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I/O Card InterfacesRev 1.0
Mellanox Technologies
12
2.4.2 EEPROM
The I/O card incorporates an EEPROM that is accessible through the I2C-compatible interface.
The EEPROM is used for storing the Vital Product Data (VPD). The VPD format adheres to the
PCI Local Bus Specification Rev 2.3 VPD definition. The EEPROM capacity is 4Kb.
2.4.3 Flash
The I/O card includes one SPI Flash device accessible via the Flash interface of the MT25408B0
ConnectX-2 device.
There is a jumper on the card that indicates to the device whether an on-board Flash device is to be
used. Table 6 provides information on this jumper. See the schematic in Figure 14 on page 23 for
the jumper location.
2.5 EEPROM VPD
The I/O card incorporates an EEPROM that is accessible through the I2C-compatible interface.
The EEPROM is used for storing the Vital Product Data (VPD) and FRU. The VPD format
adheres to the PCI Local Bus specification rev 2.3 VPD definition. The EEPROM capacity is 4Kb.
Table 6 - Jumper Configuration
Description Option
Card Default
Configuration
Comments
Flash present/
not present
connection open – Flash present
connection shorted – Flash not present
Figure 4: Flash Jumper
connection open –
Flash present
Header 1x2
Table 7 - MCQH29-XDR VPD
Offset (Decimal) Item Value Format Description
0 Large Resource Type ID String Tag (0x02) 0x82
1Length0x12
3 Data "DELL PE C6100
MEZZ IB QDR"
Alphanumeric Short description / ID
21 Large Resource Type VPD-R Tag (0x10) 0x90 Read Only Area
22 Length 0x43
24 VPD Keyword “PN” Numbers Add in Card Part Number
26 Length 0x6
27 Data “059MP7”
33 VPD Keyword “EC” Alphanumeric Engineering Change Level of the
card (rev)
35 Length 0x3