USB3290_07 Datasheet, PDF (16/46 Pages) SMSC Corporation – Small Footprint Hi-Speed USB 2.0 Device PHY with UTMI Interface

Small Footprint Hi-Speed USB 2.0 Device PHY with UTMI Interface
Datasheet
Table 6.5 Dynamic Characteristics: Digital UTMI Pins (Note 6.5)
PARAMETER
UTMI Timing
DATA[7:0]
RXVALID
RXACTIVE
RXERROR
LINESTATE[1:0]
TXREADY
DATA[7:0]
TXVALID
OPMODE[1:0]
XCVRSELECT
TERMSELECT
DATA[7:0]
TXVALID
OPMODE[1:0]
XCVRSELECT
TERMSELECT
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
T_PD
Output Delay. Measured
2
from PHY output to the
rising edge of CLKOUT
5
ns
T_SU
Setup Time. Measured
5
ns
from PHY input to the
rising edge of CLKOUT.
T_H
Hold time. Measured from 0
ns
the rising egde of
CLKOUT to the PHY input
signal edge.
Note 6.5 V_DD3.3 = 3.0 to 3.6V; V_SS = 0V; T_A = -40^oC to 85^oC; unless otherwise specified.
6.1
Driver Characteristics of Full-Speed Drivers in High-Speed
Capable Transceivers
The USB3290 uses a differential output driver to drive the USB data signal onto the USB cable.
Figure 6.1 Full-Speed Driver VOH/IOH Characteristics for High-speed Capable Transceiveron page 17
shows the V/I characteristics for a full-speed driver which is part of a high-speed capable transceiver.
The normalized V/I curve for the driver must fall entirely inside the shaded region. The V/I region is
bounded by the minimum driver impedance above (40.5 Ohm) and the maximum driver impedance
below (49.5 Ohm). The output voltage must be within 10mV of ground when no current is flowing in
or out of the pin.
Revision 1.5 (11-02-07)
16
DATASHEET
SMSC USB3290