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6.14.2 Reset Button................................................................................................................................................ 16
6.15 LED Indicators..................................................................................................................................................... 16
6.16 Additional Functionality ..................................................................................................................................... 17
6.16.1 GPS............................................................................................................................................................... 17
6.16.2 SATA............................................................................................................................................................. 17
6.16.3 Magnetometer, Gyroscope & Accelerometer Interface ............................................................................. 18
6.16.4 JTAG............................................................................................................................................................. 19
7. Expansion Connectors ............................................................................................................................................ 20
7.1 Low Speed Expansion Connector ......................................................................................................................... 20
7.1.1 UART {0/1} ..................................................................................................................................................... 20
7.1.2 I2C {0/1}......................................................................................................................................................... 20
7.1.3 GPIO {A-L} ...................................................................................................................................................... 21
7.1.4 SPI0 ................................................................................................................................................................ 21
7.1.5 PCM/I2S ......................................................................................................................................................... 21
7.1.6 Power and Reset............................................................................................................................................ 21
7.1.7 Power Supplies .............................................................................................................................................. 21
7.2 High Speed Expansion Connector......................................................................................................................... 22
7.2.1 MIPI-DSI0 ....................................................................................................................................................... 23
7.2.2 MIPI-CSI {0/1} ................................................................................................................................................ 23
7.2.3 I2C {2/3}......................................................................................................................................................... 23
7.2.4 HSIC................................................................................................................................................................ 23
7.2.5 Reserved ........................................................................................................................................................ 23
7.2.6 SD/SPI ............................................................................................................................................................ 23
7.2.7 Clocks............................................................................................................................................................. 23
7.2.7 USB ................................................................................................................................................................ 23
7.3 Audio Expansion Connector ................................................................................................................................. 24
7.3.1 40-Pin Audio Expansion Connector ............................................................................................................... 24
7.3.2 16-Pin Audio Expansion Connector ........................................................................................................ 25
8. Power Management Overview............................................................................................................................... 26
8.1 Block Diagram....................................................................................................................................................... 26
8.2 DC Power Input..................................................................................................................................................... 26
8.3 Power Source Selection and Sequencing ............................................................................................................. 27
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