Hardware manual

3 Programmers Reference EUROCOM-17-5xx
90 Hardware Manual
Because the FRAM can only be handled via an I
2
C bus protocol, data
should only be modified using the implemented RMon utilities. Therefore,
see RMon Documentation.
The FRAM is controlled in detail by the signals SDIO and SCLK. These
signals can be set via a register at address $FEC5.4000.
Table55: I
2
C Control Register Layout
Table56: Address Map of the Serial EEPROM
The user data can be stored at address offset $100 - $1FF. To store the
user data, see RMon documentation for more information.
Via J1702 the user data can be write protected.
Register Address 7 - 2 1 0
I
2
C Control $FEC5.4000 unused SCLK SDIO
Offset
Address
Size
(Byte)
Usage
$000 8 Initialization
$008 2 Revision code of structure
$00A 2 Size of CRC calculation
$00C 4 CRC
$010 16 Board revision information
$020 16 Option revision information
$030 16 Option revision information
$040 16 Option revision information
$050 16 Option revision information
$060 8 Serial number
$068 8 Reserved
$070 14 Revision codes
$07E 2 Category codes
$080 64 Text
$0C0 64 Reserved
$100 256 User data