FCC

Detect when analog input signal crosses 10-bit threshold value

Since R2024a

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  • FCC block

Libraries:
Embedded Coder Support Package for Infineon AURIX TC4x Microcontrollers / AURIX TC4x

Description

The FCC block models a fast compare comparator (FCC) that detects when the value crossings of an analog input signal crosses a programmable 10-bit threshold value. The block outputs the status of the boundary flag as a Boolean value.

Ports

Input

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Specify the reference threshold value for comparison at this port.

Dependencies

To enable this port, set the Mode parameter to Normal or Hysteresis and select the Enable threshold input parameter.

Data Types: single

Specify the step width of the ramp at this port.

Dependencies

To enable this parameter, set the Mode parameter to Ramp and select the Enable ramp configuration inputs parameter.

Data Types: single

Specify the step size of the ramp at this port.

Dependencies

To enable this parameter, set the Mode parameter to Ramp and select the Enable ramp configuration inputs parameter.

Data Types: single

Specify the start value of the ramp at this port.

Dependencies

To enable this parameter, set the Mode parameter to Ramp and select the Enable ramp configuration inputs parameter.

Data Types: single

Specify the end value of the ramp at this port.

Dependencies

To view this parameter, select the Mode parameter as Ramp and ensure the Enable ramp configuration inputs parameter is enabled.

Data Types: single

Output

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The block outputs the status of the boundary flag during a threshold update as one of these values:

  • 0 — Boundary flag is inactive

  • 1 — Boundary flag is active

Data Types: Boolean

This port returns the threshold value that the FCC reaches at the end of the ramp mode.

Dependencies

To enable this port, set the Mode parameter to Ramp and select the Enable threshold output parameter.

Data Types: single

Parameters

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Select one of these operation modes:

  • Normal— Compare the threshold reference value against the analogue input signal. If you enable the Enable threshold input parameter, the comparator uses a threshold value until a hardware or software trigger occurs. If not enabled, the block sets the initial threshold value to 5V.

  • Hysteresis— Compare the upper and lower limit threshold values against the analogue input signal. In this mode, you can update the new threshold limit values using threshold trigger or software trigger events.

  • Ramp— Compare the ramp threshold signal against the analogue input signal. You can configure the start value, end value, step size (indicating the increment in voltage for every step) and step width (indicating the increment in time for every step) of the ramp signal. Control the start and end of ramp mode using below cases:

    • Start ramp on software trigger and end on reaching the End of Threshold Value (ETV)

    • Start ramp on software trigger and end on receiving a hardware trigger or reaching the ETV value

    • Start ramp on software trigger and end on Boundary flag transition or reaching the ETV value

    • Start ramp on hardware trigger and end on reaching the ETV value

    • Start ramp on hardware trigger and end on receiving another hardware trigger or reaching the ETV value

    You can use this mode of operation to control input signal behavior during system soft start or power-down operation without software intervention.

Normal, Hysteresis or Ramp.

Selecting an operation mode enables options in the Threshold tab of the FCC Peripheral Configuration.

Select this parameter to configure the threshold input port.

Dependencies

To enable this parameter, set the Mode parameter to Normal or Hysteresis.

Select this parameter to enable the input ports for configuring the ramp mode.

When you select this parameter, the block configures the stepWidth, stepSize, rampStart, and rampEnd input ports.

Dependencies

To enable this parameter, set the Mode parameter to Ramp.

Select this parameter to configure the threshold output port.

Dependencies

To enable this parameter, set the Mode parameter to Ramp.

Version History

Introduced in R2024a

See Also