FUSB308B datasheet(39/53 Pages) ONSEMI

39 / 53 page

FUSB308B

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Table 31. COMMAND (continued)

Address: 23h

Reset Value: 0x00

Type: Read/Write (Auto−Clear)

Bit #

COMMAND Description

Settings

Size

(Bits)

R/W/C

Name

0110

0110b

DisableSourceVbus. Disable sourcing power over Vbus.

This COMMAND does not disable PWRSTAT.VBUS_VAL

detection

0111

0111b

SourceVbusDefaultVoltage. Enable sourcing vSafe5V over

Vbus and enable Vbus present detection. Source shall

transition to vSafe5V if at a high voltage. The FUSB308B will

ignore this command and assert the FAULTSTAT.I2C_ERR if

it has sinking power over Vbus enabled

1000

1000b

SourceVbusHighVoltage. Execute sourcing high voltage

over Vbus.

FUSB308B will ignore this command and assert the

FAULTSTAT.I2C_ERR

1001

1001b

LOOK4CON. Start DRP Toggling if ROLECTRL.DRP = 1b.

If ROLECTRL.CC1/CC2 = 01b start with Rp,

if ROLECTRL.CC1/CC2 =10b start with Rd.

If ROLE_CONTROL.CC1/CC2 are not either 01b/01b or

10b/10b, then do not start toggling.

The TCPM shall issue .

COMMAND.LOK4CON to enable the device to restart

Connection Detection in cases where the ROLECTRL

contents will not change. An example of this is when a

potential connection as a Source occurred but was further

debounced by the TCPM to find the Sink disconnected. In

this case a Source Only or DRP should go back to its

Unattached.Src state. This would result in ROLECTRL

staying the same

1010

1010b

RxOneMore. Configure the receiver to automatically clear the

RXDETECT register after sending the next GoodCRC.

This is used to shutdown reception of packets at a known

point regardless of packet separation or the depth of the

receive FIFO in the device

1100 1100b

1101 1101b

1110 1110b

Reserved. No Action

1111

1111b

I2CIdle, Enter I2C Idle

Table 32. DEVCAP1L

Address: 24h

Reset Value: FUSB308B: DBh

Type: Read

Bit #

Name

R/W/C

Size (Bits)

Device Capabilities 1 L Description

7:5

ROLES_SUPPORT

Roles Supported:

000b: Type−C Port Manager can configure the Port as Source only

or Sink only (not DRP)

001b: Source only

010b: Sink only

011b: Sink with accessory support

100b: DRP Only

101b: Source, Sink, DRP, Adapter/Cable all supported

110b: Source, Sink, DRP

110..111b: Not valid

SOP_SUPPORT

0b: All SOP* except SOP’_DBG/SOP”_DBG

1b: All SOP* messages are supported

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