Telecommunications, austriamicrosystems### AS2523Line/Speakerphone circuit Serial Interface Enhanced voice switching Background noise monitoring Tx- and Rx-gain programmable Digital volume control of Rx signals Dual softclipping Loudspeaker amplifier for loudhearing and handsfree Automatic line loss compensation ### AS2533Contains all the functions needed to build an electronic telephone set with basic features Line Interface and Speech Circuit Dialler Ringer ### 以太网通信一系列以太网通信控制器、收发器和交换 IC