CDPD MAC And Data Pump Processor

The highly integrated CMX989 CDPD MAC and Data Pump Processor integrates complex CDPD MAC and physical layer functions to serve as a core engine for high performance, low power CDPD terminal designs. MAC layer functions decouple the host CPU from the CDPD airlink to simplify and reduce CDPD protocol stack programming, free CPU capacity for applications, eliminate Interface components, and allow CPU sleep time for power savings. Physical layer functions mate MAC layer to baseband Radio signals with minimal host involvement. MAC and physical layer functions are intelligently coupled to meet airlink Timing requirements. For example: Tx emissions automatically start in synchronisation with Forward Channel busy/idle status. The Rx CDPD frame FIFO is automatically managed to wait for valid synchronization to occur when first started and after lost signal recovery. By Consumer Microcircuits Limited
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CMX989 Application circuits
CMX989 circuits
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