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Intel
®
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
September 2006 DM
Order Number: 252480-006US 253
PCI Controller—Intel
®
IXP42X product line and IXC1100 control plane processors
6.14.1.5 Base Address 0 Register
(PCI_BAR0)
Register PCI_BHLC
Bits Name Description
Reset
Value
PCI Access AHB Access
31:2
4
BIST BIST control register, not supported 0x00 RO RO
23
Header
Type[7]
Single Function/Multi-Function Device. Set to 0 to
identify this device as a single-function PCI device.
0RORO
22:1
6
Header
Type[6:0]
Configuration Header Type for this device. Set to 00 0x00 RO RO
15:1
0
Latency
Timer[7:2]
Latency Timer value in units of four PCI bus clocks. 0x00 RW RW
9:8
Latency 1
Timer[1:0]
Hard-wired low order Latency Timer bits 0x0 RO RO
7:0 Cache Line Cache Line Size in units of 32-bit words. 0x00 RW RW
Register Name: PCI_BAR0
Hex Offset Address: 0x10 Reset Hex Value: 0x00000008
Register
Description:
PCI Base Address register for AHB memory space access. Format as specified in the PCI 2.2 Local Bus
Specification
Access: See below.
31 24 23 43210
RWBase FixedBase
PREF
Type
MSI
Register PCI_BAR0
Bits Name Description
Reset
Value
PCI Access AHB Access
31:2
4
RWBase Read/Write bits of Base Address register. 0x00 RW RW
23:4 FixedBase
Read-only bits of Base Address register. Specifies
fixed 16Mbyte address range for this BAR.
0x000 RO RO
3 PREF Pre-fetchable memory indicator. 1 RO RO
2:1 Type Relocatable anywhere in 32-bit address space. 00 RO RO
0MSI
Memory space indicator. Hard-wire to 0 for memory
space.
0RORO