DHQ1ECCSECETS1SR1WH View Datasheet(PDF) - Intel

Part Name

Description

Manufacturer

DHQ1ECCSECETS1SR1WH

Intel® Quark SoC X1000

Intel 

Electrical Characteristics—Intel® Quark SoC X1000

Table 35. USB 2.0 Interface Timings (Sheet 2 of 2)

Symbol

Parameter

Min

Max

Units

Notes

Fig

Full-speed Source (Note 7)

t114

EOP Width: Must accept as EOP

670

—

ns

4

9

t115

Width of SE0 interval during differential transition

—

210

ns

Notes:

1.

Driver output resistance under steady state drive is specified at 28  at minimum and 43  at maximum.

2.

Timing difference between the differential data signals.

3.

Measured at crossover point of differential data signals.

4.

Measured at 50% swing point of data signals.

5.

Measured from last crossover point to 50% swing point of data line at leading edge of EOP.

6.

Measured from 10% to 90% of the data signal.

7.

Full-speed Data Rate has minimum of 11.97 Mb/s and maximum of 12.03 Mb/s.

8.

Low-speed Data Rate has a minimum of 1.48 Mb/s and a maximum of 1.52 Mb/s.

Figure 6. USB Rise and Fall Time

Figure 7. USB Jitter

T period

Rise Time

Fall Time

CL

Differential

Data Lines

10%

90%

90%

10%

CL

tR

tF

Low-speed: 75 ns at CL = 50 pF, 300 ns at CL = 350 pF

Full-speed: 4 to 20 ns at CL = 50 pF

High-speed: 0.8 to 1.2 ns at CL = 10 pF

Differential

Data Lines

Jitter

Crossover

Points

Consecutive

Transitions

Paired

Transitions

October 2013

Document Number: 329676001US

Intel® Quark SoC X1000

DS

77

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