DSP Group’s DHAN-M module is based on the state-of-the-art DCX81, a second-generation DECT SoC. The DHAN-M module is designed for DECT-ULE applications that employ a processor external to the DHAN-M. The DHAN-M can serve as a DECT-ULE hub (also called a basestation) when loaded with a cordless module base set (CMBS) software image. This image includes standard DECT-ULE MAC-PHY connectivity as well as CAT-IQ functionality for traditional DECT telephony and HAN-FUN (ULE Alliance Standard) functionality for ULE (low-power packet mode). The DHAN-M module communicates with the host processor over a UART or USB interface; the part number indicates the chosen interface. Audio is transferred either via TDM (with control via UART) or via USB (Audio Class).
The DHAN-M can also be loaded with a software image that enhances the module with a traditional DECT “handset” profile for a cordless module handset (CMHS).
Features include excellent radio performance, with over 123 dB system gain and a printed antenna in the module (a second antenna port is provided and can be routed to an optional diversity antenna located elsewhere in the application housing). The radio covers all regional DECT bands, only a simple re-configuration of the EEPROM is required, and it is fully compliant with ETSI DECT, J-DECT, and ULE standards. Regulatory (EU, FCC) certification is pending. The radio is compact, measuring only 27.2 x 15.2 x 3.3 mm (including the RF shield height) and its operating temperature range is -40˚C to 85˚C.