MCIMX503CVM8B datasheet(99/134 Pages) FREESCALE

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Electrical Characteristics

i.MX50 Applications Processors for Consumer Products, Rev. 2

Freescale Semiconductor

4.9.11

USB PHY Parameters

This section describes the USB OTG PHY and the USB host port PHY parameters.

4.9.11.1

USB PHY AC Parameters

Table 74 lists the AC timing parameters for USB PHY.

4.9.11.2

USB PHY Additional Electrical Parameters

Table 75 lists the parameters for additional electrical characteristics for USB PHY.

4.9.11.3

USB PHY System Clocking (SYSCLK)

Table 76 lists the USB PHY system clocking parameters

Table 74. USB PHY AC Timing Parameters

Parameter

Conditions

Min

Typ

Max

Unit

trise

1.5Mbps

12Mbps

480Mbps

0.5

—

300

tfall

1.5Mbps

12Mbps

480Mbps

0.5

—

300

Jitter

1.5Mbps

12Mbps

480Mbps

——

0.2

Table 75. Additional Electrical Characteristics for USB PHY

Parameter

Conditions

Min

Typ

Max

Unit

Vcm DC

(dc level measured at receiver connector)

HS Mode

LS/FS Mode

–0.05

0.8

—0.5

2.5

Crossover Voltage

LS Mode

FS Mode

1.3

—2

Power supply ripple noise

(analog 3.3 V)

< 160 MHz

–50

Power supply ripple noise

(analog 2.5 V)

<1.2 MHz

>1.2 MHz

–10

–50

Power supply ripple noise

(Digital 1.2 V)

All conditions

–50

Table 76. USB PHY System Clocking Parameters

Parameter

Conditions

Min

Typ

Max

Unit

Clock deviation

Reference Clock

frequency 24 MHz

–150

—

150

ppm

Rise/fall time

—

200

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