CMX7143 Multi-Mode Wireless Data Modem

CMX7143 FI-1.x
Designed for use in wireless data modems, the CMX7143 FI-1.x is a half-duplex modem with carrier sense and automatic control of transmit hardware, including RAMDAC for PA ramping. Carrier sense provides listen-before-talk capability, automatically reverting to receive if activity on channel is detected.
In receive, automatic frame sync detection provides acquisition of the received signal with minimal host intervention. Two different frame sync patterns may be searched for concurrently, with little need for preamble.
Other features include two auxiliary ADC channels with four selectable inputs and up to four auxiliary DAC outputs (with optional RAMDAC on the first DAC output, to facilitate transmitter power ramping).
The device has flexible powersaving modes.

FI-2.x
FI-2.x allows configuration of the IC to half-duplex 4-level FSK modem operation at data rates between 4.8 and 19.2kbps. Offering fast frame sync detection via Automatic Frame Sync Detection (AFSD), it can operate in raw or formatted packet data modes.
Other on-chip features include two auxiliary ADC channels with four selectable inputs and up to four auxiliary DAC outputs (with optional RAMDAC on the first DAC output, to facilitate transmitter power ramping).

CMX7143 FI-3.x
The CMX7143 FI-3.x is a half-duplex modem with carrier sense and automatic control of transmit hardware, including RAMDAC for PA ramping.
Carrier sense provides a listen before talk capability, automatically reverting to receive if activity on channel is detected.
In receive, automatic frame sync detection provides acquisition of the received signal with minimal host intervention. Three different frame sync patterns may be searched for concurrently.
Other features include two auxiliary ADC channels with four selectable inputs and up to four auxiliary DAC outputs (with an optional RAMDAC on the first DAC output, to facilitate transmitter power ramping).
The device has flexible powersaving modes.

The CMX7143 is available in both LQFP and VQFN packages.

The device utilises CML's proprietary FirmASIC® component technology. On-chip sub-systems are configured by a Function Image™: this is a data file that is uploaded during device initialisation and defines the device's function and feature set.