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Intel
®
IXP42X product line and IXC1100 control plane processors—PCI Controller
Intel
®
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
DM September 2006
270 Order Number: 252480-006US
6.14.2.20 AHB to PCI DMA AHB Address Register 1
(PCI_ATPDMA1_AHBADDR)
6.14.2.21 AHB to PCI DMA PCI Address Register 1
(PCI_ATPDMA1_PCIADDR)
6.14.2.22 AHB to PCI DMA Length Register 1
(PCI_ATPDMA1_LENGTH)
Register Name: PCI_ATPDMA1_AHBADDR
Hex Offset Address: 0xC000004C Reset Hex Value: 0x00000000
Register
Description:
Source address on the AHB bus for AHB to PCI DMA transfers. Paired with pci_atpdma0_ahbaddr to allow
buffering of DMA transfer requests.
Access: See below.
31 210
address 0 0
Register
PCI_ATPDMA1_AHBADDR
Bits Name Description
Reset
Value
PCI Access AHB Access
31:2 address AHB word address 0x00000000 RO RW
1:0 Lower AHB address bits hard-wired to zero. 00 RO RO
Register Name: PCI_ATPDMA1_PCIADDR
Hex Offset Address: 0xC0000050 Reset Hex Value: 0x00000000
Register
Description:
Destination address on the PCI bus for AHB to PCI DMA transfers. Paired with pci_atpdma0_pciaddr to
allow buffering of DMA transfer requests.
Access: See below.
31 210
address 0 0
Register
PCI_ATPDMA1_PCIADDR
Bits Name Description
Reset
Value
PCI Access AHB Access
31:2 address PCI word address 0x00000000 RO RW
1:0 Lower PCI address bits hard-wired to zero. 00 RO RO
Register Name: PCI_ATPDMA1_LENGTH
Hex Offset Address: 0xC0000054 Reset Hex Value: 0x00000000
Register
Description:
Provides word count and control for AHB to PCI DMA transfers. Paired with pci_atpdma0_length to allow
buffering of DMA transfer requests.
Access: See below.
31 30 29 28 27 16 15 0
EN
(Rsvd)
BE
(Reserved) wordcount