UPD360 datasheet(86/221 Pages) MICROCHIP

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UPD360

DS00002084C-page 86

 2016-2017 Microchip Technology Inc.

9.12.1

CC HARDWARE CONTROL REGISTER (CC_HW_CTL)

Address:

0800h

Size:

16 bits

Bits

Description

Type

Default

15:14

SHORT_DET

Defines behavior in standalone DFP mode for handling the short circuit

condition.

0xb: A0 functionality maintained where VBUS short is not checked before

initiating VBUS discharge.

10b: Device initiates VBUS discharge only after short circuit condition has

been removed.

11b: Device initiates VBUS discharge after short circuit condition has been

removed or a time equal to TCYCLE.

Note:

This field only has meaning for standalone DFP operation.

R/W

00b

RESERVED

BLK_PD_MSG

This bit causes the CC debouncer to pause whenever a PD message is

detected by the MAC. This applies for both transmit and receive messages.

After the message is processed

0b: Disable PD message filtering.

1b: Enable PD message filtering.

Note:

This must be enabled for collision detection.

R/W

MATCH_DB_UNITS

This bit defines the units of the Match Debounce Register (MATCH_DEB).

0b: Match debounce has units of 1.6 ms.

1b: Match debounce has units of 100 us.

Note:

1.6 ms is derived from the time to cycle through all thresholds on

both CC pins.

R/W

DEVICE_MODE

Indicates the current mode of the device.

0b: Device is in Companion Mode

1b: Device is in Standalone Mode (UPD360-A/UPD360-B only)

CC_DB_ACTIVE

When this bit reads back 0b, the debouncer is disabled. The CC debouncer is

enabled when it reads back 1b.

Note:

Software may poll this bit to determine when the CC debouncer is

disabled, which can be used as a condition for programming a new

configuration.

DEVICE_STATE

Indicates the current state of the device attachment.

0b: Device is not attached

1b: Device is attached

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