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TPS659037 / Question

S.Satoshi
Guru 21685 points
Other Parts Discussed in Thread: TPS659037

Hi,

Please let me ask question about TPS659037 as below.

  1. LDOVRTC_OUT is always output when VCC1 is applied and so there is not ON/OFF control function. Is my understanding correct?
  2. SMPSs and LDOs are controlled to power up and down by PWRON pin input. Is my understanding correct? I'm referring Figure 5-19 in DS page 64.
  3. Can we remove external 16.384-MHz crystal if RTC function is not used?
  4. Regarding Table 5-7, can we access ID_I2C2 = 0: 0x12 via ID_I2C1?
  5. Regarding Table 5-13, OTP CONFIGURATION can be selected by BOOT0 pin input. Is my understanding correct?

Best Regards,
Sonoki / Japan Disty

  • 0
    TI__Genius 16410 points

    Hello Sonoki-san,

    > LDOVRTC_OUT is always output when VCC1 is applied and so there is not ON/OFF control function. Is my understanding correct?
    [Karl] Yes, this is correct.

    > SMPSs and LDOs are controlled to power up and down by PWRON pin input. Is my understanding correct? I'm referring Figure 5-19 in DS page 64.
    [Karl] PWRON is one of the ways to power up and down the PMIC.  Please see sections 5.4.2.1 and 5.4.2.2 for the full list of ON requests and OFF requests.

    > Can we remove external 16.384-MHz crystal if RTC function is not used?
    [Karl] No, whether or not the crystal is required is defined by OTP.  For TPS6590376 and TPS6590377, the OSC16M_CFG bit is 0, which means the crystal is required for the device.  Please see section 6.2.2.9 for more details.

    > Regarding Table 5-7, can we access ID_I2C2 = 0: 0x12 via ID_I2C1?
    [Karl] Yes, I2C1 can access all registers including the DVS registers.  I2C2 can only access the DVS registers.

    > Regarding Table 5-13, OTP CONFIGURATION can be selected by BOOT0 pin input. Is my understanding correct?
    [Karl] Yes, this is correct.  For TPS6590376 and TPS6590377, BOOT0 selects the DDR (SMPS3) voltage.  More details can be found in the TPS659037 User's Guide.


    Regards,
    Karl