FRU Common Header
-----------------

The common header section is mandatory for all Alveo™ Products. This section holds version information for the overall format specification, including offsets to the other area, as shown in the following table. The other areas can be present based on the application of the device. An area is inferred as *null* or *not present* when the common header has a value of 00h for the starting offset of that area.

*Table :* **Common Header**

+---------------+--------------------------+---------------+---------------+--------------------------------+
| **Byte**      | **Field Description**    | **Size**      | **Byte**      |     **Notes**                  |
| **Address**   |                          | **(bytes)**   | **Address**   |                                |
+===============+==========================+===============+===============+================================+
| 0             | Common Header            | 1             | 0x01          | Version number =0x01           |
|               | Format version           |               |               |                                |
+---------------+--------------------------+---------------+---------------+--------------------------------+
| 1             | Internal user area       | 1             | 0x00          | Not present                    |
+---------------+--------------------------+---------------+---------------+--------------------------------+
| 2             | Chassis information area | 1             | 0x00          | Not present                    |
+---------------+--------------------------+---------------+---------------+--------------------------------+
| 3             | Board information area   | 1             | 0x01          | Starting offset: 8;            |
|               |                          |               |               |                                |
|               |                          |               |               | offset in multiples of 8 bytes |
+---------------+--------------------------+---------------+---------------+--------------------------------+
| 4             | Product information area | 1             | 0x09          | Starting offset: 72;           |
|               |                          |               |               |                                |
|               |                          |               |               | offset in multiples of 8 bytes |
+---------------+--------------------------+---------------+---------------+--------------------------------+
| 5             | Multi-record area        | 1             | 0x12          | Starting offset: 144;          |
|               |                          |               |               |                                |
|               |                          |               |               | offset in multiples of 8 bytes |
+---------------+--------------------------+---------------+---------------+--------------------------------+
| 6             | Reserved                 | 1             | 0x00          |                                |
+---------------+--------------------------+---------------+---------------+--------------------------------+
| 7             | Common header checksum   | 1             | 0xE3          |                                |
+---------------+--------------------------+---------------+---------------+--------------------------------+


**Xilinx Support**

For support resources such as answers, documentation, downloads, and forums, see the `Alveo Accelerator Cards Xilinx Community Forum <https://forums.xilinx.com/t5/Alveo-Accelerator-Cards/bd-p/alveo>`_.

**License**

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You may obtain a copy of the License at
`http://www.apache.org/licenses/LICENSE-2.0 <http://www.apache.org/licenses/LICENSE-2.0>`_

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