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TP3094 Scheda tecnica(PDF) 1 Page - Texas Instruments |
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TP3094 Scheda tecnica(HTML) 1 Page - Texas Instruments |
1 / 20 page © 2003 National Semiconductor Corporation www.national.com TP3094 COMBO® Quad PCM Codec/Filter April 2003 General Description The TP3094 is a monolithic PCM Codec and Fil- ter device implemented using a digital signal pro- cessing architecture. It provides four voice channels, combining transmit bandpass and re- ceive low pass channel filters with companding A- law or m-law PCM encoders and decoders. The device is fabricated using National’s advanced CMOS process. The device includes anti-aliasing filters and sig- ma-delta converters dedicated to each channel, and by a common signal processing unit which performs all the remaining filtering and process- ing for the four channels. The TP3094 includes a flexible PCM digital inter- face, which allows the device to be connected to PCM busses of different formats. It can also be connected with other TP3094 devices in a cas- cade fashion, for a system with up to 128 POTS interfaces (when a 2.048MHz PCM bus is used). 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 multi- plexed 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 cas- caded • 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 Connection Diagram Order Number TP3094V TP3094 6 5 4 3 2 1 44 43 42 41 40 39 38 37 36 35 34 33 32 30 29 31 18 19 20 21 22 23 24 25 26 27 28 7 8 9 10 11 12 13 14 15 16 17 AGND1 VXI2 GXO2 VRO2 VRO1 NC GXO1 VXI1 NF AGND0 VXI0 FSR1 FSX1 FSR2 FSX2 FSR3 FSX3 DVCC NC DGND DX PT4 See NS Package V44A COMBO® and TRI-STATE® are registered trademarks of National Semiconductor Corporation |
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