Embedian, Inc.
63
SBC-SMART-MEN User’s Manual Document Revision v.1.0
4.2 Module EEPROM Format
The SMARC module on
SBC-SMART-MEN
includes an I2C serial EEPROM
available on the I2C_PM bus. An On Semiconductor 24C32 or equivalent
EEPROM is used in the module. The device operates at 1.8V. The Module
serial EEPROM is placed at I2C slave addresses A2 A1 A0 set to 0 (I2C
slave address 50 hex, 7 bit address format or A0 / A1 hex, 8 bit format) (for
I2C EEPROMs, address bits A6 A5 A4 A3 are set to binary 0101
convention).
The module serial EEPROM is intended to retain module parameter
information, including serial number. The module serial EEPROM data
structure conforms to the PICMG® EEEP Embedded EEPROM
Specification.
The EEPROM ID memory layout is now follow the mainline and as follows.
Name
Size (Bytes)
Contents
Header
4
MSB 0xEE3355AA LSB
Board
Name
8
Name for Board in ASCII “SMARCT33” = Embedian
SMARC T335X Computer on Module
Version
4
Hardware version code for version in ASCII “00A0” = rev.
A0
Serial
Number
12
Serial number of the board. This is a 12 character string
which is: WWYYMS60nnnn
Where: WW = 2 digit week of the year of production
YY = 2 digit year of production
60 = 600Mhz
nnnn = incrementing board number
Configuration
Option
32
Codes to show the configuration setup on this board. For
the available T335X supported, the following codes are
used:
ASCII = “SMARCT33” = default configuration
Remaining 24 bytes are reserved
Available
32720
Available space for other non-volatile codes/data
