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RM44L920: How many GIO pins at the same time?

lifeng wang
Prodigy 130 points
Part Number: RM44L920
Other Parts Discussed in Thread: HALCOGEN

Tool/software: Code Composer Studio

There are 64 GIO in RM44L920-PGE according to the datasheet.

But we can not  find the register to configurate . The table in reference manual is wrong. RM44Lx is 144pins or 100pins , but the table 4-21 is 337pins.

Are there only 16 GIO pins at the same time?  Just 2 group IO register according to Table 23-1, and there are 8 pins in one group?

  • 0
    TI__Mastermind 21425 points
    Hello,
    You may use not only GIOA and GIOB as a GIOs. But GIOA and GIOB are capable to trigger interrupts. Whether pin could be used as a GIO can be seen in Section 4.2.1 and 4.2.2 in Device Datasheet. For example Table 4-1 shows that pin 86 could be used as AD1EVT (when in ADC mode) or as a GIO (Description column). In the same table pin 60 is stated to be only input of ADC module and can not be used as a GIO.
    The easiest way to set pin functionality is using HALCoGen. You can do it manually as well. For example, pin functionality of DCAN module is configured CAN TX IO and CAN RX IO control registers.

    Best regards,
    Miro