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AFE4405: Check external or internal clock operation

Ryuji
Guru 20090 points
Part Number: AFE4405

Hello

Is there any way to check if the AFE4405 is operating in an external clock mode and it is working with an external clock without problems and has not operated with an internal clock?
Is it ok to think that there is no problem if bit [9] OSC_ENABLE = 0 in Register 23h?
When OSC_ENABL = 0 and there is no external clock, will it operate automatically with internal clock?

Best Regards,
Ryuji 

  • 0
    TI__Genius 12575 points
    Hi Ryuij,

    When 0x23<9> = 1, AFE4405 will operate in internal oscillator mode. If this bit is 0, that means AFE expects an external clock.
    To find the mode in which AFE is operating, you can read 0x23<9>.
    No, when OSC_ENABLE (0x23<9>) = 0 and external clock is not given, AFE doesn't switch to internal clock mode. You have go and set OSC_ENABLE bit to put the AFE in internal clock mode.

    Regards,
    Prabin