IXP45X INTEL [Intel Corporation], IXP45X Datasheet - Page 61
IXP45X
Manufacturer Part Number
IXP45X
Description
Product Line of Network Processors
Manufacturer
INTEL [Intel Corporation]
Datasheet
1.IXP45X.pdf
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Table 15.
August 2006
61
ETHB_RXDATA[3:0] /
SMII_RXDATA[0] /
SMII_RXDATA[1] /
SMII_RXDATA[2] /
SMII_RXDATA[3]
ETHB_RXDV /
SMII_RXSYNC
Note:
†
††
Name
This table discusses all features supported on the Intel
see
For a legend of the Type codes, see
Please refer to Intel
Table 1 on page
MII/SMII Interfaces (Sheet 3 of 7)
Power
Reset
on
®
Z
Z
13.
IXP45X and Intel
†
Reset
VI
VI
†
Table 8 on page
Software
®
Enables
Normal
Reset
After
Until
IXP46X Product Line of Network Processors Developer’s Manual for information on how to select the interface desired
VI
VI
Software
Possible
Configur
Enables
ations
43.
After
®
VI
VI
IXP45X and Intel
Type
I
I
†
MII Mode of Operation:
Receive data bus from PHY, data sampled synchronously with respect to ETHB_RXCLK. This MAC
interface does not contain hardware hashing capabilities local to the interface.
SMII Mode of Operation:
Each SMII_RXDATA line is a separate physical port
ETHB_RXDATA[3] is multiplexed with SMII_RXDATA[3],
ETHB_RXDATA[2] is multiplexed with SMII_RXDATA[2],
ETHB_RXDATA[1] is multiplexed with SMII_RXDATA[1],
ETHB_RXDATA[0] is multiplexed with SMII_RXDATA[0]
The data on these signal are received synchronously with respect to the rising edge of SMII_CLK
when operating as an SMII interface and synchronously with respect to the rising edge of
SMII_RXCLK when operating as a Source Synchronous SMII interface
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-KΩ resistor. When this interface is disabled via the NPE-B
Ethernet 0 and/or the NPE Ethernet 1-3 soft fuse (refer to Expansion Bus Controller chapter of
the Intel
and is not being used in a system design, this interface/signal is not required for any connection.
One special configuration exists for the board designer. When NPE B is configured in SMII mode
of operation and a subset of the four SMII ports are utilized (i.e. All four are enabled but only two
are being connected). The unused inputs must be tied high with a 10-KΩ resistor.
MII Mode of Operation:
Receive data valid, used to inform the MII interface that the Ethernet PHY is sending data. This
MAC interface does not contain hardware hashing capabilities local to the interface.
SMII Mode of Operation:
In Source Synchronous mode of operation, this signal is an input from a synchronous pulse
created once every 10 SMII_RXCLK reference clocks to signal the start of the next 10 bits of data
to be received. SMII_RXCLK Reference clock operates at 125MHz.
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-KΩ resistor. When this interface is disabled via the NPE-B
Ethernet 0 and/or the NPE Ethernet 1-3 soft fuse (refer to Expansion Bus Controller chapter of
the Intel
and is not being used in a system design, this interface/signal is not required for any connection.
®
IXP46X Product Line of Network Processors. For details on feature support listed by processor,
®
®
IXP45X and Intel
IXP45X and Intel
Intel
®
IXP45X and Intel
®
®
IXP46X Product Line of Network Processors Developer’s Manual)
IXP46X Product Line of Network Processors Developer’s Manual)
®
Description
IXP46X Product Line of Network Processors Datasheet
Document Number:
306261-004US
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