USB3300 datasheet(25/55 Pages) SMSC

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Hi-Speed USB Host, Device or OTG PHY with ULPI Low Pin Interface

Datasheet

SMSC USB3300

Revision 1.08 (11-07-07)

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

Changes the ULPI interface to a 6-pin Serial Mode. The PHY will

automatically clear this bit when exiting serial mode.

3-pin FsLsSerialMode

Changes the ULPI interface to a 3-pin Serial Mode. The PHY will

automatically clear this bit when exiting serial mode.

Reserved

Driven low.

ClockSuspendM

Enables Link to turn on 60MHz CLKOUT in serial mode.

0b: Disable clock in serial mode.

1b: Enable clock in serial mode.

AutoResume

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

Inverts the EXTVBUS signal. This function is detailed in Section

6.5.4, "External Vbus Indicator".

IndicatorPassThru

Disables anding the internal VBUS comparator with the

EXTVBUS input when asserted. This function is detailed in

Section 6.5.4.

InterfaceProtectDisable

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

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

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

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

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

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

USB3300 датащи(PDF) 25 Page - SMSC Corporation

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