Built-in shutdown logic protects the card from damage by removing power to the FPGA when either electrical or thermal limits (given in the following table) reach or exceed their respective card shutdown thresholds. VCCINT current and temperature are monitored by the card regulator while FPGA temperature is monitored by the satellite controller (SC). Power to the card SC remains on during card shutdown. Card shutdown protection logic is always enabled and cannot be disabled.
Note: When card shutdown occurs, the card is pulled off the
PCIe bus and consequently is not seen by the host. No AXI
firewall trip is issued. A cold reboot of the server is required to recover.
The following table lists the card shutdown power and thermal thresholds.
| Sensor Description | Card Shutdown Threshold |
|---|---|
| VCCINT Current | 60A |
| VCCINT Temperature | 125°C |
| FPGA Temperature | 107°C |