Then we know for sure they are the pullups for the I2C data and clock lines and we can tap into the I2C signals by soldering some very fine wires to the side of the resistor that is connected to the flex connector.Īfter checking the voltage at the two resistors, it is confirmed that they are both at 2.8V which means they are indeed the I2C pullup resistors. It is easy to tell if they are the pullups required for the I2C bus by checking if the side of the resistor not connected to the flex connector are tied together and tied to 3.3V. ![]() That just leaves the 2 mystery resistors. The 2 filtering caps for AVDD25 and VREF are also easy to spot. The 8 data lines are easy to spot with the 4 element resistor arrays protecting the data bus. From the GC0308 datasheet we see that it uses the following signal lines We also know that the tablet uses a Galax圜ore GC0308 Camera. ![]() ![]() So from the A13 datasheet, we know the CSI has the following signal lines:
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