Rev 1.0

I/O Card Interfaces

2.4.2EEPROM

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.

2.4.3Flash

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

Option

Card Default

Comments

Configuration

 

 

 

 

 

 

 

Flash present/

connection open – Flash present

connection open –

Header 1x2

not present

connection shorted – Flash not present

Flash present

 

 

Figure 4: Flash Jumper

 

 

 

 

 

 

2.5EEPROM 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)

Item

Value

Format

Description

 

 

 

 

 

0

Large Resource Type ID String Tag (0x02)

0x82

 

 

 

 

 

 

 

1

Length

0x12

 

 

 

 

 

 

 

3

Data

"DELL PE C6100

Alphanumeric

Short description / ID

 

 

MEZZ IB QDR"

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

12

Mellanox Technologies

Page 12
Image 12
Dell user manual Eeprom, Flash, Jumper Configuration, MCQH29-XDR VPD