MPC8308CVMADDA datasheet(23/95 Pages) NXP

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MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 4

Freescale Semiconductor

USB

9USB

9.1

USB Dual-Role controllers

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

9.1.1

USB DC electrical characteristics

This table lists the DC electrical characteristics for the USB interface.

9.1.2

USB AC electrical specifications

This table lists the general timing parameters of the USB-ULPI interface.

Output clock to output valid

tGCLKNV

—

Timer alarm to output valid

tTMRAL

——

—

Note:

1. The timer can operate on rtc_clock or tmr_clock. These clocks get muxed and any one of them can be selected.

2. Asynchronous signals.

3. Inputs need to be stable at least one TMR clock.

Table 30. USB DC Electrical Characteristics

Parameter

Symbol

Min

Max

Unit

High-level input voltage

VIH

LVDD + 0.3

Low-level input voltage

VIL

–0.3

0.8

Input current

IIN

—±5

A

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

LVDD – 0.2

—

Low-level output voltage, IOL = 100 AVOL

—0.2

Note:

1. The symbol VIN, in this case, represents the NVIN symbol referenced in Table 1 and Table 2.

Table 31. USB General Timing Parameters

Parameter

Symbol 1

Min

Max

Unit

Notes

USB clock cycle time

tUSCK

—

1, 2

Input setup to USB clock—all inputs

tUSIVKH

—

1, 4

Input hold to USB clock—all inputs

tUSIXKH

—

1, 4

Table 29. IEEE 1588 Timer AC Specifications (continued)

Parameter

Symbol

Min

Max

Unit

Notes

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