Pci/Pci-X Configuration; Pci Idsel And Interrupt Definition - SMART Embedded Computing MVME7100ET Programmer's Reference Manual

Programming Details
A hardware Flash Bank write-protect switch is provided on the MVME7100ET 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 4.1.6.4). Note that the F_WE_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 MC864xD local bus.
The table below shows the memory sizes and device IDs.
Table 4-7
Device Part
Number
K9LBG08U0M
K9HCG08U1M
4.11

PCI/PCI-X Configuration

The sections below provide information that details the PCI/PCI-X configuration of the
various on-board PCI devices.
4.11.1

PCI IDSEL and Interrupt Definition

Each PCI device has an associated address line connected via a resistor to its IDSEL pin
for Configuration Space accesses. The following table shows the IDSEL assignments for
the PCI devices and slots on each of the PCI busses on the board along with the
corresponding interrupt assignment to the PIC external interrupt pins. Refer to the
MC864xD datasheet and the PEX8114, PEX8112 and PEX8525 data sheets for details on
generating configuration cycles on each of the PCI busses.
Table 4-8
Device
Number Field
A
(8641D)
58
NAND Flash Memory Configurations
Data Bus Bank
Width Size
8 bits 4 GB
8 bits 4 GB
IDSEL and Interrupt Mapping for PCI Devices
AD Line
PCI Bus for
IDSEL
0b0_0000 internal
MVME7100ET Single Board Computer Programmer's Reference (6806800K88C)
Device
Vendor ID
Size
4 GB Samsung = ECh
8 GB Samsung = ECh
PCI Device
Device/Slot INT to MC864xD IRQ
or Slot
INTA#
MC864xD
Programming Details
Device ID
D7h
D7h
INTB# INTC# INTD#