DESCRIPTION
The MX812 is a half-duplex VSR Codec, which when connected to an audio processing microcircuit (such as the MX816, 826 or 836), provides the storage and recovery of speechband audio in attached Dynamic RAM. The addition of this device will enhance the communications system by providing cellular radios with Answering Functions, “Message-Notepad” and general announcement cababilities.

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 VoiceNotepad
• Low-Power 5-Volt CMOS
• Selectable Sample Rates and “Memory Size”