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About Ii and Ioz of AM335x

RY9983
Guru 10570 points

Hello,

I have refered DC Electrical Characteristics on AM335x datasheet Table 3-11 (sprs717e: P87-P90).
There is a description of Ii and Ioz.

1. What is the difference between Ii and Ioz?
  I think that:
   - The Ii means leakage current of Input pin.
   - The Ioz means leakage current of Output pin, I/O pin.
  Is my thinking correct?

2. What is the meaning of "Receiver disabled" on Ii?
   Is it RXACTIVE field setting of Pad conf register?

   I do not understand the meaning of leakage current when receiver is disabled.

Best regards, RY

  • 0
    TI__Guru**** 393215 points
    Hi RY,
     
    1.  II  is input leakage current with receiver disabled.
         IOZ is total leakage current through the terminal connection of a driver-receiver combination that may include a pullup or pulldown, with the driver output disabled and 
                the pullup or pulldown inhibited.
     
    2. Receiver disabled means as you say the RXACTIVE field setting of Pad conf register.
     
  • 0 in reply to Biser Gatchev-XID
    Guru 10570 points

    Biser-san,

    Thank you for your reply.

    Biser Gatchev-XID said:

    1.  II  is input leakage current with receiver disabled.

         IOZ is total leakage current through the terminal connection of a driver-receiver combination that may include a pullup or pulldown, with the driver output disabled and

                the pullup or pulldown inhibited.

    I am sorry. I have not been able to understand above meaning.

    I think that the "driver-receiver conbination" means I/O pin.
    Right?

    And, I think that the "with the driver output disabled" means the I/O pin is not driven any signal.
    Right?

    Best regards, RY

  • 0 in reply to RY9983
    TI__Guru**** 393215 points
    Hi RY,
     
    "Driver-receiver combination" means the output driver/input receiver I/O buffer, that's right.
    "With the driver output disabled" means that the output diver is tri-stated.
  • 0 in reply to Biser Gatchev-XID
    Guru 10570 points

    Biser-san,

    Great thanks!!
    I am very sorry for my late response.

    Best regards, RY