Description
The MT9160B/61B 5V Multi-featured Codec incorporates a built-in Filter/Codec, gain control and
programmable sidetone path as well as on-chip anti-alias filters, reference voltage and bias source.
The device supports both ITU-T and sign-magnitude A-Law and µ-Law requirements. Complete telephony interfaces are provided for connection to handset transducers. Internal register access is provided through a serial microport compatible with various industry standard micro-controllers. The device also supports controllerless operation utilizing the default register conditions.
The MT9160B/61B is fabricated in Zarlink's ISO2-CMOS technology ensuring low power consumption and high reliability.

FEATUREs
• Improved idle channel noise over MT9160
• MT9161 version features a delayed framing pulse in SSI and ST-BUS modes to facilitate cascaded devices
• Programmableµ-Law/A-Law Codec and Filters
• Programmable ITU-T G.711/sign-magnitude coding
• Programmable transmit, receive and side-tone gains
• Fully differential interface to handset transducers - including 300 ohm receiver driver
• Flexible digital interface including ST-BUS/SSI
• Serial microport or default controllerless mode
• Single 5 volt supply
• Low power operation
• ITU-T G.714 compliant

APPLICATIONs
• Digital telephone sets
• Cellular radio sets
• Local area communications stations