USB3370 datasheet(53/75 Pages) MICROCHIP

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DS00001915B-page 53

USB3370

7.1.1.6

Interface Control

Address = 07-09h (read), 07h (write), 08h (set), 09h (clear)

7.1.1.7

OTG Control

Address = 0A-0Ch (read), 0Ah (write), 0Bh (set), 0Ch (clear)

SuspendM

rd/w/s/c

Active low PHY suspend. When cleared the PHY will

enter Low Power Mode as detailed in Section 6.5.

Automatically set when exiting Low Power Mode.

LPM Enable

rd/w/s/c

When enabled the PLL start-up time is shortened to

allow fast start-up for LPM. The reduced PLL start-up

time is achieved by bypassing the VCO process

compensation which was done on initial start-up.

Field Name

Bit

Access

Default

Description

6-pin FsLsSerialMode

rd/w/s/c

When asserted the ULPI interface is redefined to the

6-pin Serial Mode. The PHY will automatically clear

this bit when exiting serial mode.

3-pin FsLsSerialMode

rd/w/s/c

When asserted the ULPI interface is redefined to the

3-pin Serial Mode. The PHY will automatically clear

this bit when exiting serial mode.

CarkitMode

rd/w/s/c

When asserted the ULPI interface is redefined to the

Carkit interface. The PHY will automatically clear this

bit when exiting Carkit Mode.

ClockSuspendM

rd/w/s/c

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

rd/w/s/c

Only applicable in Host mode. Enables the PHY to

automatically transmit resume signaling. This function

is detailed in Section 6.4.1.4.

IndicatorComplement

rd/w/s/c

Inverts the EXTVBUS signal. This function is detailed

in Section 5.7.2.

IndicatorPassThru

rd/w/s/c

Disables and’ing the internal VBUS comparator with

the EXTVBUS signal when asserted. This function is

detailed in Section 5.7.2.

InterfaceProtectDisable

rd/w/s/c

Used to disable the integrated STP pull-up resistor

used for interface protection. This function is detailed

in Section 6.5.4.

Field Name

Bit

Access

Default

Description

IdPullup

rd/w/s/c

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

rd/w/s/c

Enables the 15k Ohm pull-down resistor on DP.

0b: Pull-down resistor not connected

1b: Pull-down resistor connected

DmPulldown

rd/w/s/c

Enables the 15k Ohm pull-down resistor on DM.

0b: Pull-down resistor not connected

1b: Pull-down resistor connected

Field Name

Bit

Access

Default

Description

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