Communication IC modem CMX7364

datawirelessRF

The CMX7364 is a flexible high performance wireless data modem featuring a high level of integration, including RF ADCs and DACs as well as additional low power data converters for monitoring and control purposes. At its heart a powerful DSP core is coupled to optimised hardware accelerators to provide efficient, low power implementation of data modem functionality, principally PHY and MAC layers. The device supports a range of formatted data modes as well as a raw mode that allows users to freely develop their own link protocols. The formatted data models include optimised forward error correction and pilot symbol insertion where appropriate. The CMX7364 provides a range of flexible digital interfaces to allow easy interfacing with microcontrollers and a pass through interface for control of RF circuits. The internal filters support channel bandwidths from 6.25 to 50 kHz enabling over air data rates of up to 40 ksamples/s. The design is capable of interfacing to different radio architectures but is ideally matched to CML’s CMX994 family of direct conversion receivers and CMX998 I/Q modulator with Cartesian linearization and built-in support for these devices via appropriate Function Images includes DC offset correction and AGC control. The CMX7364 operates from a single 3.3V supply voltage and is available in a 64VQFN package. Functionality of the CMX7364 is determined by loading a Function Image™ supplied by CML. The Function Image™ is downloaded on power up and configures the device for the required modulation scheme and associated parameters. Modem PHY Rx and Tx data converters Programmable channel filters Modem Lower MAC AFSD FEC Packet build