TP3070-X中文资料COMBO® II Programmable PCM CODEC/Filter数据手册TI规格书

描述 Description

General Description
The TP3070 and TP3071 are second-generation combined PCM CODEC and Filter devices optimized for digital switch ing applications on subscriber line and trunk cards. Using advanced switched capacitor techniques, COMBO II combines transmit bandpass and receive lowpass channel filters with a companding PCM encoder and decoder. The devices are A-law and µ-law selectable and employ a conventional serial PCM interface capable of being clocked up to 4.096 MHz. A number of programmable functions may be controlled via a serial control port.

特性 Features

■ Complete CODEC and FILTER system including:
   — Transmit and receive PCM channel filters
   — µ-law or A-law companding encoder and decoder
   — Receive power amplifier drives 300Ω
   — 4.096 MHz serial PCM data (max)
■ Programmable Functions:
   — Transmit gain: 25.4 dB range, 0.1 dB steps
   — Receive gain: 25.4 dB range, 0.1 dB steps
   — Hybrid balance cancellation filter
   — Time-slot assignment; up to 64 slots/frame
   — 2 port assignment (TP3070)
   — 6 interface latches (TP3070)
   — A or µ-law
   — Analog loopback
   — Digital loopback
■ Direct interface to solid-state SLICs
■ Simplifies transformer SLIC; single winding secondary
■ Standard serial control interface
■ 80 mW operating power (typ)
■ 1.5 mW standby power (typ)
■ Designed for CCITT and LSSGR applications
■ TTL and CMOS compatible digital interfaces
■ Extended temperature versions available for −40˚C to +85˚C (TP3070V-X)
Note: See also AN-614, COMBO II application guide.