FWIXP425AB Intel, FWIXP425AB Datasheet - Page 81

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FWIXP425AB

Manufacturer Part Number
FWIXP425AB
Description
Manufacturer
Intel
Datasheet

Specifications of FWIXP425AB

Core Operating Frequency
266MHz
Package Type
BGA
Pin Count
492
Mounting
Surface Mount
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Operating Temperature Classification
Industrial
Lead Free Status / Rohs Status
Not Compliant

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Design Checklist—Intel
Appendix A Design Checklist
A.1
Warning:
Table 21.
A.2
December 2007
Document Number: 252817-008US
This checklist highlights design considerations that should be reviewed prior to
manufacturing a system board that implements an Intel
Network Processors and IXC1100 Control Plane Processor. A check box labeled
“complete?” is provided to the user to mark completion while they go through the
checklist.
This is not a complete list and does not guarantee that a design will function properly.
For more detailed information, see the Intel
Processors and IXC1100 Control Plane Processor Datasheet, Intel
of Network Processors and IXC1100 Control Plane Processor Developer’s Manual, and
the following chapters of this document.
The Intel
reviewed to ensure that specification and documentation updates have been
incorporated into the design properly
Checklist
The following set of tables provide design considerations for the various interfaces of a
design. Each table describes one of those portions and is titled accordingly. Contact
your Intel field representative in the event of questions or issues regarding the
interpretation of the information in these tables.
Listed in the signal definition tables — starting at
page 82
the particular enabled interface is not being used in the application. These external
resistor requirements are only needed if the particular model of IXP42X product line or
IXC1100 control plane processor has the particular interface enabled and the interface
is not required in the application. Unless noted otherwise, all recommendations for
signals that should be pulled high imply pulling them high to Vccp (3.3 V).
All IXP42X product line and IXC1100 control plane processors’ I/O pins are not 5-V
tolerant.
Table 21
document.
Signal Type Definitions
SDRAM Interface
These series resistors should be placed as close as possible to processor. It is
recommend that values are tuned based on signal integrity simulations using the
processors IBIS model.
Symbol
PWR
GND
N/C
I/O
OD
O
I
®
IXP42X product line and IXC1100 control plane processors
— are pull-up an pull-down resistor recommendations that are required when
®
presents the legend for interpreting the Type field in the other tables in this
IXP4XX Product Line of Network Processors Specification Update should be
Input pin only
Output pin only
Pin can be either an input or output
Open Drain pin
Power pin
Ground pin
No Connect
Intel
®
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
Description
.
®
IXP42X Product Line of Network
Table 22, “SDRAM Interface” on
®
IXP42X Product Line of
®
Hardware Design Guidelines
IXP42X Product Line
81

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