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Original question:

DIT4192: How to update channel status buffer

DIT4192: AES3 format Byte4 bit6-3 Sampling Frequency

Mochi
Genius 3885 points
Part Number: DIT4192

Hello, 

AES3 format has channel status data bit to show sampling frequency on Byte4 bit6-3 as attached AES3 specification.

In the case of DIT4192, those bit in Channel Status Buffer are "reserved" as attached datasheet screenshot.

Can we write data to those bit to transmit appropriate frequency rate even "reserved" status?

 

Regards,

Mochizuki

  • 0
    TI__Mastermind 20850 points

    Hello, you can read but not write into  slots that are "reserved". 

    Regards,

    Arash

  • 0 in reply to Arash Loloee
    Genius 3885 points

    Hello Arash,

    Thank you for your prompt reply.

     

    Is that meaning DIT4192 itself will set appropriate frequency rate to Channel Status bit following inputted PCM data rate?

    In another word, the customer cannot modify Channel Status bit from this automatic setting function.

    To select the device for new design, the customer wants to confirm this matter.

    If we can buy a EVM the customer will read out those bit, but there is no inventory the EVM.

    Is there any way to confirm it?

     

    Regards,

    Mochizuki

  • 0 in reply to Mochi
    TI__Mastermind 20850 points

    Hello, These are very mature devices and we don't have any EVM in TI samples.  user can not write into reserved slots but  the device itself writes the frequency rate to channel status and user can read it.

    Regards,

    Arash

  • 0 in reply to Arash Loloee
    Genius 3885 points

    Hi Arash,

    Our customer give us valuable verification result of this matter.

    They have used existing EE which employed DIT4192. Channel Status bit is changed by inputted PCM data sampling rate, as stated "COMPLIANT WITH AES-3, IEC-60958, AND EIAJ CP1201 INTERFACE STANDARDS." on the datasheet.

    BTW for the new socket of this matured device, do you see the issue for more than 5-years products life time from now?

    Regards,

    Mochizuki  

  • 0 in reply to Mochi
    TI__Mastermind 20850 points

    Hello Mochizuki  , Thanks for info.

    I don't predict the end of life time to be near  with these devices .   I will double check with our marketing and  if I hear otherwise I will report to you. So unless you hear from me in the next few days, you  can be confident the end of life is not near.

     

    Regards,

    Arash

  • 0 in reply to Arash Loloee
    Genius 3885 points

    Arash,

    Thank you for your comment.

    We are going to utilize DIT4192 for this project.

    Regards,

    Mochizuki