Z0220112VSC

Product Summary

The Z0220112VSC is a synchronous single-chip modem solution that provides a means to construct a V.22bis modem capable of 2400 bps full duplex over dial-up lines. The Z0220112VSC is specifically designed for use in embedded modem applications where space, performance, and low power consumption are key requirements. Operating over the Public Switched Telephone Network (PSTN), the Z0220112VSC meets the modem standards for V.22bis, V.22, V.23, V.21, Bell 212A, and Bell 103. A typical modem application can be made by simply adding a control microprocessor (host), phone-line interface, and DTE interface. The Z0220112VSC performs HDLC framing at all speeds. This capability eliminates the requirement for an external Serial Input/Output (SIO) device for Data Terminal Equipment (DTE) in products incorporating error control.

Parametrics

Z0220112VSC absolute maximum ratings: (1)Supply Voltage, Vcc: -0.3 to +7.0V; (2)Operating Temperature, TOPR(com): -0 to +70℃; (3)Storage Temperature, TSTG: -65 to +150℃.

Features

Z0220112VSC features: (1)Combined data pump and Analog Front-End (AFE); (2)Full duplex data modem throughput to 2400 bps -ITU V.22bis, V.23, V.22, V.21-Bell 212A and Bell 103; (3)FSK (V.23 1200/75 bps, V.21/Bell 103 300 bps), DPSK (V.22/Bell 212A 1200 bps), or QAM encoding (V.22bis 2400 bps); (4)Automatic handshake plus full manual control over handshake timings; (5)Scrambler/descrambler functions plus selectable control over internal data pump functions; (6)Programmable Bi-Quad tone detectors for call-progress tone detection; (7)Adaptive equalization to compensate for a wide variety of line conditions; (8)Programmable transmit attenuation and selectable receive threshold; (9)Fully programmable call-progress detectors, signal quality detectors, tone detectors, tone generators, and transmit signal levels which aid in rapid country qualifications; (10)Simultaneous tone generation and detection; (11)Host port allows direct parallel interface to standard 8-bit microprocessors; (12)HDLC framing at all speeds; (13)On-chip peripherals-Full-duplex voice band AFE with 12-bit resolution -Synchronous Serial Interface port -Eye pattern interface; (14)Low power consumption: 50 mA typical; (15)44-Pin PQFP and PLCC packages; (16)Single +5 VDC power supply; (17)0℃ to +70℃ commercial temperature range.

Diagrams