Adapter Card Interfaces
14
Rev 1.2
Mellanox Technologies
4Adapter Card Interfaces
4.1 I/O Interfaces
Each HCA card includes the following interfaces:
•
Two 4X InfiniBand Copper Connectors
•
PCI Express x8 edge connector
•
I/O panel LEDs
•
I
2
C compatible connector (for debug)
4.1.1 InfiniBand Interface
The ConnectX
®
IB (MT25408)device is compliant with the
InfiniBand Architecture Specification, Release 1.2.
It has
two compliant 4X InfiniBand ports, 1 and 2, each having four Tx/Rx pairs of SerDes. Each of the HCA cards (listed
in Table 3 on page 8) based on this device provides access to these ports by means of two InfiniBand connectors.
These cards are also compliant with the IBTA specification 1.2. Connector 1 connects to port 1 of the device, while
connector 2 connects to port 2.
Figure 2: Port Numbering
Each of the HCA cards is embedded with a ‘media detect circuit’ that supports active cables and external InfiniBand
fiber solutions to be connected to the InfiniBand port connectors. Fiber Solutions require the use of active media con-
verters.
Port 1
Port 2
