AnsweredAssumed Answered

i.MX6DQ register settings.

Question asked by Takashi Takahashi on Feb 21, 2017
Latest reply on Mar 2, 2017 by Artur Petukhov

Dear community.

Our customer has question below. I am sorry that there are so many.

Question1

About  50.7.1 Regulator 1P1 Register (PMU_REG_1P1) of i.MX6DQRM.

1-1 The proper value of Brownout target of bi12 - 8 is not known.
       In the case how do I set it?
1-2  The setting value of bit 3 - 0 is not described.
         How do I set it?
         Also, what affects setting pull down?

 

Question2

About 50.7.2 Regulator 3P0 Register (PMU_REG_3P0) of i.MX6DQRM.

2-1 · The proper value of Brownout target of bi12 - 8 is not known.
          How do I set it?
2-2   The setting value of bit 2 - 0 is not described.
         How do I set it?
2-3   When not using USB, how can I set VBUS_SEL?
        Should it be OnTheGo rather than a host?

 

Question 3

About  50.7.3 Regulator 2P5 Register (PMU_REG_2P5) of i.MX6DQRM.

3-1  The proper value of Brownout target of bi12 - 8 is not known.
        How do I set it?
3-2  There is no description of the setting value of bit 18, bit 3 - 0.
        How do I set it?
        Also, what affects setting pull down?

 

Question 4

About 50.7.4 Digital Regulator Core Register (PMU_REG_CORE)

4-1  Is it possible to limit the current at LDO_ARM, LDO_SOC, LDO_PU startup time?
4-2   How do I set the appropriate voltage for each voltage?
         ARM is 792 MHz = min 1.15 V
         VPU is 264 MHz = min 1.15 V
        (VDD_ARM_CAP) - (VDD SOC) <100 mV
        (VDD_ARM_CAP) - (PU_CAP) <100 mV
        1.150 - 1.225 = - 0.075 = - 75 mV <100 mV: OK

 

Question 5  50.7.5 Miscellaneous Register 0 (PMU_MISC0)

5-1  Is it OK if STOP_MODE_CONFIG is set to "1" only, otherwise set to "0"?

 

Question 6  50.7.6 Miscellaneous Register 1 (PMU_MISC1n)

6-1 There was no description about w1c of bi-31-29
       Hou do I set ?
6-2  The setting value of bit 13 - 10 is not described.
        How do I set it?
6-3   Bit 9 - 0 relates to CCM, but here is how Should I set it?
       Is it necessary to match with the CCM register value?

 

Question 7 50.7.7 Miscellaneous Control Register (PMU_MISC2n)

7-1  Is Brownout target of bi18 - 16, bit 1 - 0 - 8, bit 2 - 0 correct in ReadOnly?
        If setting is necessary, the proper value is not understood. How do I set it?
7-2  For ## _ ENABLE _ ##, bit setting value is not described.
        How do I set it?
7-3  Do I have to match CCM settings on the  bit 31-30 of VIDEO_DIV, bit 23 of AUDIO_DIV_MSB, bit 15 of      

        AUDIO_DIV_LSB,bit 7 of PLL3_disable  ?
 7-4  I do not know the best value of REG # _ STEP_TIME. How do I set it

 

Thank you,

Best Regards.

Takashi

 

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