DESCRIPTION
The 73M2901CE low speed modem integrates a data pump, controller, and analog front end in a 3.3 V device with a powerful "AT" command host interface. The modem reduces external component count/cost by incorporating many features like parallel phone detect, Line-In-Use and Ring detection in software without requiring additional components.
The device is a "one chip fits all” solution for applications including set-top boxes, point-of-sale terminals, automatic teller machines, utility meters, vending machines and smart card readers.
Another distinctive feature of this device is pin compatibility with Teridian’s flagship embedded hard modems, the 73M2901CL, and the 73M1903 soft modem AFE. This offers customers a cost effective method to design for both hard or soft modem solutions in the same system as a risk-free cost reduction path.
Complete support, modem reference designs and error correction software are part of the solution offered by Teridian. Our in-house application engineering team is here to help meet your international certification needs.

FEATURES
• True one chip solution for embedded systems
• As low as 9.5 mA operating with standby and power down mode available
• Power supply operation from 3.6 V to 2.7 V
• Data modes and speeds: V.22bis – 2400 bps V.22/Bell212 – 1200 bps V.21/Bell103 – 300 bps V.23 – 1200/75 bps (with PAVI turnaround) Bell202 – 1200 bps Bell202/V23 1200 bps FDX 4-wire operation
• V.22/Bell 212A/V.22bis synchronous modes
• International Call Progress support: FCC part 68, CTR21, JATE, etc.
• DTMF generation and detection
• Worldwide Caller ID capability U.S. Type I and II support
• EIA 777A compliant
• SIA-2000 compliant
• SMS messaging support
• On chip hybrid driver
• Blacklisting capability
• Line-In-Use and Parallel Pick-Up (911) detection with voltage or low cost energy detection method
• Incoming ring energy detection through CID path; no optocoupler circuitry required
• Manufacturing Self Test capability
• Backward compatible with 73M2901CL
• Packaging: 32 lead QFN, 32-pin TQFP