Download CMX7164 Multi Mode Modem

CMX7164 Multi Mode Modem
CMX7164
RF Rx
RF Tx
ADCs
DACs
Aux
4 x ADC
Digital
Filters
FIFO
Modem
Digital
Filters
Configuration
Modulate
External Serial
Devices
Aux
2 x CLK
Synth
Aux
4 x DAC
Registers
Aux
4 x GPIO
C-BUS/SPI
master
FEC
CMX7164
C-BUS
Host
µC
ModulationSpecific Function
Image™
3.3V
3.3V
Multi Mode Modem
1
Brief Description
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-programmable
filters are also possible (contact CML Technical Support for further information). The 7164FI-1.x supports
up to 20kbps. Flexible bit rates support a wide range of applications requiring a selectable bit rate and
robustness. The 7164FI-1.x supports zero IF (I/Q) and two-point modulation (Mod1/2) transmit modes,
with zero IF receive mode. The GMSK/GFSK data is over-air compatible with the FX/MX909B and the
CMX7143FI-1.x.
The 7164FI-2.x supports 2-FSK, 4-FSK, 8-FSK, and 16-FSK modulations, root raised cosine filtered with
=0.2 with optional sinc filtering. User-programmable filters are also possible (contact CML Technical
Support for further information). The 7164FI-2.x supports up to 10ksymbols/s in a 25kHz channel. Flexible
bit rates support a wide range of applications requiring a selectable bit rate and robustness. The 7164FI2.x supports zero IF (I/Q) and two-point modulation (Mod1/2) transmit modes, with zero IF receive mode.
The data is over-air compatible with the FX/MX919B and the (CMX)7143FI-2.x. Additionally, 4-FSK coded
mode also supports RD-LAP channel coding which is over-air compatible with CMX969.
The 7164FI-4.x supports 4-, 16- and 64-QAM modulations, root raised cosine filtered with =0.2, 0.35 or a
user programmable filter (contact CML Technical Support for further information). The 7164FI-4.x supports
up to 96kbps in a 25kHz channel, with channel estimation and equalisation to provide robust performance
under realistic channel conditions. The 7164FI-4.x supports zero IF (I/Q) transmit and receive. QAM data
is over-air compatible with the CMX7163FI-4.x.
The 7164FI-6.x supports V.23 modulation at 1200 baud to provide half-duplex modem functionality for
interoperability with legacy equipment in the field. The 7164FI-6.x supports 1 to 8 byte data blocks with
start bit, stop bit and parity generation in transmit and start bit, stop bit and parity checking and removal in
receive.
Within this Datasheet and the accompanying User Manual any reference to FI1-x, FI-2.x, FI-4.x or FI-6.x is
intended to refer to 7164FI1.x, 7164FI-2.x, 7164FI-4.x or 7164FI-6.x respectively.
Forward error correction and raw modes are available and support user-defined packet structures to
support a range of applications. For greater flexibility, in FI-4.x only, different rate FEC modes are
 2015 CML Microsystems Plc
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