USB3280 SMSC Corporation, USB3280 Datasheet - Page 20

• Manufacturer Part Number: USB3280
• Description: Hi-Speed USB Device PHY
• Manufacturer: SMSC Corporation

Revision 1.2 (10-27-06)
Level 1
Level 2
Point 1
Point 2
Point 3
Point 4
Point 5
Point 6
The eye pattern in
test point TP2 of
Figure
given as a percentage of the unit interval (UI), which represents the nominal bit duration for a 480
Mbit/s transmission rate.
Figure 6.5 Eye Pattern for Receive Waveform and Eye Pattern Definition
6.3). The corresponding signal levels and timings are given in the table below. Timings are
575mV
-575mV
0V
0V
150mV
150mV
-150mV
-150mV
Level 1
Level 2
Figure
Figure 6.5
VOLTAGE LEVEL (D+, D-)
6.3) or a device without a captive cable (signal applied at test point TP3 of
0%
defines the receiver sensitivity requirements for a hub (signal applied at
DATASHEET
Point 1
Point 5
Point 3
20
Point 4
Point 2
Point 6
Hi-Speed USB Device PHY with UTMI Interface
N/A
N/A
15% UI
85% UI
35% UI
65% UI
35% UI
65% UI
TIME (% OF UNIT INTERVAL)
100%
Differential
Differential
Differential
400mV
-400mV
0 Voltｓ
SMSC USB3280
Datasheet