参数资料
型号: EWIXP455ABT
厂商: INTEL CORP
元件分类: 微控制器/微处理器
英文描述: 266 MHz, RISC PROCESSOR, PBGA544
封装: LEAD FREE, PLASTIC, BGA-544
文件页数: 105/163页
文件大小: 1123K
代理商: EWIXP455ABT
Package Information
May 2005
Intel IXP45X and Intel IXP46X Product Line of Network Processors Datasheet
46
Document Number: 306261-002
4.2
Functional Signal Definitions
The signal definition tables list pull-up and pull-down resistor recommendations when the
particular enabled interface is not being used in the application. These external resistor
requirements are only needed if the particular model of IXP45X/IXP46X network processors has
the particular interface enabled and the interface is not required in the application.
Warning:
None of the IXP45X/IXP46X network processors’ I/O pins are 5-V tolerant.
Disabled features within the IXP45X/IXP46X network processors do not require external resistors,
as the processor will have internal pull-up or pull-down resistors enabled as part of the disabled
interface. To determine which interfaces are not enabled within the IXP45X/IXP46X network
processors, see Table 1 on page 14.
Table 10 presents the legend for interpreting the Type field in the other tables in this section of the
document.
IXP455
A0
533
GWIXP455ADT
Extended
IXP455
A0
400
GWIXP455ACT
Extended
IXP455
A0
266
GWIXP455ABT
Extended
Table 9.
Intel IXP45X Product Line Part Numbers: Lead Free (pb-free) Packaging
Device
Stepping
Speed
(MHz)
Part Number
Temperature
Offering
IXP455
A0
533
EWIXP455AD
Commercial
IXP455
A0
400
EWIXP455AC
Commercial
IXP455
A0
266
EWIXP455AB
Commercial
IXP455
A0
533
EWIXP455ADT
Extended
IXP455
A0
400
EWIXP455ACT
Extended
IXP455
A0
266
EWIXP455ABT
Extended
Table 8.
Intel IXP45X Product Line Part Numbers: Lead (pb) Packaging (Sheet 2 of 2)
Device
Stepping
Speed
(MHz)
Part Number
Temperature
Offering
Table 10.
Signal Type Definitions (Sheet 1 of 2)
Symbol
Description
I
Input pin only
O
Output pin only
I/O
Pin can be either an input or output
OD
Open Drain pin
PWR
Power pin
GND
Ground pin
1
Driven to Vcc
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