The SP601 does not have temperature sensors.

Instead, I used the SP601 and the FMC XM105 daughter board to connect to a seperate board with four TMP100s sensors on a 2.5 V I2C bus.

The I2C SCL signal was connected to FMC_LA19_P (pin 38) and the I2C SDA signal was connected to FMC_LA19_N (pin 40). These signals were echoed to FMC_LA09_P (pin 37) and FMC_LA09_N (pin 39) respectively for examination by an Intronix Logicport logic analyzer.

The SP601 USB UART was used to transmit the human-readable I2C temperature measurements to a console.