The TP3094 is a monolithic PCM Codec and Filter device implemented using a digital signal processing architecture. It provides four voice channels, combining transmit bandpass and receive low pass channel filters with companding Alaw or m-law PCM encoders and decoders. The device is fabricated using Nationals advanced CMOS process.
●The device includes anti-aliasing filters and sigma-delta converters dedicated to each channel,and by a common signal processing unit which performs all the remaining filtering and processingfor the four channels.
●The TP3094 includes a flexible PCM digital interface, which allows the device to be connected to PCM busses of different formats. It can also be connected with other TP3094 devices in a cascade fashion, for a system with up to 128 POTS interfaces (when a 2.048MHz PCM bus is used).
● Handles four voice channels
● Complete Codec and Filter system including:
● Transmit and receive channel filters
● A-law or µ-law companding encoder/decoder
● Power down mode for low power consumption
● Compatible to standard time division multiplexed PCM bus
● 8 bit mode, frame signal from external reference
● 32 bit mode, internal TSA, with consecutive TS
● Up to 128 channels (32 devices) can be cascaded
● Programmable functions (common for all 4 channels):
● A-law or µ-law
● Single MCLK clock,automatically selectable from 8.192MHz,
●4.096MHz, 2.048MHz and 1.536/1.544MHz
● Digital and Analog loopback test modes
● Designed for CCITT and LSSGR applications
● Single +5V power supply
● 44 lead PLCC surface mount package
● Maximize line card circuit density
● Use in Central Office, Loop Carrier, and PBX
●equipment subscriber line and trunk cards
● Wide operating temperature range 40°C to 85°C
