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REV3:
- Touch controller is routed to FE310 instead of BT817
- Added sound multiplexer between amplifier and phone jack/speakers
- Added BT817 sound connector
- Changed amplifier volage to 5.0V from BQ25895 boost converter
- Added console connector and power/reset/alt boot switches for i.MX8
- Added schottky barrier rectifier for BQ25895
REV2:
- Replaced FT813 with BT817 display/touch controller
BT817 24bit parallel output is serialized using DS90C185
i.MX8M LVDS output and BT817 output are multiplexed using TS3DV520E
- Added 2nd MAX98357A amplifier for stereo sound
- Added FT230X USB to UART interface. Allows programming both fe310 and esp32 without JTAG programmer
- Added LSM9DS1 accelerometer/gyroscope/magnetometer sensor
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