Phytec phyCORE-i.MX31, Hardware Manual

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phyCOREi.MX31
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PHYTEC Messtechnik GmbH 2007 L-700e_0
7.5 I²C EEPROM (U17)
The phyCORE-i.MX31 is populated with a ST 24W32C
1
non-volatile 32KByte EEPROM (U17) with
an I²C interface to store configuration data or other general purpose data. This device is accessed
through I²C port 2 on the i.MX31. The serial clock signal and serial data signal for I²C port 2 are made
available at the phyCORE-connector as x_I2C2_SDA on X1 pin 84C and x_I2C2_SCL on X1 pin 83C.
Three solder jumpers are provided to set the lower address bits: J4, J5, and J6.
Refer to section 7.5.1
for details on setting these jumpers.
Write protection to the device is accomplished via jumper J8. By default this jumper is closed, allowing
write access to the EEPROM. Removing this jumper will cause the EEPROM to enter write protect
mode, thereby disabling write access to the device.
Refer to section 7.5.2 for further details on setting
this jumper.
1: See the manufacturer’s data sheet for interfacing and operation.