IXP45X datasheet(72/148 Pages) INTEL

72 / 148 page

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August 2006

Intel® IXP45X and Intel® IXP46X Product Line of Network Processors Datasheet

Document Number: 306261-004US

USB_HPEN

Enable to the external VBUS power source

USB_HPWR

External VBUS power is in over current condition

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 USB Device soft fuse

(refer to Expansion Bus Controller chapter of the Intel® IXP45X and Intel® IXP46X Product Line of

Network Processors Developer’s Manual) and is not being used in a system design, this interface/signal

is not required for any connection.

Table 21.

Oscillator Interface

Name

Power

Reset†

Normal

After

Reset

Until

Software

Enables

Possible

Configur

ations

After

Software

Enables

Type†

Description

OSC_IN

n/a

33.33-MHz, sinusoidal input signal. Can be driven by an oscillator.

OSC_OUT

n/a

33.33-MHz, sinusoidal output signal. Left disconnected when being driven by an oscillator.

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 13.

†

For a legend of the Type codes, see Table 8 on page 43.

Table 20.

USB Host/Device Interfaces (Sheet 2 of 2)

Name

Power

Reset†

Normal

After

Reset

Until

Software

Enables

Possible

Configur

ations

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 13.

†

For a legend of the Type codes, see Table 8 on page 43.

††

Please refer to the Intel® IXP45X and Intel® IXP46X Product Line of Network Processors Hardware Design Guidelines for additional board design details.

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