IXP45X datasheet(118/148 Pages) INTEL

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

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

Datasheet

August 2006

118

Document Number: 306261-004US

5.6.2.2

USB 1.1 Interface

For timing parameters, see the USB 1.1 specification. The USB 1.1 interface for the

IXP45X/IXP46X network processors supports both a device or function controller only

and a host only controller. The IXP45X/IXP46X network processors USB 1.1 device

interface cannot be line-powered.

To assure proper operation with the IXP45X/IXP46X network processors USB

interfaces, please consult the Intel® IXP45X and Intel® IXP46X Product Line of Network Processors

Hardware Design Guidelines

and the Intel® IXP4XX Product Line of Network Processors

Specification Update.

5.6.2.3

UTOPIA Level 2 (33 MHz)

Figure 19.

UTOPIA Level 2 Input Timings

Table 54.

UTOPIA Level 2 Input Timings Values

Symbol

Parameter

Min.

Max.

Units

Notes

Tsetup

Input setup prior to rising edge of clock. Inputs

included in this timing are UTP_IP_DATA[7:0],

UTP_IP_SOC, AND UTP_IP_FCI, and

UTP_OP_FCI.

8ns

Thold

Input hold time after the rising edge of the

clock. Inputs included in this timing are

UTP_IP_DATA[7:0], UTP_IP_SOC, and

UTP_IP_FCI, and UTP_OP_FCI.

1ns

Figure 20.

UTOPIA Level 2 Output Timings

A9578-01

Thold

Tsetup

Clock

Signals

A9579-01

Tclk2out

Tholdout

Clock

Signals

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