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Pci devices, Table, Aaaaaa – Motorola ATCA-717 User Manual

Page 136: Pci device interrupts, Figure, Pci structure

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Maps and Registers

PCI Devices

136

PENT/ATCA−717

PCI Devices

The following figure shows the on−board PCI device structure.

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PMC#1

PMC#2

PMC#3

PMC#4

ETH#2

ETH#0/1

PCI I/O Bridge

South Bridge

PCI

PCI

PCI

PCI

PCI

PCI

PCI

PCI

Bus #5

Bus #4

Dev. No. = 3

Dev. No. = 1

Dev. No. = 2

Dev. No. = 4

Dev. No. = 4

Dev. No. = 4

Bus #2

Bus #1

Dev. No. = 31

Dev. No. = 29

Dev. No. = 30

Dev. No. = 28

Host Bridge

PCI

PCI

Bus #3

Bus #0

Dev. No. = 2

ETH#0/1

Intel

82540EM

Intel

82546EB/GB

Figure 41:

PCI Structure

The following table lists the PCI devices interrupt signals which are routed to the South
Bridge. BIOS allows to map these signals to standard ISA interrupts.

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Table 17:

PCI Device Interrupts

PCI Device

PCI IRQ

Device
No.

IDSEL

PCI Bus

PMC 1

PIRQA_N|PIRQB_N|PIRQC_N|PIRQD_N

3

19

5

PMC 2

PIRQA_N|PIRQB_N|PIRQC_N|PIRQD_N

1

17

5

PMC 3

PIRQA_N|PIRQB_N|PIRQC_N|PIRQD_N

2

18

4

PMC 4

PIRQA_N|PIRQB_N|PIRQC_N|PIRQD_N

4

20

4

ETH 2

PIRQC_N

4

20

2

ETH 0|1

PIRQA_N|PIRQB_N

4

20

1