參數資料
型號： EWIXP460AC
廠商： INTEL CORP
元件分類： 微控制器/微處理器
英文描述： 400 MHz, RISC PROCESSOR, PBGA544
封裝： LEAD FREE, PLASTIC, BGA-544
文件頁數： 130/163頁
文件大?。?/td> 1123K
代理商： EWIXP460AC
Package Information
May 2005
Intel IXP45X and Intel IXP46X Product Line of Network Processors Datasheet
69
Document Number: 306261-002
ETHB_TXEN /
SMII_TXCLK
Z
0
VO
O
MII Mode of Operation:
Indicates that the PHY is being presented with nibbles on the MII interface. Asserted
synchronously, with respect to ETHB_TXCLK, at the first nibble of the preamble and remains
asserted until all the nibbles of a frame are presented. This MAC interface does not contain
hardware hashing capabilities local to the interface.
SMII Mode of Operation:
125-MHz clock that is used to send data to a physical interface when operating in a Source
Synchronous SMII mode of operation.
ETHB_RXCLK /
SMII_RXCLK
ZVI
VO
I
MII Mode of Operation:
Externally supplied receive clock.
25 MHz for 100 Mbps operation
2.5 MHz for 10 Mbps
This MAC interface does not contain hardware hashing capabilities local to the interface.
SMII Mode of Operation:
125-MHz clock that is used to sample data being received from a physical interface when
operating in a Source Synchronous SMII mode of operation.
When this interface/signal is enabled and is not being used in a system design, the interface/
signal should be pulled high with a 10-K
resistor.
Table 16.
MII/SMII Interfaces (Sheet 2 of 8)
Name
Power
on
Reset
Normal
After
Reset
Until
Software
Enables
Normal
After
Software
Enables
Type
Description
NOTE:
This table discusses all features supported on the Intel IXP45X and Intel IXP46X Product Line of Network Processors. For details on feature support listed by processor,
see Table 1 on page 14.
For a legend of the Type codes, see Table 10 on page 46.
Please refer to Intel
IXP45X and Intel IXP46X Product Line of Network Processors Developer’s Manual for information on how to select the interface desired
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