Description
The MT9196 Integrated Digital Phone Circuit (IDPC) is designed for use in digital phone products. The device incorporates a built-in Filter/Codec, digital gain pads, DTMF generator and tone ringer. Complete telephony interfaces are provided for connecting to handset and speakerphone transducers. Internal register access is provided through a serial microport compatible with various industry standard micro-controllers.

FEATUREs
• Programmable µ-Law/A-Law CODEC and Filters
• Programmable CCITT (G.711)/sign-magnitude coding
• Programmable transmit, receive and side-tone gains
• Digital DTMF and single tone generation
• Fully differential interface to handset transducers
• Auxiliary analog interface
• Interface to ST-BUS/SSI (compatible with GCI)
• Serial microport control
• Single 5 volt supply, low power operation
• Anti-howl circuit for group listening speakerphone applications

APPLICATIONs
• Digital telephone sets
• Wireless telephones
• Local area communications stations