已解决! 转到解答。
Q1 ANS
PMIC P/N:MVR5510AMBAHES
Since the P/N is a preprogrammed IC we have not done any programming.
Q2 ANS
Our observation is the PMIC is not staying in debug mode and it's getting resetted.
Can you help us to resolve this issue?
Q1 ANS
PMIC P/N:MVR5510AMBAHES
Since the P/N is a preprogrammed IC we have not done any programming.
Q2 ANS
Our observation is the PMIC is not staying in debug mode and it's getting resetted.
Can you help us to resolve this issue?
Please set VR5510 in debug mode to check it can start up correctly.
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The VR5510 provides a means of evaluating the device in Debug mode. Debug mode
allows users, via the I2C interface, to access the OTP register set, modify the registers,
and test device functions. During Debug mode all regulators remain off.
The VR5510 enters in Debug mode with the following sequence:
1. Apply VDDOTP pin > 5 V.
2. Apply VSUP1/2 > VSUP_UVH and PWRON1 > PWRON1VIH or PWRON2 >
PWRON2VIH.
3. The device now starts in Debug mode, ready for debugging or OTP programming.
4. Apply VDDOTP = 0 V to turn on the device with the modified configuration.
Thank you for the valuable support you have provided. Now by making sure the following sequence
"1. Apply VDDOTP pin > 5 V.
2. Apply VSUP1/2 > VSUP_UVH and PWRON1 > PWRON1VIH or PWRON2 >
PWRON2VIH."
We are able to enter the debug mode and the watchdog has been disabled.
I have one doubt remaining
Q) I saw this in the datasheet "During Debug mode all regulators remain off." As per my understanding In OTP mode, we will not get the voltage rails right? & in debug mode we will get the output rails? Is that right ?
In the above flow chart ,there is step named disable WD in the INIT phase,after set this no need WD refresh:
The watchdog window
can only be disabled during the INIT_FS phase. A watchdog disable takes effect when
INIT_FS closes.
Had queries on PMIC watchdog enable:
1) Is it also done in INIT_FS phase?
2) Whether INIT_FS phase can be entered during application initialization stage OR Is it restricted to be done only by bootloader during boot up?
We tried to configure PMIC watchdog from AUTOSAR side: Is it the right way?