USB3343 datasheet(66/92 Pages) MICROCHIP

66 / 92 page

USB334x

DS00002646A-page 66

 2009-2018 Microchip Technology Inc.

7.1.1.7

OTG Control

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

ClockSuspendM

rd/w/s/c

Enables Link to turn on 60 MHz 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, "Host Resume

K," on page 53.

IndicatorComplement

rd/w/s/c

Inverts the EXTVBUS signal. This function is detailed

in Section 5.7.2, "VBUS Monitoring and VBUS

Pulsing," on page 35.

Note:

The EXTVBUS signal is always high on the

USB334x.

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, "VBUS Monitoring and

VBUS Pulsing," on page 35.

Note:

The EXTVBUS signal is always high on the

USB334x.

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, "Interface Protection," on page 57.

Field Name

Bit

Access

Default

Description

IdPullup

rd/w/s/c

Connects a 100 kΩ 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 15 kΩ pull-down resistor on DP.

0b: Pull-down resistor not connected

1b: Pull-down resistor connected

DmPulldown

rd/w/s/c

Enables the 15 kΩ pull-down resistor on DM.

0b: Pull-down resistor not connected

1b: Pull-down resistor connected

DischrgVbus

rd/w/s/c

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

rd/w/s/c

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

Field Name

Bit

Access

Default

Description

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