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AIF2 Module Error Handling

asimburak1984
Intellectual 515 points

Hello,

According to the CPRI Standard there are 4 kind of link alarm indicators (LOS, LOF, SDI and RAI) which can be handled by the AIF2 EE Submodule to generate an interrupt etc. So, what I couldnt track so far is:

1) For example according to the CPRI Spec 4.2 a LOS occurs when at least 16 8B/10B violations occur. Does the PD automatically realizes an error condition occured and automatically sets the EE-Registers to generate an interrupt? Or does these processes have to programmed by the user?

2) Afterwards an Interrupt occurs, does the user have to programm the functionalities to set the LOS-Bit in the CPRI Tx Frame Z.130.0 and inform the transmitter that a LOS occured at the receiver? Or is this written to some register at the AIF2 Module so the CPRI Tx Frame contains the detected error condition automatically?

Best Regards

Burak

  • 0
    TI__Expert 4740 points

    Burak,

    you need to program EE module to let PD or RM report catched errors to EE module and the event could be delivered to interrupt controller. EE module has ee_XX_en_ev0 , ee_XX_en_set_ev0 and ee_XX_en_clr_ev0 registers to cofigure this. AIF2 EE supports two type of EVENT (evt0 and evt1) and you can map these event to the interrupt input of CP_INTC or CorePac host interrupt. (get more info from our documentation about interrupt)

    2) Afterwards an Interrupt occurs, does the user have to programm the functionalities to set the LOS-Bit in the CPRI Tx Frame Z.130.0 and inform the transmitter that a LOS occured at the receiver? [AB] No, the receiver HW will set those field automatically but your application must handle the situation if you want to let the transmitter know the error by checking error status of the reciever. (you can use EE error event report for this) 

    Or is this written to some register at the AIF2 Module so the CPRI Tx Frame contains the detected error condition automatically? [AB] I don't understand this question. everything is in our current UG. please have more time with that doc.

    Regards,

    Albert

  • 0 in reply to Albert Bae
    Intellectual 515 points

    Hello Albert,

    thank you for answer. I will look up the details in the user guide.

    Best Regards

    Burak