TP3094

TP3094 Quad PCM Codec/Filter April 2003 TP3094 COMBO® Quad PCM Codec/Filter General Description 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 National’s 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 processing for 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). Connection Diagram Features 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 8.192MH...