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Intel
®
IXP43X Product Line of Network Processors
April 2007 HDG
Document Number: 316844; Revision: 001US 49
Hardware Design Guidelines—Intel
®
IXP43X Product Line of Network Processors
PCI_IRDY_N I/O
Connect signal to same pin between
the two devices.
Connect a 10-KΩ pull-up resistor.
I/O Initiator Ready
PCI_STOP_N I/O
Connect signal to same pin between
the two devices.
Connect a 10-KΩ pull-up resistor.
I/O Stop
PCI_PERR_N I/O
Connect signal to same pin between
the two devices.
Connect a 10-KΩ pull-up resistor.
I/O Parity Error
PCI_SERR_N I/O
Connect signal to same pin between
the two devices.
Connect a 10-KΩ pull-up resistor.
I/O System Error
PCI_DEVSEL_N I/O
Connect signal to same pin between
the two devices.
Connect a 10-KΩ pull-up resistor.
I/O Device Select
PCI_IDSEL I
Connect one of the higher order PCI
address signals to the Device.
Connect a 10K pull-up resistor to the
Host.
I Initialization Device Select
PCI_REQ_N[3:1] I
From the Option device, connect output
signal PCI_REQ_N[0] to one of the
PCI_REQ_N[3:0] inputs to the Host.
Note: the PCI_REQ_N[n] must
correspond to the PCI_GNT_N[n],
where n must be the same number in
the square bracket.
I
Arbitration Request
On the Option device, these signals are not
used, they should be pulled high with a 10-KΩ
resistor.
Note: The PCI_REQ_N[n] must correspond
to the PCI_GNT_N[n], where n must
be the same number in the square
bracket.
PCI_REQ_N[0] I
From the Option device, connect output
PCI_REQ_N[0] to one of the
PCI_REQ_N[3:0] inputs to the Host.
Note: the PCI_REQ_N[n] must
correspond to the PCI_GNT_N[n],
where n must be the same number in
the square bracket.
O
Arbitration Request
On the Option device, this signal is an output
and must be connected to one of the
PCI_REQ_N[3:0] inputs to the Host.
Note: The PCI_REQ_N[n] must correspond
to the PCI_GNT_N[n], where n must
be the same number in the square
bracket.
PCI_GNT_N[3:1] O
Connect one of the Host outputs
PCI_GNT_N[3:0] to PCI_GNT_N[0]
input to the Option.
Note: the PCI_GNT_N[n] must
correspond to the PCI_GNT_N[n],
where n must be the same number in
the square bracket.
O
Arbitration Grant
On the Option device, these signals are not
used, they should be pulled high with a 10-K
Ω
resistor.
PCI_GNT_N[0] O
Connect one of the Host outputs
PCI_GNT_N[3:0] to PCI_GNT_N[0]
input to the Option.
Note: the PCI_GNT_N[n] must
correspond to the PCI_GNT_N[n],
where n must be the same number in
the square bracket.
I
Arbitration Grant
On the Option device, this signal is an input
and must be connected to one of the
PCI_GNT_N[3:0] outputs of the Host.
Note: The PCI_REQ_N[n] must correspond
to the PCI_GNT_N[n], where n must
be the same number in the square
bracket.
Table 18. PCI Host/Option Interface Pin Description (Sheet 2 of 3)
Name
Type
Field
Device-Pin Connection
Option
Type
Field
Description