The CARRIER_PWR_ON signal is 0V,why?
Reference to the NVIDIA development kit, we made a number of Carrier Board , one of the problems is CARRIER_PWR_ON signal voltage is 0, so Carrier Board power subsystemis not normal work why?
Reference to the NVIDIA development kit, we made a number of Carrier Board , one of the problems is CARRIER_PWR_ON signal voltage is 0, so Carrier Board power subsystemis not normal work why?

#1
Posted 08/29/2017 02:33 AM   
Please check the power up sequence of your board as figure 4 in OEM DG showing to make sure the timing of all signals are correct. Also please review your board design with checklist in chapter 14 of OEM DG, especial to power part to make sure no design mistake.
Please check the power up sequence of your board as figure 4 in OEM DG showing to make sure the timing of all signals are correct. Also please review your board design with checklist in chapter 14 of OEM DG, especial to power part to make sure no design mistake.

#2
Posted 08/29/2017 07:07 AM   
I'm sure the design is no mistake ,The same batch produced a number of Carrier Board, only one Carrier Board appeared on this issue at the same time I'm sure the tx1 Module is ok
I'm sure the design is no mistake ,The same batch produced a number of Carrier Board, only one Carrier Board appeared on this issue at the same time I'm sure the tx1 Module is ok

#3
Posted 08/30/2017 06:28 AM   
How many modules do you have? Please do cross check to make sure the failure is on module or carrier board.
How many modules do you have? Please do cross check to make sure the failure is on module or carrier board.

#4
Posted 08/30/2017 06:35 AM   
Almost 100 pieces,I have tested it and determined that it is a problem with the carrier board
Almost 100 pieces,I have tested it and determined that it is a problem with the carrier board

#5
Posted 08/30/2017 06:40 AM   
Since you make sure it is carrier board issue, you can detect which is the failure point by isolating components on CARRIER_PWR_ON net, and so confirm which component puts it to ground.
Since you make sure it is carrier board issue, you can detect which is the failure point by isolating components on CARRIER_PWR_ON net, and so confirm which component puts it to ground.

#6
Posted 08/30/2017 06:50 AM   
I have removed the components on CARRIER_PWR_ON net, but still not, I think the other signal so that TX1 Moudle can not produce the correct CARRIER_PWR_ON, but I can not find out which signal
I have removed the components on CARRIER_PWR_ON net, but still not, I think the other signal so that TX1 Moudle can not produce the correct CARRIER_PWR_ON, but I can not find out which signal

#7
Posted 08/30/2017 07:17 AM   
That's why I previously suggested you test power on sequence to make sure all related signals timing are correct, especial for the VIN_PWR_BAD# and POWER_BTN#.
That's why I previously suggested you test power on sequence to make sure all related signals timing are correct, especial for the VIN_PWR_BAD# and POWER_BTN#.

#8
Posted 08/30/2017 07:23 AM   
VIN_PWR_BAD is correct, but the POWER_BTN signal I can not test, did not use it, so did not lead to
VIN_PWR_BAD is correct, but the POWER_BTN signal I can not test, did not use it, so did not lead to

#9
Posted 08/30/2017 07:28 AM   
So you used auto power on design for it since POWER_BTN is not used? Did you follow the auto-power-on chapter of OEM DG? You can see in the figure 4 of DG, there are only VIN_PWR_BAD#, POWER_BTN and power rails of carrier board before CARRIER_PWR_ON, if all them are correct, it is weird that CARRIER_PWR_ON is held low.
Answer Accepted by Forum Admin
So you used auto power on design for it since POWER_BTN is not used? Did you follow the auto-power-on chapter of OEM DG? You can see in the figure 4 of DG, there are only VIN_PWR_BAD#, POWER_BTN and power rails of carrier board before CARRIER_PWR_ON, if all them are correct, it is weird that CARRIER_PWR_ON is held low.

#10
Posted 08/31/2017 02:56 AM   
Hi ??, Have you clarified the cause on Carrier Board? Any further suggestion required? Thanks
Hi ??,

Have you clarified the cause on Carrier Board?
Any further suggestion required?

Thanks

#11
Posted 09/07/2017 05:27 AM   
Hi there, We figured it out that 1.8V needs to be low until carrier power good is sent. This resolved the temperature issue. Thanks for your help.
Hi there,

We figured it out that 1.8V needs to be low until carrier power good is sent. This resolved the temperature issue. Thanks for your help.

#12
Posted 02/13/2018 06:24 PM   
Scroll To Top

Add Reply