# System Description The system is described here. - **{{ epc670_link}}** – Camera Sensor - **Clock Generator** – Clock Generator Si5351ABGTR with 25 MHz input clock crystal - **Power Control** – Power control gates for controlled sensor power up. Refer to **{{ epc670_link}}** datasheet for the correct power up sequence - **Illumination Control** – Provides GPIO control over LED selection - **Temperature Sensor** – 2x temperature sensors (TMP112AIDRLR) next to each LED for monitoring - **Prod. & Conf. Data EEPROM** – Production and Calibration Data EEPROM - **HAT+ EEPROM** – Hardware Identification EEPROM ```{image} ../_static/images/sys_epc670_tof_hat.drawio.svg ```