DB EEPROM location 0x20

The card I’m looking at (an LFRX variant) has the proper checksum in
0x1F (0x17), but then byte 0x20 has 0x04 with the remaining data 0xFF

I previously thought I understood 0x20 began the region where we could
do what we wanted, but I’m now not so sure. If I was going to store some
custom data, where does that region begin and what is the significance
of the 0x04 in 0x20?

On 02/20/2011 11:29 PM, Brett L. Trotter wrote:

The card I’m looking at (an LFRX variant) has the proper checksum in
0x1F (0x17), but then byte 0x20 has 0x04 with the remaining data 0xFF

I previously thought I understood 0x20 began the region where we could
do what we wanted, but I’m now not so sure. If I was going to store some
custom data, where does that region begin and what is the significance
of the 0x04 in 0x20?

This may be helpful
http://code.ettus.com/redmine/ettus/projects/uhd/repository/revisions/master/entry/host/lib/usrp/dboard_eeprom.cpp

The only thing thats actually used is the checksum, and IDs. And the
rest is free to use.

-josh

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