Chapter 2 Programming Details
MVME3100 Programmer’s Guide (V3100A/PG1)
31
RTM VPD EEPROM
The MVME3100 board provides an 8KB dual address serial EEPROM containing VPD configuration
information specific to the MVME3100 RTM. Typical information that may be present in the EEPROM
may include: manufacturer, board revision, build version, date of assembly, options present, etc. The
RTM VPD EEPROM device ID is user selectable with the recommended value for MVME3100 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.
Ethernet PHY Address
The assigned Ethernet PHY addresses on the MPC8540 MII management (MIIM) bus is shown in the
following table.
Flash Memory
The MVME3100 is designed to provide one or two physical banks of soldered-on Flash memory. Each
bank may be populated with two AMD Spansion MirrorBit 3.0V devices configured to operate in 16-bit
mode to form a 32-bit Flash bank. The Flash bank connected to LBC Chip Select 0 is the boot bank and
is always populated. The second Flash bank connected to LBC Chip Select 1 may or may not be
populated depending on Flash size requirements and available Flash devices. The VPD Flash packet(s)
will determine which banks are populated and the size of the devices. Software must program one or
two LBC chip selects based on the VPD Flash packet information. The following table defines the
supported Flash density options for each bank. The factory configuration for the MVME3100-1152 is
one bank of 64MB; for the MVME3100-1263, it is one bank of 128MB.
Table 2-5. PHY Types and MII Management Bus Addresses
MPC8540
Ethernet
Port
Function/Location
PHY Types
PHY MIIM Address
[4:0]
TSEC1
Gigabit Ethernet port routed to front
panel
BCM5461S
01
TSEC2
Gigabit Ethernet port routed to P2
BCM5461S
02
Fast
Ethernet
Controller
10/100 Ethernet port routed to P2
BCM5221
03
Table 2-6. Flash Options
Flash Bank Size
Spansion Part Number
Device Size
32MB
S29GL128N
128 Mbit
64MB
S29GL256N
256 Mbit
128MB
S29GL512N
512 Mbit