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! colspan="4" style="width:100%; text-align:left" ; border-bottom:solid 2px #ededed" |History
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==Auxiliary connectors interface ==
=== Description ===
* JTAG
[[File:{{{nomeETRA-som}}EVK-EVBauxiliary-Auxiliary connectors-connector.png|thumb|center|500px|Auxiliary connectors connector]]
===Signals ===
'''NOTE:''' the FDCAN1 pins are shared with touchscreen I2C interface and are not available when using I2C5.
See the [[ETRA SOM/ETRA Hardware/Peripherals/CAN|CAN]] page for more informations.
==== I2C5 ====
Configured by deafult for touchscreen I2C interface.
See the [[ETRA SOM/ETRA Hardware/Peripherals/I2C|I2C]] page for more informations.
==== SPI5 ====
'''NOTE:''' these pins are shared with UART7, cannot be used at the same time.
See the [[ETRA SOM/ETRA Hardware/Peripherals/SPI|SPI]] page for more informations.
==== UART7 ====
'''NOTE:''' these pins are shared with SPI5, cannot be used at the same time.
See the [[ETRA SOM/ETRA Hardware/Peripherals/USART|UART]] page for more informations.
==== SAI2 ====
==== LED driver ====
==== keyboard matrix ====
==== Interface membrane ====
==== JTAG ====
See the [[ETRA SOM/ETRA Hardware/Power and Reset/JTAG|JTAG]] page for more informations.
=== System control ===
See the [[ETRA SOM/ETRA Hardware/Power and Reset/Reset scheme and control signals|reset scheme]] for more informations.
The system control signals are the following:
* system reset
** tie to ground for reset the system
* power key
** tie to ground for power up and down the system
* write protect for carrier eeprom
** tie to ground for write inside the carrier eeprom
** the first 32 bytes of the eeprom are used to store the CB ConfigID, the corruption of these bytes prevents the system from boot.
* write protect for NAND
** this pin allow to prevent unwanted writes, tie to ground when the NAND are not to be written.
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[[Category:ETRA]]