| Revision
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Changes
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| A
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| B
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- Changed to Marvell PHY
- Changed speaker to Piezo to save space, and it is louder for alarm implementations.
- Added Nimblelink Socket
- Fixed touch controller to have correct IRQ polarity for sleep mode
- Changed 5V regulator to provide higher current (2.5 A to 5 A)
- Fixed SW_5V FET from being held off by offboard RS-232
- Auto select LCD voltage rails with no specific strapping resistors differentiating build
- Changed WIFI from TIWI-BLE to equivalent Atmel/Microchip WILC3000 module with 12 year availability.
- WIFI DOES NOT WORK ON THIS BOARD REVISION
- Micro USB ports both moved a few mm in to fix interference with daughter cards
- CN26 modified to support our daughtercards
- Backlight regulator has GPIO enable allowing backlight to be entirely turned off besides PWM.
- Removed SIM socket
- Changed scan on Microtips LCD to rotate 180 degrees to match other LCDs
- Added SATA/PCIe MUX. Mode is selected in u-boot.
- Changed 11V regulator
- Grounded CPU DIO (Ball L21) to identify REV B builds.
- Additional minor changes for internal production
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| C
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- WIFI moved to SPI to avoid SDIO bug in wifi chip. WIFI works now with latest kernel.
- R198 removed means REV C board.
- Added PCIe reset GPIO. Fixed some devices not working after a software reboot.
- XBEE_RESET# moved to FPGA GPIO
- TOUCH_RESET# moved to CPU GPIO so rare i2c bus lockups can be recovered with a reboot.
- Minor layout fixes
- Minor changes to CN99 for production
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| E
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- Migrated from Marvell Ethernet PHY to Broadcom BCM54213PE
- Replaced EOL NXP MMA8451 accelerometer with:
* ST Microelectronics ISM330DLCTR 6-axis sensor (Accelerometer/Gyroscope)
* ST Microelectronics IIS2MDCTR 3-axis Magnetoresistive sensor
- Added MUX to remove USB from XBEE/Nimbelink header by default. Nimbelink users will need to add
gpioset 4 18=0 to their Nimbelink init. Disabling USB to this header by default fixes XBEE radio support.
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