MC10EP445FAR2

The MC10EP445FAR2 is an analog multiplexer/demultiplexer used in bi-directional communication between two ICs of two isolated domains. This IC operates in two different modes: serial-to-parallel or parallel-to-serial. It is capable of managing different active signals like SUSPEND or NAK, which are enabled and disabled depending on the application.

Application Field

The MC10EP445FAR2 is typically used to communicate in applications such as clock gating, time-barrier synchronization and/or data exchanges between two isolated domains as for instance in watchdogs, reset controllers and power sequencing circuits. For example, it can be used for synchronization in application-specific integrated circuits (ASICs), microprocessors, digital signal processors (DSPs), or field programmable gate arrays (FPGAs).

Working Principles

When the MC10EP445FAR2 is used in a serial-to-parallel mode, signals are provided to a serial port, entered through an asynchronous logic interface and then transferred to internal buses. Internal logic enables the data latch at the generation of a valid clock and control bit. Then the data is passed to a parallel data output with separate buffers for each data line. With this, the serial-to-parallel conversion is completed.

The MC10EP445FAR2 can also be used in a parallel-to-serial mode. In this case, the data provided to a parallel port is entered through buffers and stored internally. The stored data can be shifted out serially in an asynchronous logic interface. The same control bit that is used in the serial-to-parallel operation mode is utilized to start the datashift sequence. This is done through an internal logic circuit, which detects when the data latch should be enabled or disabled. Therefore, the parallel-to-serial conversion is fulfilled.

In both operations modes, an integrated feedback path is present, allowing the user to control and monitor the MC10EP445FAR2 state through the status output line. This output also provides the data-validity indication when data has entered the parallel port in serial-to-parallel computing mode.

In addition, the MC10EP445FAR2 IC is equipped with an asynchronous logic interface that does not require extra pins from the power supply, since all its inputs and outputs are powered from a single supply voltage (VCC). Furthermore, this IC can be operated using the CPLD that provides a compact and reliable solution for bi-directional communication between two ICs in two isolated domains.

In summary, the MC10EP445FAR2 is an analog multiplexer/demultiplexer with a wide range of application fields and useful features. Its useful design functions like clock gating, time-barrier synchronization and/or data exchanges between two isolated domains make this IC an ideal solution for synchronization in ASICs, microprocessors, DSPs or FPGAs. Additionally, the high configurability and user-controlled feedback path allow the user to monitor the status of the IC in both serial and parallel modes.