driver/boost converter IC circuit (PAM2841), selected the rectifying/schottky diode (SS14), and set the OVP to 37.6V as found on the IC's EVB
Modify the boot config/boot mode pins and switch s...
by Eric Kuzmenko 7 years 2 months
Modify the boot config/boot mode pins and switch such that only eMMC and USB (serial downloader) are boot options due to the uSD being attached to the USB<->SD bridge chip, add OV5460 notes about using the internal DVDD 1.5V regulator
Make changes to the USB hub + SD bridge circuit an...
by Eric Kuzmenko 7 years 2 months
Make changes to the USB hub + SD bridge circuit and uSD sheet based on Prolific's feedback after asking questions
Add smart card circuit using the SEC1110 USB to IS...
by Eric Kuzmenko 7 years 2 months
Add smart card circuit using the SEC1110 USB to ISO/IEC 7816 bridge chip, include ID-0001/2FF/mini-SIM socket connector selection informatino (1010027182)

Need to create footprint for the mini-SIM socket
Add Prolific MA8627 USB hub + SDIO bridge chip and...
by Eric Kuzmenko 7 years 2 months
Add Prolific MA8627 USB hub + SDIO bridge chip and use it in place of the USB2660, SD interface used with the uSD (not WLAN)
Move MIPI DSI & CSI sheets into a "MIPI" sheet, bo...
by Eric Kuzmenko 7 years 2 months
Move MIPI DSI & CSI sheets into a "MIPI" sheet, both DSI and CSI will likely use the I2C level shifter
Begin assigning footprints to passive components, ...
by Eric Kuzmenko 7 years 2 months
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)

Added notes about the battery holder, battery size, and the fact that the 103HT thermistor can fit underneath the 18650 battery when the battery is insterted into the holder.

Included frequency response curve for the new/cheaper SMD speaker (slightly thicker mechanical dimension).

Included note about the RedPine RS9116's SDIO_RESET# line expecting a 2.31V VIH logic level, increased the pull-up to 100k (M.2 standard states that this is should be 1.8V level).

Added a TODO note stating the 1.8V logic-level I2C devices should share the same level-shifter that will be on the top-level circuit (in next commit).
Add MIPI CSI sheet (contents need to be added once...
by Eric Kuzmenko 7 years 2 months
Add MIPI CSI sheet (contents need to be added once camera selection is complete)
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