Pci/Pci-X Configuration; Pci Idsel And Interrupt Definition - SMART Embedded Computing MVME7100 Programmer's Reference Manual

Programming Details
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.
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 data sheet 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)
PCI1
(PEX8114)
PCI2
(PEX8114)
PCI3
(PEX8114)
PCI4
(PEX8112)
Refer to the MC864xD reference manual for additional details about the MC864xD PIC
operation.
54
IDSEL and Interrupt Mapping for PCI Devices
AD Line
PCI Bus for
IDSEL
0b0_0000 internal
0b0_0100 20
0b0_0101 21
0b0_0100 20
0b0_0101 21
0b0_0010 18
0b0_0010 18
MVME7100 Single Board Computer Programmer's Reference (6806800E82C)
PCI
Device or Device/Slot INT to MC864xD IRQ
Slot
INTA#
MC864xD
INTA
PMC1
Primary
IRQ1
INTB
PMC1
Secondary
IRQ2
INTA
PMC2
Primary
IRQ2
INTB
PMC2
Secondary
IRQ3
INTC
Tsi148 VME
IRQ3
INTC
uPD720101
USB
IRQ3
Programming Details
INTB# INTC# INTD#
INTB INTC INTD
IRQ2 IRQ3 IRQ0
INTC INTD INTA
IRQ3 IRQ0 IRQ1
INTB INTC INTD
IRQ3 IRQ0 IRQ1
INTC INTD INTA
IRQ0 IRQ1 IRQ2
INTD INTA INTB
IRQ0 IRQ1 IRQ2
NC INTA INTB
IRQ0 IRQ1 IRQ2