CMX7164 - Consumer Microcircuits Limited

CMX7164 Multi Mode Modem

The CMX7164 Multi Mode Modem is a half-duplex device currently supporting GMSK/GFSK, 4/16/64QAM, 2/4/8/16-Level FSK and V.23 modes in multiple channel spacings under host control. Its *Function Image (FI) is loaded to initialise the device and determine modulation types. The 7164FI-1.x supports GMSK/GFSK modulation, with BT=0.5, 0.3, 0.27, or 0.25. User-prog.

Features

 Half-duplex modem supports multiple modulations and channel spacings
 7164FI-1.x o GMSK/GFSK with BT=0.5, 0.3, 0.27 or 0.25 o Over-air compatible with FX/MX909B and CMX7143FI-1.x o Two frame sync detectors o Automatic frame sync detect o Rx carrier frequency correction o Receive signal quality measurement
 7164FI-2.x o 2/4/8/16-FSK up to 10ksymbols/s in 25kHz e.g. 40kbps for 16-FSK o Compatible FEC for CMX7143 and FX/MX919B 4-FSK (not 2-FSK) o Over-air compatibility with CMX969 for RD-LAP Tx/Rx o Two frame sync detectors o Automatic frame sync detect o Rx carrier frequency correction o Rec.