The TLV320VD30 is an analog front end (AFE) device for VDSL systems. The TLV320VD30 provides a transmitter and a receiver. Both the transmitter and receiver have up to 11 MHz-bandwidth performance. The device can be used for central office and remote VDSL applications. The transmitter consists of a 12-bit/22 MHz DAC and a programmable line driver interface. The receiver consists of a 12-bit/22 MHz ADC, a programmable gain amplifier, a compromise equalizer, and an RFI cancellation circuit. The device includes a tone detect circuit, and a numerically controlled crystal oscillator. The TLV320VD30 provides two parallel ports for fast data transfers and a serial port for device control. The parallel ports are 12-pin ports with data transfer rates of up to 22 MHz per 12-bit word. One parallel port is dedicated to DAC input, the other parallel port is dedicated to ADC output. The serial port supports both write and read operations. The serial data transfer rate is 1.38 MHz per bit. Data is transferred in 16-bit words.