Z0220516PSCR3641

Overview

The Z02205 is a V.22bis modem controller designed for embedded applications requiring low power consumption and small size. It features an on-chip ROM containing the AT command set interpreter, eliminating the need for external memory. The device supports tone or pulse dialing, call progress monitoring, handshake controls, guard tones, line quality monitoring with auto-retrain, and Type-I Caller ID. It offers dynamic power management and includes a Watch-Dog Timer (WDT) and Power-On Reset (POR). The Z02205 provides a glueless interface to the Z02201 data pump and operates in both SYNC and ASYNC modes over dial-up telephone connections.

Feature Summary

• Integrated AT command set interpreter stored in on-chip ROM
• Glueless parallel interface to Z02201 modem data pump
• Supports automatic dialing, answering, and retrain functions
• Includes dynamic power management and watchdog timer

Applications

• Embedded V.22bis modem systems
• Low-power communication devices
• Small-size telecommunication equipment

Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the Z02205 is available in 28-pin DIP and SOIC packages. Confirm the temperature range requirements against the commercial grade specification of 0°C to +70°C. Ensure the firmware configuration aligns with the target country's telephone network standards, as standard samples are tailored for North America.

Selection Notes

Select the Z02205 when a complete V.22bis modem solution is needed with minimal external components. It is suitable for designs prioritizing low power consumption and compact form factors. Consider the availability of the Z02201 data pump for the complete system implementation. Verify that the operating voltage range of 4.5V to 5.5V fits the system power supply constraints.

Part Context

The Z02205 serves as the control unit for V.22bis modems, handling protocol execution and terminal interface commands. It complements the Z02201 data pump, which handles the actual signal modulation and demodulation. Together, they form a complete modem solution requiring only a phone line interface and DTE connection. This architecture reduces design complexity and component count compared to discrete implementations.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.