Digital radio baseband processor IC

CML has launched its latest digital radio baseband processor IC, the CMX981. A low-power device, it is an advanced digital-radio baseband processor combined on-chip with a voice CODEC/processor and an audio PA. It interfaces the analog and digital sections of a digital radio system and performs many of the radio's critical DSP-intensive functions.

The overall functionality of this product within a digital radio application relieves the host processor of a significant amount of processing, therefore allowing for an overall reduction in power consumption. Additionally, less powerful DSPs can be considered.

The device supports digital fixed, portable and mobile TETRA, APCO 25, Tetrapol and the Japanese RCR and ARIB system applications, and is sufficiently flexible for use in other demanding digital radio systems. Integrated functions, smaller processor requirement, less PCB area, fewer components and minimised power consumption all lead to reduced design times and lower project and operational costs.

In its transmit path it offers all the functions required to convert digital 'symbol' data into suitably filtered analog I and Q signals for external up-conversion and transmission. Also available to the Tx function is digital control of output amplitudes and offsets; all in-path digital filters are fully programmable.