MVME3100 Programmer’s Guide (V3100A/PG1)
Chapter 2 Programming Details
30
Notes
1.
Each SPD defines the physical attributes of each bank or group of banks. If both banks of a
SODIMM are populated, they are the same speed and memory size.
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 MVME3100 is $AA.
User Configuration EEPROM
The MVME3100 board provides two 64KB dual address serial EEPROMs for a total of 128KB user
configuration storage. These EEPROMs are hardwired to have device IDs as shown in
Table 2-4 on
page 29
, and each device ID will not be used for any other function. Refer to the
2-Wire Serial EEPROM
Datasheet
listed in
Appendix A,
Related Documentation
, for additional details.
VPD EEPROM
The MVME3100 board provides an 8KB dual address serial EEPROM containing vital product data
(VPD) configuration information specific to the MVME3100. Typical information that may be present in
the EEPROM may include: manufacturer, board revision, build version, date of assembly, memory
present, options present, L2 cache information, etc. The VPD EEPROM is hardwired to have a device
ID as shown in
Table 2-4 on page 29
. Refer to the
2-Wire Serial EEPROM Datasheet
listed in
Appendix
A,
Related Documentation
, for additional details.
$A8
100
8192 x 8
VPD (on-board system
configuration)
2
$AA
101
8192 x 8
RTM VPD (off-board configuration)
2, 3
$AC
110
Reserved
$AE
111
Reserved
$D0
N/A
N/A
DS1375 real-time clock
Table 2-4. I2C Bus Device Addressing (continued)
I2C Bus
Address
Device Address
A2 A1 A0
(binary)
Size (bytes)
Device Function
Notes