Flash Memory; Pci/Pci-X Configuration - SMART Embedded Computing MVME4100 Programmer's Reference Manual

Programming Details
4.10

Flash Memory

The MVME4100 is designed to provide 128 MB of soldered-on NOR flash memory. Two
+3.0 V devices are configured to operate in 16-bit mode to form a 32-bit flash bank. This
flash bank is also the boot bank and is connected to LBC Chip Select 0 and 1. The NOR
flash is accessed via the MPC8548E local bus. The next table shows memory size and
device IDs.
Table 4-6
Device Part
Number
S29GL512P10
A hardware Flash Bank write-protect switch is provided on the MVME4100 to enable write
protection of the NOR flash. Regardless of the state of the software flash write-protect bit
in the NOR Flash Control/Status register, write protection is enabled when this switch is
ON. When the switch is OFF, write protection is controlled by the state of the software flash
write-protect bits. It is only disabled by clearing this bit in the NOR Flash Control/Status
register (refer to section
F_WP_HW bit reflects the state of the switch and is only software readable whereas the
F_WP_SW bit supports both read and write operations.
Also included is one bank of NAND flash which is accessed via the MPC8548E local bus.
The next table shows the emory sizes and device IDs.
Table 4-7
Device Part
Number
K9WBG08U1M
4.11

PCI/PCI-X Configuration

The next sections provide information that details the PCI/PCI-X configuration of the
various on-board PCI devices.
58
NOR Flash Memory Configurations
Data Bus
Width
32 bits
NOR Flash Control/Status Register on page
NAND Flash Memory Configurations
Data Bus
Width
8 bits
MVME4100 Single Board Computer Programmer's Reference (6806800H19D)
Bank Size Device Size Vendor ID
128 MB 512 megabit
Bank Device
Size Size
4 GB 4 GB
Programming Details
Device ID
AMD-0001h 7E23h
29). Note that the
Vendor ID Device ID
Samsung = ECh D7h