MPC8309CVMADFC datasheet(36/81 Pages) NXP

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MPC8309 PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 3

Freescale Semiconductor

USB

12 USB

12.1

USB Controller

This section provides the AC and DC electrical specifications for the USB (ULPI) interface.

12.1.1

USB DC Electrical Characteristics

The following table provides the DC electrical characteristics for the USB interface.

The following figures provide the AC test load and signals for the USB, respectively.

Figure 28. USB AC Test Load

Table 35. USB DC Electrical Characteristics

Parameter

Symbol

Min

Max

Unit

High-level input voltage

VIH

2.0

OVDD +0.3

Low-level input voltage

VIL

–0.3

0.8

Input current

IIN

—±5

A

High-level output voltage, IOH = –100 AVOH

OVDD –0.2

—

Low-level output voltage, IOL = 100 AVOL

—0.2

12.1.2

USB AC Electrical Specifications

The following table describes the general timing parameters of the USB interface.

Table 36. USB General Timing Parameters

Parameter

Symbol1

Min

Max

Unit

Note

USB clock cycle time

tUSCK

—

Input setup to USB clock—all inputs

tUSIVKH

4—

—

input hold to USB clock—all inputs

tUSIXKH

1—

—

USB clock to output valid—all outputs (except

USBDR_STP_USBDR_STP)

tUSKHOV

—7

—

USB clock to output valid—USBDR_STP

tUSKHOV

—7.5

—

Output hold from USB clock—all outputs

tUSKHOX

2—

—

Note

1. The symbols used for timing specifications follow the pattern of t(first two letters of functional block)(signal)(state)(reference)(state) for

inputs and t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tUSIXKH symbolizes USB timing

(USB) for the input (I) to go invalid (X) with respect to the time the USB clock reference (K) goes high (H). Also, tUSKHOX

symbolizes us timing (USB) for the USB clock reference (K) to go high (H), with respect to the output (O) going invalid (X) or

output hold time.

Output

Z0 = 50 

OVDD/2

RL = 50 

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