Eeprom; Flash; Eeprom Vpd; Figure 4: Flash Jumper - Dell ConnectX MCQH29-XDR User Manual

Rev 1.0

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.
Table 6 - Jumper Configuration
Description
Flash present/
not present
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 7 - MCQH29-XDR VPD
Offset (Decimal)
0 Large Resource Type ID String Tag (0x02)
1
3
21 Large Resource Type VPD-R Tag (0x10)
22
24
26
27
33
35
12 Mellanox Technologies
Option
connection open – Flash present
connection shorted – Flash not present

Figure 4: Flash Jumper

Item
Length
Data
Length
VPD Keyword
Length
Data
VPD Keyword
Length
connection open –
Value Format
0x82
0x12
"DELL PE C6100 Alphanumeric
MEZZ IB QDR"
0x90
0x43
"PN" Numbers
0x6
"059MP7"
"EC" Alphanumeric
0x3
I/O Card Interfaces
Card Default
Comments
Configuration
Header 1x2
Flash present
Description
Short description / ID
Read Only Area
Add in Card Part Number
Engineering Change Level of the
card (rev)