MX812 Datasheet | MX-COM

Features and Applications - Half-Duplex Voice Storage and Retrieval - Serial Bus µProcessor Control - On-Chip DRAM Controller - Up To 2 Minutes of High-Quality Recorded Audio - Answering Functions and Voice Notepad - Low-Power 5-Volt CMOS - Selectable Sample Rates and “Memory Size” MX812DW 28-pin SOIC MX812J 28-pin CDIP CLOCK AUDIO OUT VBIAS AUDIO IN EBIAS VDD VSS CHIP SELECT SERIAL CLOCK MAND DATA REPLY DATA IRQ CLOCK GENERATOR DEMOD CVSD CODEC DRAM CONTROL POWER METER STATUS REGISTER SERIAL C-BUS INTERFACE and LOGIC STORE/PLAY/WAIT MAND BUFFER MODE REGISTER Figure 1 - MX812 Voice Store and Retrieve Codec RAS1 A10/R2 A9 A8 EXTERNAL A7 DRAM A6 A5 1 or 2 x A4 1Mbit A3 DRAM Chips A2 A1 or A0 1 x D 4Mbit DRAM Chip DGND © 1997 MX-...