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[FAQ] CLA: Which peripheral registers can the CLA access directly?

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Q: Which peripheral registers can the CLA access directly?

Lori Heustess
C2000 Software Engineering

  • A:

    The answer is C2000 MCU family dependent. In general, more recently released device families support CLA access to more peripherals. Refer to the device-specific datasheet for specific connection information.  The list below indicates where to look in the datasheet:

    • The device block diagram: indicates which peripherals are connected to the CLA bus.
    • The device level memory map: which memory blocks can be configured for CLA access   
    • The external interface (EMIF) memory map: indicates any memory regions the CLA can access
    • The peripheral register memory maps: which specific peripheral registers the CLA has access to

    Note: if there is more than one CLA on a device, they may not have the ability to connect to all of the same peripherals.  

    Some examples are given below.


    2803x:
    The CLA has direct access to the ADC result, ePWM+HRPWM, and comparator registers.

    2806x:
    The CLA has direct access to the ADC result, ePWM+HRPWM, eCAP, eQEP and comparator registers.

    2807x:
    The CLA has direct access to the the ADC module(s) (including results), ePWM+HRPWM, eCAP, eQEP, comparator subsytem, DAC subsystem, SPI, McBSP, uPP, EMIF, GPIO

    2837x:
    The CLA(s) has direct access to the the ADC module(s) (including results), ePWM+HRPWM, eCAP, eQEP, comparator subsytem, DAC subsystem, SPI, McBSP, uPP, EMIF(s), GPIO

    Click here for more CLA FAQs and resources.

    Lori Heustess
    C2000 Software Engineering

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