Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver
Datasheet
FIELD NAME
BIT
ACCESS
DEFAULT DESCRIPTION
ClockSuspendM
3
rd/w/s/c
0b
Enables Link to turn on 60MHz CLKOUT in Serial
Mode or Carkit Mode.
0b: Disable clock in serial or Carkit Mode.
1b: Enable clock in serial or Carkit Mode.
AutoResume
4
5
rd/w/s/c
rd/w/s/c
0b
0b
Only applicable in Host mode. Enables the
transceiver to automatically transmit resume
signaling. This function is detailed in Section 6.2.4.4.
IndicatorComplement
Inverts the EXTVBUS signal. This function is detailed
in Section 5.6.2.
Note:
The EXTVBUS signal is always high on the
USB3320.
IndicatorPassThru
6
7
rd/w/s/c
rd/w/s/c
0b
0b
Disables and’ing the internal VBUS comparator with
the EXTVBUS signal when asserted. This function is
detailed in Section 5.6.2.
Note:
The EXTVBUS signal is always high on the
USB3320.
InterfaceProtectDisable
Used to disable the integrated STP pull-up resistor
used for interface protection. This function is detailed
in Section 6.3.3.
7.1.1.7
OTG Control
Address = 0A-0Ch (read), 0Ah (write), 0Bh (set), 0Ch (clear)
FIELD NAME
BIT
ACCESS
DEFAULT DESCRIPTION
IdPullup
0
rd/w/s/c
0b
Connects a 100kΩ pull-up resistor from the ID pin to
VDD33
0b: Disables the pull-up resistor
1b: Enables the pull-up resistor
DpPulldown
DmPulldown
DischrgVbus
1
2
3
rd/w/s/c
rd/w/s/c
rd/w/s/c
1b
1b
0b
Enables the 15k Ohm pull-down resistor on DP.
0b: Pull-down resistor not connected
1b: Pull-down resistor connected
Enables the 15k Ohm pull-down resistor on DM.
0b: Pull-down resistor not connected
1b: Pull-down resistor connected
This bit is only used during SRP. Connects a resistor
from VBUS to ground to discharge VBUS.
0b: disconnect resistor from VBUS to ground
1b: connect resistor from VBUS to ground
ChrgVbus
DrvVbus
4
5
rd/w/s/c
rd/w/s/c
0b
0b
This bit is only used during SRP. Connects a resistor
from VBUS to VDD33 to charge VBUS above the
SessValid threshold.
0b: disconnect resistor from VBUS to VDD33
1b: connect resistor from VBUS to VDD33
Enables external 5 volt supply to drive 5 volts on
VBUS. This signal is or’ed with DrvVbusExternal.
0b: Do not drive Vbus, CPEN driven low.
1b: Drive Vbus, CPEN driven high.
Revision 1.0 (07-14-09)
SMSC USB3320
DATA6S4HEET
SMSC [ SMSC CORPORATION ]
