ACOK Circuit in detail

[sevm89]

Dear Nvidia Team

We are trying to understand the ACOK circuit on the P3737-A04. As we are not able to find a datasheet of the GS7155NVTD-R, maybe you can help us:

• Do we assume correctly that the POK signal (PS_AQR_PG) is an open-drain output and can only pull to GND?
• With the Jumper of the ACOK_CON in place, this signal gets pulled-up to 3V3_AO? Or what is exactly the signal CCG4_LED (I2C_INT_AR of the USB PD Controller)?
• If we would not need WOL, could we just use a pullup on P0.6 of the Button MCU or do we still need the whole ACOK_CON_RISING Circuit?

Thank you for your help.
Best regards

[Trumany]

1. PS_AQR_PG is pulled up to 3V3_AO as input of WOL ACOK to MCU and input of GS7155NVTD-R. It can only be high or low (GND).
2. ACOK_CON will be pulled to high 3V3_PD by PD controller with jumper.
3. Yes, it can be removed. You can refer to that of Xavier carrier P2822 schematic in DLC.