I2C Device Addresses; User Configuration Eeprom; Table 4-4 I2C Bus Device Addressing - SMART Embedded Computing MVME4100 Programmer's Reference Manual

Programming Details
2
4.5 I C Device Addresses
A two-wire serial interface is provided by an I
the MPC8548E. The MPC8548E I
contents of the various I
2
the I C devices used for the MVME4100 and their assigned device addresses.
Table 4-4
I2C Bus
Address
$98
$A0
$A4
$A6
$A8
$AA
$AC
$AE
$D0
NOTES:
1. Each SPD defines the physical attributes of each bank or group of banks.
2. This is a dual address serial EEPROM.
3. The device address is user selectable using switches on the RTM. The recommended
address setting for the MVME4100 is $AA.
4.6

User Configuration EEPROM

The board provides two 64 KB dual address serial EEPROMs for a total of 128 KB user
configuration storage. These EEPROMs are hardwired to have device IDs as shown in
Table 4-4 on page
the EEPROM Data Sheet listed in
details.
56
2
C devices located on the MVME4100. The following table contains
I2C Bus Device Addressing
Device
Address
Size (bytes) Device Function
A2 A1 A0
(binary)
N/A N/A
000 256 x 8
010 65,536 x 8
011 65,536 x 8
100 8192 x 8
101 8192 x 8
110 8192 x 8
111 -
N/A N/A
56, and each device ID will not be used for any other function. Refer to
MVME4100 Single Board Computer Programmer's Reference (6806800H19D)
2
C compatible serial controller integrated into
2
C controller is used by the system software to read the
MAX6649 temperature sensor
SO-CDIMM SPD
User configuration
User configuration
VPD (on-board system configuration)
RTM VPD (off-board configuration)
XMCSpan VPD
Reserved
DS1375 real-time clock
Appendix B, Related
Programming Details
Documentation, for additional
Notes
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1
2
2
2
2, 3
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