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service:hardware:imod:imodbuttoni2c

i-MOD Button/I2C

The i-MOD connectors are standard connectors defined by Keith & Koep to allow customers to easily add functions to a baseboard.

The connector got 3 pins for buttons and an I2C-interface for sensors etc.

This is the pinning of the connector on the baseboard.
Extension boards use the opposite numbering scheme.

Pin Signal Function
1 Button (On/Off) On/Off, Key, … (OS-specific)
2 Button (Vol+) Generic Button, i.e. Volume+
3 Button (Vol-) Generic Button, i.e. Volume-, Reset_In
4 GND Power
5 +3V3 Power
6 I2C_CLK I2C Clock signal
7 I2C_DATA I2C Data signal
8 I2C_INT GPIO; Mainly used as interrupt input pin of attached peripherals.
9 I2C_GPIO GPIO; Mainly used as output
10 \RESET_OUT
 Reset output of the baseboard:  
 Low during reset and suspend. 
 High when running. 

Connector: 687110149022 by Wuerth

Check the baseboard datasheet for button IO-voltage and usage. Typically the 3 button-signals are to be used with an open-collector Output / switch to GND.

Summary i-MOD solutions

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service/hardware/imod/imodbuttoni2c.txt · Zuletzt geändert: 2018/08/10 16:15 von