LMH5401IRMSR

LMH5401IRMSR Application Field and Working Principle

The LMH5401IRMSR is a versatile Integrated Radio Modem Sub-system (IRMSR) device ready for integration into a 3G/4G modem embedded device. It contains an integrated transceiver baseband, connecting the device\'s radio module to the MCU through Digital Audio Interfaces (DAI).

The transceiver baseband contains essential blocks for providing 3G/4G capabilities. The integrated media access control (MAC) block handles the 10 and 100 Mbps interface between the modem and MCU. It features comprehensive packet processing, including packet filtering, coexistence mitigation and mobility management solutions. The integrated baseband incorporates a low-IF tuner and Viterbi decoder to tackle the techniques used by the latest wireless standards. The IF blocks are joined by transparent multi-channel TDM/TDMA networks and addressable register interfaces, enabling flexible configuration through I2c and serial buses.

Application Field

The LMH5401IRMSR is designed for mobile device manufacturers that require full integration of 4G/3G capabilities, including LTE, HSPA+ and other cellular standards. The integrated radios offer a wide range of performance and features such as anti-jam creation techniques and adaptive power control (APC).

The device is suitable for a wide variety of applications, such as tablets, laptops, routers and other mobile devices, as well as IoT, automotive and industrial applications. The high performance of the UHF and LTE transceiver baseband, combined with flexible protocol support, makes it the ideal choice for a mobile Always On Internet device.

Working Principle

The LMH5401IRMSR is based on a dual-subsystem architecture, featuring a main, dedicated radio modem and a host processor. The radio modem is capable of transmitting and receiving data over a wide range of both 3G/4G and non-3G/4G wireless networks, as well as supporting TDM, TDMA and FHSS communication systems.

The host processor contains the core baseband sub-system, providing a host of features such as modulation and demodulation, data buffering and media access control. This block takes care of packet handling and control, enabling seamless connection to a wide variety of standard and non-standard services.

The two sub-systems are linked by a digital audio interface, allowing the main radio modem to access digital audio stream data, monitor radio frequencies and modulate signals. This audio interface is also used to send sampled data to the host processor’s runtime environment and allows efficient communication between the two blocks.

Conclusion

The LMH5401IRMSR is a powerful, versatile Integrated Radio Modem Sub-system (IRMSR) device that offers manufacturers a complete platform for integrating 4G/3G modems into their embedded systems. It offers a wide range of performance and features, such as anti-jam creation techniques and APC, as well as support for TDM, TDMA and FHSS communication systems.

The device is suitable for a wide variety of applications, from routers and mobile devices to automotive and industrial systems.