TP3094 Datasheet | National Semiconductor

Description The TP3094 is a monolithic PCM Codec and Filter device implemented using a digital signal processing architecture. It provides four voice channels, bining transmit bandpass and receive low pass channel filters with panding 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 mon 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 - plete Codec and Filter system including: - Transmit and receive channel filters - A-law or µ-law panding encoder/decoder - Power down mode for low power consumption - patible 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 (mon 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 VXI3 GXO3 VRO3 AVCC1 PDN3 PDN2 PDN1 PDN0 A/µLaw MCLK DR AGND1 VXI2 GXO2 VRO2 NC VRO1 GXO1 VXI1 NF AGND0 VXI0 6 5 4 3 2 1 44 43 42 41 40 7 39 8 38 9 37 10 36 12...