The SDP-S controller board is part of the Analog Devices system demonstration platform (SDP). It features a USB-to-serial engine and exposes peripherals such as SPI, TWI/I2C, and GPIO. The board provides USB 2.0 PC connectivity and comes with PC software stack and base firmware. The SDP-S board is designed to be used in conjunction with various Analog Devices component evaluation boards and Circuits from the Lab reference circuits as part of a customer evaluation environment.