<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div>>From the pictures, the 8 pin chip to the left of the A10 appears to be an I2C eeprom and if you add R14,R15(jumper) then I2C is available at the 6 pin connector below the eeprom. <br>>Pin 1 - SCL<br>>Pin 2 - SDA</div><div><span>>Pin 3 - GND<br>>Pin 4 - ?? (Requires R16 jumper)<br>>Pin 5 - ?? (Requires R17 jumper)<br>>Pin 6 - Vcc<br><br>Pin 1 - SCL (PB18 - TWI1_SCK)<br>Pin 2 - SDA (PB19 - TWI1_SDA)<br><br>Connector<br>10J3<br>Pin 1 - ?? AC coupled <br>Pin 2 - ?? AC coupled</span></div><div><span>Pin 3 - GND</span></div><div><span>Pin 4 - PB20 - TWI2_SCK<br><span>Pin 5 - PB21 - TWI2_SDA<br>Pin 6 - Vcc</span></span><span><span> <br>?? This maybe FM Radio Line In (Missing 2 resistors and capacitor/channel)<br>Pin 4 and 5 are active without the addition of any
components.</span><br><br>Robert<br>QQ:1531958149<br></div></span><div> </div></div></body></html>