USB334X datasheet(62/92 Pages) MICROCHIP

62 / 92 page

USB334x

DS00002646A-page 62

 2009-2018 Microchip Technology Inc.

Exiting Headset Audio Mode is the same as exiting Low Power Mode as described in Section 6.5.2, "Exiting Low Power

Mode," on page 57. The RESETB pin can also be pulsed low to reset the USB334x and return to Synchronous Mode.

TABLE 6-13:

PIN DEFINITIONS IN HEADSET AUDIO MODE

Signal

Connected to

Direction

Description

SessVld

DATA[0]

OUT

Output of SessVld comparator

VbusVld

DATA[1]

OUT

Output of VbusVld Comparator (interrupt must be enabled)

IdGndDrv

DATA[2]

Drives ID pin to ground when asserted

0b: Not connected

1b: Connects ID to ground.

DATA[3]

OUT

Driven low

IdGround

DATA[4]

OUT

Asserted when the ID pin is grounded.

0b: ID pin is grounded

1b: ID pin is floating

IdFloat

DATA[5]

OUT

Asserted when the ID pin is floating. IdPullup or

Id_pullup330 must be enabled.

IdFloatRise and IdFloatFall must be enabled.

IdPullup330

DATA[6]

When enabled a 330kΩ pullup is applied to the ID pin. This

bit will also change the trip point of the IdGnd comparator

to the value shown in Table 4-9.

0b: Disables the pull-up resistor

1b: Enables the pull-up resistor

IdPullup

DATA[7]

Connects the 100kΩ pull-up resistor from the ID pin to

VDD3.3

0b: Disables the pull-up resistor

1b: Enables the pull-up resistor

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