Interfaces; Ethernet Sfp28 And Qsfp28 Interfaces; Pci Express Interface; Fru Eeprom - Nvidia ConnectX-4 Lx User Manual

Interfaces

Ethernet SFP28 and QSFP28 Interfaces

The network ports of the ConnectX®-4 Lx adapter card for OCP Spec 2.0 are compliant with the IEEE
802.3 Ethernet standards listed in
SFP28/QSFP28 connectors on the adapter card.

The adapter card includes special circuits to protect from ESD shocks to the card/server
when plugging copper cables.

PCI Express Interface

The ConnectX®-4 adapter card supports PCI Express Gen 3.0 (1.1 and 2.0 compatible) through an x8
or x16 edge connector. The device can be either a master initiating the PCI Express bus operations,
or a subordinate responding to PCI bus operations. The following lists PCIe interface features:
Supported PCIe Interface
PCIe Gen 3.0 (1.1 and 2.0 compatible) through x8/x16
edge connectors

FRU EEPROM


Applies to MCX4431M-GCAN
FRU EEPROM allows the baseboard to identify different types of Mezzanine cards. MEZZ FRU EEPROM
is accessible through MEZZ_SMCLK and MEZZ_SMDATA (Connector A18 and A19). MEZZ FRU EEPROM
address is 0xA2 and its capacity is 128Kb.

LED Interface

There are two, LED0 and LED1, and speed. LED0 is bi-color (yellow and green) LED and LED1 is a
single color (green) LED. I/O LEDs per port to indicate link status.
Link Indications
LED and State
1Hz blinking Yellow
Features and Benefits. Ethernet traffic is transmitted through the
Link Rates: 2.5. 5.0 or 8.0GT/s.
Auto Negotiation to: x16, x8, x4, x2 or x1.
Support for MSI/MSI-X mechanisms.
Beacon command for locating the adapter card
Features
Description
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