Status LEDs - Status LEDs - UG1469

Alveo U55C Data Center Accelerator Card User Guide (UG1469)
Document ID
UG1469
Release Date
2023-05-05
Revision
1.0 English

The Alveo U55C has two sets of LEDs:

  1. Card status
  2. Ethernet status

Card status LED is visible through a cutout in the PCIe end bracket and defined in the following table.

Table 1. Card Status LEDs
Reference Designator Description
DS1 When FPGA is configured, LED is illuminated blue, otherwise it remains Off

There are two Ethernet status LEDs; one for link and the other for activity. The LED definitions for both the 100G and 4x25G configurations are given below.

100G QSFP LED Definition
  • The Link LED is green when a physical link is present and operating at the highest supported link rate, yellow when operating at lower rates, and OFF in the absence of physical link.
  • The Activity LED is ON or blinking to show link activity and OFF when there is no activity.
Multiple 4x25G QSFP LED Definition
  • The Link LED is green when all physical links are present and operating at the highest supported link rate, yellow when any link is operating at a lower rate or is not linked, and OFF in the absence of physical link on all links.
  • The Activity LED is ON or blinking to show activity link on any port and OFF when there is no activity on any port.