Intel IXP42X User Manual

Intel

®

 IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor

DM

September 2006

258

Order Number: 252480-006US

These registers are accessible from the AHB and are memory mapped in the AHB 

address space. 

 shows the address map for the Control and Status Register. 

The PCI offset is relative to the base address in PCI_BAR4 for accesses from the PCI 

bus.

0 x C0000000

0x00

PCI_NP_AD

PCI non-pre-fetch address register

0 x C0000004

0x04

PCI_NP_CBE

PCI non-pre-fetch command/byte enables 

register

0 x C0000008

0x08

PCI_NP_WDATA

PCI non-pre-fetch write data register

0 x C000000C

0x0C

PCI_NP_RDATA

PCI non-pre-fetch read data register

0 x C0000010

0x10

PCI_CRP_AD_CBE

PCI configuration port address/cmd/byte 

enables register

0 x C0000014

0x14

PCI_CRP_WDATA

PCI configuration port write data register

0 x C0000018

0x18

PCI_CRP_RDATA

PCI configuration port read data register

0 x C000001C

0x1C

PCI_CSR

PCI Controller Control and Status register

0 x C0000020

0x20

PCI_ISR

PCI Controller Interrupt Status register

0 x C0000024

0x24

PCI_INTEN

PCI Controller Interrupt Enable register

0 x C0000028

0x28

PCI_DMACTRL

DMA control register

0 x C000002C

0x2C

PCI_AHBMEMBASE

AHB Memory Base Address Register

0 x C0000030

0x30

PCI_AHBIOBASE

AHB I/O Base Address Register

0 x C0000034

0x34

PCI_MEMBASE

PCI Memory Base Address Register

0 x C0000038

0x38

PCI_AHBDOORBELL

AHB Doorbell Register

0 x C000003C

0x3C

PCI_PCIDOORBELL

PCI Doorbell Register

0 x C0000040

0x40

PCI_ATPDMA0_AHBADDR

AHB to PCI DMA AHB Address Register 0

0 x C0000044

0x44

PCI_ATPDMA0_PCIADDR

AHB to PCI DMA PCI Address Register 0

0 x C0000048

0x48

PCI_ATPDMA0_LENGTH

AHB to PCI DMA Length Register 0

0 x C000004C

0x4C

PCI_ATPDMA1_AHBADDR

AHB to PCI DMA AHB Address Register 1

0 x C0000050

0x50

PCI_ATPDMA1_PCIADDR

AHB to PCI DMA PCI Address Register 1

0 x C0000054

0x54

PCI_ATPDMA1_LENGTH

AHB to PCI DMA Length Register 1

0 x C0000058

0x58

PCI_PTADMA0_AHBADDR

PCI to AHB DMA AHB Address Register 0

0 x C000005C

0x5C

PCI_PTADM0_PCIADDR

PCI to AHB DMA PCI Address Register 0

0 x C0000060

0x60

PCI_PTADM0_LENGTH

PCI to AHB DMA Length Register 0

0 x C0000064

0x64

PCI_PTADM1_AHBADDR

PCI to AHB DMA AHB Address Register 1

0 x C0000068

0x68

PCI_PTADM1_PCIADDR

PCI to AHB DMA PCI Address Register 1

0 x C000006C

0x6C

PCI_PTADM1_LENGTH

PCI to AHB DMA Length Register 1