MPC8315ECVRAGDA datasheet(41/112 Pages) FREESCALE

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MPC8315E PowerQUICC™ II Pro Processor Hardware Specifications, Rev. 0

Freescale Semiconductor

USB

Figure 23. USB Signals

10.2

On-Chip USB PHY

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

MPC8315E.

For details refer to Tables 7-7 through 7-10, and Table 7-14 in the USB 2.0 Specifications document, and

the pull-up/down resistors ECN updates, all available at www.usb.org.

Table 41 provides the USB clock input (USB_CLK_IN) DC timing specifications.

Table 42 provides the USB clock input (USB_CLK_IN) AC timing specifications.

Table 41. USB_CLK_IN DC Electrical Characteristics

Parameter

Symbol

Min

Max

Unit

Input high voltage

VIH

2.7

NVDD +0.3

Input low voltage

VIL

–0.3

0.4

Table 42. USB_CLK_IN AC Timing Specifications

Parameter/Condition

Conditions

Symbol

Min

Typical

Max

Unit

Frequency range

—

fUSB_CLK_IN

—24

—

MHz

Clock frequency tolerance

—

tCLK_TOL

–0.05

0.05

Reference clock duty cycle

Measured at

1.6 V

tCLK_DUTY

Total input jitter/Time interval error

Peak to peak

value measured

with a second

order high-pass

filter of 500 KHz

bandwidth

tCLK_PJ

—

200

Output Signals

tUSKHOV

USBDR_CLK

Input Signals

tUSIXKH

tUSIVKH

tUSKHOX

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