MX93000KC

MX93000 FEATURES Single +5V power supply Sigma-Delta A/D D/A with digital filters Support u/A Law and 16-bit linear format On-chip automatic level control On-chip differential line driver On-chip digital volume control Programmable transmit/receive gain control Support switch paths for DAM (Digital Answering Machine) applications Easy interface to general purpose DSPs Easy read/write of control register by microprocessors Programmable power-down Support power-low/battery-low detection 28-pin DIP/SOP package PRODUCT OVERVIEW The MX93000 Special Codec integrates key functions of the analog-front-end of Digital Answering Machine (DAM) into a single integrated circuit. The MX93000 is intended to provide a complete, low cost, and single chip solution for telephone applications requiring a single +5V power supply. The MX93000 Special Codec is especially powerful when applied to some DAM models which are intended to meet different countries' specifications in the same system hardware. User can achieve this goal by simply setting control firmware. This benifit will help DAM system makers to save developing time and R/D resources. The A/D D/A converters are implemented with 2ndorder sigma-Delta modulators. The on-chip digital filters, which are carried out with 16-bit and 2's complement format, are used to get the required frequency response of a PCM Codec. The Codec can support 8-bit u/A law and linear format. For the latter, it is 16-bit format with 14-bit...