Smbus Interface; Voltage Regulators; Cpld Interface - Nvidia ConnectX-6 Dx MCX623432AE-ADAB User Manual

LED and State
4Hz blinking Yellow
LED0 -
Link Speed
LED1 -
Activity
FRU EEPROM
FRU EEPROM allows the baseboard to identify different types of Mezzanine cards. FRU EEPROM is
accessible through SMCLK and SMDATA. FRU EEPROM address is defined according to SLOT_ID0 and
SLOT_ID1, and its capacity is 4Kb.

SMBus Interface

ConnectX®-6 Dx technology maintains support for manageability through a BMC. ConnectX®-6 Dx
OCP 3.0 adapter can be connected to a BMC using MCTP over SMBus or MCTP over PCIe protocols as
if it is a standard NVIDIA OCP 3.0 adapter. For configuring the adapter for the server's specific
manageability solution, please contact NVIDIA Support.

Voltage Regulators

The voltage regulator power is derived from the OCP 3.0 edge connector 12V and 3.3V supply pins.
These voltage supply pins feed onboard regulators that provide the necessary power to the various
components on the card.
CPLD Interface
The adapter card incorporates a CPLD device that controls the networking port LEDs and the scan
chain. It draws its power supply from 3.3V_EDGE.
Indicates an error with the link. The error can be one of the
following:
Error Type Description
2
I C access to the
2
networking ports fails
I C
Over-current condition
of the networking
Over-current
ports
• A constant Green indicates a link
networking speed.
• A constant Yellow indicates a link
maximum networking speed.
• If LED0 is off, then the link has not been established.
• A blinking Green indicates a valid link with data
transfer.
• If LED1 is off, then there is no activity
Description
LED Behavior
Blinks until the error
is fixed
Blinks until the error
is fixed
with the maximum
with less than the
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