Reference Manual

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www.digiembedded.com 9
VGA interface ........................................................................... 66
UARTs .................................................................................... 66
UART A - console ....................................................................... 66
UART B - UART / MEI................................................................... 66
UART C - TTL interface ................................................................ 66
UART D - TTL interface ................................................................ 66
SPI interface(s) ......................................................................... 67
Camera interface.............................................................................. 68
Switches and push-buttons .................................................................. 69
Reset control, S1 ....................................................................... 69
Power switch, S2 ....................................................................... 69
Legend for multi-pin switches........................................................ 70
Module configuration switches, S4................................................... 70
Serial port B MEI configuration switches............................................ 70
Test points ..................................................................................... 71
Numbers and description.............................................................. 71
Factory default interface configuration for development board ...................... 72
LEDs ............................................................................................. 73
WLAN, LE10.............................................................................. 73
Power LEDs, LE1, LE4, and LE7....................................................... 73
User LEDs, LE5 and LE6 ................................................................ 74
Serial status LEDs....................................................................... 74
Status LEDs Serial port A .............................................................. 75
Status LEDs Serial port B .............................................................. 75
Debug, LE3 .............................................................................. 75
Battery and battery holder .................................................................. 76
Serial UART ports.............................................................................. 77
Serial port A, RS232, X27.............................................................. 77
Serial port B, MEI interface, X16..................................................... 79
Serial port C, TTL interface, X19 .................................................... 79
Serial port D, TTL interface, X22 .................................................... 80
I2C interface ................................................................................... 81
I2C connector, X22 ..................................................................... 81
SPI interface ................................................................................... 82
X8-SPI connector........................................................................ 83
Current Measurement Option................................................................ 84
Measurement options .................................................................. 84
How the CMO works .................................................................... 85
PoE module connectors - IEEE802.3af...................................................... 86
The PoE module ........................................................................ 87
PoE connector (power in), X17 ....................................................... 87
PoE connector (power out), X26 ..................................................... 87
POE_GND................................................................................. 87
VGA connector ................................................................................. 88
VGA connector, X18.................................................................... 88