MPC8358E datasheet(65/96 Pages) FREESCALE

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MPC8358E PowerQUICC™ II Pro Processor Revision 2.1 PBGA Silicon Hardware Specifications, Rev. 1

Freescale Semiconductor

USB

20 USB

This section provides the AC and DC electrical specifications for the USB interface of the MPC8358E.

20.1

USB DC Electrical Characteristics

Table 63 provides the DC electrical characteristics for the USB interface.

20.2

USB AC Electrical Specifications

Table 64 describes the general timing parameters of the USB interface of the device.

Table 63. USB DC Electrical Characteristics

Parameter

Symbol

Min

Max

Unit

High-level input voltage

VIH

2OVDD + 0.3

Low-level input voltage

VIL

–0.3

0.8

High-level output voltage,

IOH = –100 μA

VOH

OVDD – 0.4

—

Low-level output voltage,

IOL = 100 μA

VOL

—0.2

Input current

IIN

—±10

μA

Note:

1. Note that the symbol VIN, in this case, represents the OVIN symbol referenced in Table 1 and

Table 2.

Table 64. USB General Timing Parameters

Parameter

Symbol 1

Min

Max

Unit

Notes

usb clock cycle time

tUSCK

20.83

—

full speed 48MHz

usb clock cycle time

tUSCK

166.67

—

low speed 6MHz

skew between TXP and TXN

tUSTSPN

—5

skew among RXP, RXN and RXD

tUSRSPND

—

full speed transitions

skew among RXP, RXN and RXD

tUSRPND

—

100

low speed transitions

Notes:

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

(signal) for receive signals and t(First two letters of functional block)(state)(signal) for transmit signals. For example,

tUSRSPND symbolizes usb timing (US) for the usb receive signals skew (RS) among RXP, RXN, and RXD

(PND). Also, tUSTSPN symbolizes usb timing (US) for the usb transmit signals skew (TS) between TXP and

TXN (PN).

2.Skew measurements are done at OVDD/2 of the rising or falling edge of the signals.

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