Description
The device consists of four independent channels of codec and digital signal processing functions on one chip. In addition to the classic A-to-D and D-to-A conversion, each channel provides termination impedance synthesis and a hybrid balance network.

Features
■ 5 V operation
■ Per-channel programmable gains, equalization, termination impedance, and hybrid balance
■ Programmable µ-law, linear, or A-law modes:
    — Up to 256 time slots per frame
    — Supports PCM data rates of 512 kbits/s to 16.384 Mbits/s
    — Double-clock mode timing compatible with ISDN standard interfaces
■ Fully programmable time-slot assignment with bit offset
■ Analog and digital loopback test modes
■ Serial microprocessor interface:
    — Normal and byte-by-byte control modes
    — Fast scan mode
■ Six bidirectional control leads per channel, for SLIC and line card function control
■ Differential analog output:
    — Mates directly to SLICs, eliminating external components
■ Sigma-delta converters with dither noise reduction
■ Quad design to minimize package count on dense line card applications
■ Meets or exceeds ITU-T G.711—G.712 and relevant Telcordia Technologies™ requirements