CMX7143 FAQs

[ Package Information FAQs ]

Function Image™ Loading Options
Q. I am about to start a design using one of your FirmASIC® based products, what is the most suitable method of storing the associated Function Image™ in my project?

A. Our FirmASIC® based devices require a Function Image™ to configure their on-chip sub-systems.
This is a data file that is uploaded during device initialisation and defines the device's function and feature set. The Function Image™ can be loaded automatically from external serial EEPROM via a dedicated SPI bus or from a host µController over the built-in C-BUS serial interface.It is also possible with two specified memory devices to update the serial memory stored Function Image™ via the C-BUS and SPI interface.
CML supplies a dedicated Thick Stub Function Image™ to enable this capability. The linked flow diagram is an aide-memoir in that it makes it plain what is possible when choosing the most suitable method of storing a Function Image™ for your project.
[Function Image™ Loading Options]

For 7143FI-1.x
Q. I am about to evaluate the 7143FI-1.x (GMSK/GFSK Modem) using the PE0401, what recommendations can you give me?

A. Operation is straightforward when following the instructions in the user manuals and FAQs, however a modest modification to the PE0401 is recommended.
The baseband signal requires a Tx-to-Rx channel with a relatively flat frequency response. To achieve this with the PE0401 kit from the default build will require the removal and replacement of certain capacitors.

For 7143FI-2.x
Q. I am about to evaluate the 7143FI-2.x (4FSK Modem) using the PE0401 what recommendations can you give me?

A. Operation is straightforward when following the instructions in the user manuals and FAQs however a modest modification to the PE0401 is recommended.
The baseband signal requires a Tx-to-Rx channel with a relatively flat frequency response. To achieve this with the PE0401 kit from the default build will require the removal and replacement of certain capacitors.