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MVME3100 Single Board Computer Installation and Use (6806800M28C)
131
7.6 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 7-4
on page 130, and each device ID will not be used for any other function. Refer to the 2-Wire
Serial EEPROM Datasheet listed in Appendix B, Related Documentation, for additional details.
$A0 000 256 x 8 DDR memory SPD (SODIMM module
banks 1 and 2 corresponding to
MPC8540 memory controller chip
selects 0 and 1)
1
$A2 001 Reserved
$A4 010 65,536 x 8 User configuration
2
$A6 011 65,536 x 8 User configuration
2
$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
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.
Table 7-4 I2C Bus Device Addressing (continued)
I2C Bus
Address
Device Address
A2 A1 A0
(binary) Size (bytes) Device Function Notes