11

USB Timing Specifications

Parameter

Symbol

Minimum

Maximum

Units

Notes

D+/D- Transition rise time

75

ns

D+/D- Transition rise time

300

ns

D+/D- Transition fall time

75

ns

D+/D- Transition fall time

300

ns

Rise and Fall time matching

80

125

%

transition from the Idle State

Wakeup delay from USB

suspend mode due to

buttons push

17

ms

Delay from button push to USB operation

Only required if remote wakeup enabled

Wakeup delay from USB

suspend mode due to buttons

push until accurate navigation

50

ms

Delay from button push to navigation

operation. Only required if remote wakeup

enabled

USB reset time

18.7

s

Data Rate

1.4775

1.5225

Mb/s

Average bit rate, 1.5 Mb/s +/- 1.5%

Receiver Jitter Tolerance

-75

75

ns

To next transition, see Figure 13

Receiver Jitter Tolerance

-45

45

ns

For paired transitions, see Figure 13

Differential to EOP

Transition Skew

-40

100

ns

See Figure 14

EOP Width at Receiver

670

ns

Accepts EOP, see Figure 14

Source EOP Width

1.25

1.50

s

Width of SE0 interval during

Differential Transition

210

ns

See Figure 11.

Differential Output Jitter

-95

95

ns

To next transition, see Figure 15

Differential Output Jitter

-150

150

For paired transitions, see Figure 15

Figure 10. Data Signal Rise and Fall Times

10%

10%

90%

90%

Rise Time

Fall Time

D+

D

PixArt Imaging Inc.

ADNS-2700 Single Chip USB Optical Mouse Sensor

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PixArt Imaging Inc.