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PCM9211: How to Hardware Control

Hayashi
Expert 1840 points
Part Number: PCM9211


Hi teams,

My customer wants to know the point of different from SPI/I2C to H/W CNT.
What constraint does it have?
ex:cannot Gain setting/ cannot change analog to SPDIF etc...
Best regards
Hayashi
  • 0
    TI__Expert 5645 points

    Hi Hayashi-san,

    Since PCM9211 is quite complex device w DIR/DIT/ADC and multiple MPIO ports, typical use case for this device entails configuring several registers to configure the device to achieve the given use case. This can be achieved using software control mode where we configure the device using the SPI or I2C.

    There is no Hardware control for this device (or at least there is no common use case) unless the default routing works for a given application. This would mean that we can use PCM9211 in default mode [as outlined in 8.3.8.9 Default Routing Function (After Reset)] and hence we do not need to configure any register.

    Thanks & Best regards,

    Ravi

  • 0 in reply to Ravi Patil
    Expert 1840 points
    Hi Ravi -san,
    Thank you for your reply.
    I understand the PCM9211 don't  have the hardware control.
    I have a question here.
    There are "SPI, I2C or Hardware Control Modes" in the item of Other Function Features 
    as a feature of the first page of the data sheet, but what is the control on the hardware described here?
    Best regards
    Hayashi
  • 0 in reply to Hayashi
    Guru 36540 points

    Hi Hayashi-san,

    As Ravi-san mentioned, this means that PCM9211 can be used without accessing the control registers after the power-on reset or external reset event.
    However, it is possible to control only a power-down function with /RST pin if using PCM9211 with the hardware mode.

    Best regards,
    Kato

  • 0 in reply to Sadanori Kato
    Expert 1840 points
    Kato san

    Thank you for your support.
    I understand the function.

    Best regards
    Hayashi