Datasheet
Hi-Speed USB Host, Device or OTG PHY with ULPI Low Pin Interface
Datasheet
SMSC USB3300 27 Revision 1.1 (01-24-13)
DATASHEET
6.1.4.6 Interface Control: Address = 07-09h (read), 07h (write), 08h (set), 09h (clear)
6.1.4.7 OTG Control: Address = 0A-0Ch (read), 0Ah (write), 0Bh (set), 0Ch (clear)
FIELD NAME BIT DEFAULT DESCRIPTION
6-pin FsLsSerialMode 0 0b Changes the ULPI interface to a 6-pin Serial Mode. The PHY will
automatically clear this bit when exiting serial mode.
3-pin FsLsSerialMode 1 0b Changes the ULPI interface to a 3-pin Serial Mode. The PHY will
automatically clear this bit when exiting serial mode.
Reserved 2 0b Driven low.
ClockSuspendM 3 0b Enables Link to turn on 60MHz CLKOUT in serial mode.
0b: Disable clock in serial mode.
1b: Enable clock in serial mode.
AutoResume 4 0b Only applicable in Host mode. Enables the PHY to automatically
transmit resume signaling. This function is detailed in Section
6.1.7.4, "Host Resume K".
IndicatorComplement 5 0b Inverts the EXTVBUS signal. This function is detailed in Section
6.5.4, "External Vbus Indicator".
IndicatorPassThru 6 0b Disables anding the internal VBUS comparator with the
EXTVBUS input when asserted. This function is detailed in
Section 6.5.4.
InterfaceProtectDisable 7 0b Used to disable the integrated STP pull-up resistor used for
interface protection. This function is detailed in Section 6.1.9.3,
"Interface Protection".
FIELD NAME BIT DEFAULT DESCRIPTION
IdPullup 0 0b Connects a pull-up resistor from the ID pin to VDD3.3
0b: Disables the pull-up resistor
1b: Enables the pull-up resistor
DpPulldown 1 1b Enables the 15k Ohm pull-down resistor on DP.
0b: Pull-down resistor not connected to DP
1b: Pull-down resistor connected to DP
DmPulldown 2 1b Enables the 15k Ohm pull-down resistor on DM.
0b: Pull-down resistor not connected to DM
1b: Pull-down resistor connected to DM
DischrgVbus 3 0b 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 4 0b This bit is only used during SRP. Connects a resistor from VBUS
to VDD3.3 to charge VBUS above the SessValid threshold.
0b: disconnect resistor from VBUS to VDD3.3
1b: connect resistor from VBUS to VDD3.3