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SGTL5000 internal regulator for VDDD.

Question asked by Satoshi Shimoda on Feb 21, 2014
Latest reply on Feb 27, 2014 by Jose Alberto Reyes Morales

Hi community,

 

I have some questions about SGTL5000 internal regulator.

Please see Table 31 in SGTL5000 datasheet.

 

[Q1]

According to the reset values of LINREG_SIMPLE_POWERUP and LINREG_D_POWERUP, VDDD output automatically immediatelly after VDDIO or VDDA.

Is this correct?

 

[Q2]

Which power supply (VDDIO or VDDA) is power source of internal regulator for VDDD?

 

[Q3]

Could you let me know your reccomendataion for SGTL5000 power up sequence?

(e.g. supply VDDIO/VDDA -> internal regulator generates VDDD -> turn off internal regulator for VDDD via I2C -> supply external VDDD -> supply SYS_MCLK)

 

[Q4]

Do you have a block diagram about internal regulator for VDDD?

I think it helps us to understand internal regulator for VDDD.

 

 

Best Regards,

Satoshi Shimoda

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