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Differential Interface Electrical Characteristics
Copyright © 2008 Marvell Doc. No. MV-S104859-U0 Rev. E
December 2, 2008, Preliminary Document Classification: Proprietary Information Page 127
Table 71: USB High Speed Driver and Receiver Characteristics
8.7.4.2 USB Interface Driver Waveforms
Figure 44: Low/Full Speed Data Signal Rise and Fall Time
Min Max
Baud Rate BR Mbps -
Baud rate tolerance Bppm -500.0 500.0 ppm -
Data signaling high VHSOH 360.0 440.0 mV -
Data signaling low VHSOL -10.0 10.0 mV -
Data rise time THSR 500.0 - ps 1
Data fall time THSF 500.0 - ps 1
Data source jitter 2
Differential input signaling levels 3
Data signaling common mode voltage range VHSCM -50.0 500.0 mV -
Receiver jitter tolerance 3
Notes:
General Comment: For more information, refer to Universal Serial Bus Specification, Revision 2.0, April 2000.
General Comment: The load is 100 ohm differential for these parameters, unless otherwise specified.
General Comment: To comply with the values presented in this table, refer to your local
Marvell representative for register settings.
1. Defined from 10% to 90% for rise time and 90% to 10% for fall time.
2. Source jitter specified by the "TX eye diagram pattern template" figure.
3. Receiver jitter specified by the "RX eye diagram pattern template" figure.
See note 3
See note 3
See note 2
Driver Parameters
Receiver Parameters
Note s
High Speed
480.0
Description Symbol Units
VCRS
Rise Time Fall Time
TR TF
90%
10% 10%
90%
Differential
Data Lines