TUSB8044AI datasheet(42/63 Pages) TI1

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TUSB8044A

SLLSF92 – FEBRUARY 2019

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8.5.26 Billboard Configuration

Figure 27. Register Offset 2Bh (Billboard Configuration)

Bit No.

Reset State

Table 34. Bit Descriptions – Billboard Configuration.

Bit

Field

Type

Description

7:4

VCONN_PWR

VCONN power. This field is used when SMBus mode is selected.

When I2C mode is selected, this field is read-only and will always

return 1000b. The TUSB8044A will use value programmed into this

Descriptor.

0000b: 1 Watt

0001b: 1.5 Watts

0010b: 2 Watts

0011b: 3 Watts

0100b: 4 Watts

0101b: 5 Watts

0110b: 6 Watts

0111b: Reserved.

1XXXb: The adapter does NOT require any Vconn power.

3:2

bbConfigured[1:0]

bmConfigured[1:0]. This field is used when SMBus mode is selected.

Controls the bmConfigured[1:0] fields in the Billboard Capability

Descriptor. When I2C mode is selected, then bmConfigured[1:0] fields

are read-only and values are determined by BBbmConfigured[1:0]

pins.

00b: Unspecified Error

01b: Alternate Mode Configuration Not attempted.

10b: Alternate Mode configured attempted but unsuccessful.

11b: Alternate Mode configured successfully.

bAdditionalFailureInfo

bAdditionalFailureInfo. This field is used when SMBus mode is

selected. This field is ignored if VCONN_PWR[3] is set. The value

programmed into this field will be presented in the

bAdditionalFailureInfo field in the Billboard Capability Descriptor.

When in I2C mode, this field is read-only and defaults to 0.

BillboardEN

Billboard Enable. This field is used when SMBus mode is selected.

When I2C mode is selected, this field is read-only and Billboard

connected state is determined by BBEN pin.

0b: Billboard not connected.

1b: Billboard connected.

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