The SM5351A is an Audio Video (AV) switch with built-in 4-system CVBS input switch, 2-system S-video input switch, 2-system component video input switch, and 5-system audio switch. It has built-in 8-system cable connecting discriminator function, 2-system S2 discriminator function, and 1-system D-terminal discriminator function, and these discriminated status can read via I²C BUS^*1. The input switching and output muting function can be controlled individually for each block using the I²C BUS. The I²C BUS slave address is set using the ADS pin, allowing a maximum of two SM5351A devices to be controlled simultaneously.
*1:I²C BUS is a registered trademark of NXP B.V.