Flexible Multimode Wireless Data Modem for MSM, SDR
CML Microcircuits introduced its CMX7143 integrated and adaptable multi-mode wireless data modem built on the company’s FirmASIC component technology. It is said to be able to implement different wireless data schemes, with ease, when required. The CMX7143 initially offers 4-Level FSK operation, but the chip is configurable via special Function Image data files, enabling the implementation of further wireless data schemes, simply by swapping Function Image files. The chip is supported by a roadmap of future Function Image files, the first of which being GMSK operation. CML’s Function Image files configure on-chip sub-systems, and are uploaded during device initialization <md> the product’s function and feature set is then defined. A Function Image can be loaded automatically from an external EEPROM or host microcontroller over the built-in C-BUS serial interface facilitating in-the-field upgrades if desired. Features include 4.8 kbps to 19.2 kbps data rates, AFSD (Automatic Frame Sync Detection), flexible raw and packet data modes, soft decision decoding, RSSI processing (for Listen Before Transmit Applications) and a C-BUS serial interface to the host microcontroller. Additionally, auxiliary ADCs with multiplex inputs, auxiliary DACs and auxiliary system clocks are provided to aid design and operational flexibility. The CMX7143 is available in a small, low power (3.0 V to 3.6 V with flexible powersave modes), 48-pin VQFN or LQFP package.