Datasheet

Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver
Datasheet
Revision 1.0 (07-14-09) 20 SMSC USB3320
DATASHEET
4.7 OTG Electrical Characteristics
Note 4.8 The R
VPD
and R
VPU
values include the required 1kΩ external R
VBUS
resistor.
4.8 USB Audio Switch Characteristics
Table 4.7 OTG Electrical Characteristics
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SessEnd trip point V
SessEnd
0.2 0.5 0.8 V
SessVld trip point V
SessVld
0.8 1.4 2.0 V
VbusVld trip point V
VbusVld
4.4 4.58 4.75 V
A-Device Impedance R
IdGnd
Maximum A device
Impedance to ground on ID
pin
100 kΩ
ID Float trip point V
IdFloat
1.9 2.2 2.5 V
VBUS Pull-Up R
VPU
VBUS to VDD33 Note 4.8
(ChargeVbus = 1)
1.29 1.34 1.45 kΩ
VBUS Pull-down R
VPD
VBUS to GND Note 4.8
(DisChargeVbus = 1)
1.55 1.7 1.85 kΩ
VBUS Impedance R
VB
VBUS to GND 40 75 100 kΩ
ID pull-up resistance R
ID
IdPullup = 1 80 100 120 kΩ
ID weak pull-up resistance R
IDW
IdPullup = 0 1 MΩ
ID pull-dn resistance R
IDPD
IdGndDrv = 1 1000 Ω
Table 4.8 USB Audio Switch Characteristics
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Minimum “ON” Resistance R
ON_Min
0 < V
switch
< V
DD33
2.7 5 5.8 Ω
Maximum “ON” Resistance R
ON_Max
0 < V
switch
< V
DD33
4.5 7 10 Ω
Minimum “OFF”
Resistance
R
OFF_Min
0 < V
switch
< V
DD33
1MΩ