TUSB8044AI datasheet(20/63 Pages) TI1

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TUSB8044A

SLLSF92 – FEBRUARY 2019

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The TUSB8044A supports the Billboard Alternate Mode Capability Descriptor. The dwAlternateModeVdo field in

the descriptor defaults to 0x00001C45 to align with DisplayPort Alt mode VDO with capabilities described in

Table 5. The default can be changed from OTP or EEPROM/SMbus. All dwAlternateModeVdo bits are

accessible from the EEPROM/SMbus but only some of the bits are accessible thru OTP.

Table 5. DisplayPort Capabilities VDO

Bit(s)

Default Value

Description

OTP Configurable

1:0

01b

00b = Reserved

01b = UFP_D capable

10b = DFP_D capable

11b = Both UFP

Yes

Supports DP Standard signalling rates

5:3

000b

Reserved

0b = DP Interface presented on USB-C plug

1b = DP Interface presented on USB-C

receptacle

Yes

0b = USB 2.0 signalling may be required in

DisplayPort configuration

1b = USB 2.0 signally not required in

DisplayPort configuration

Yes

9:8

00b

Reserved

12:10

111b

DFP_D pin assignments supported.

000b = DFP_D pin assignments are not

supported.

xx1b = Pin Assignment C is supported.

x1xb = Pin Assignment D is supported.

1xxb = Pin Assignment E is supported.

Yes

17:13

00000b

Reserved

20:18

000b

UFP_D pin assignments supported.

000b = UFP_D pin assignments are not

supported.

xx1b = Pin Assignment C is supported.

x1xb = Pin Assignment D is supported.

1xxb = Pin Assignment E is supported.

Yes

31:21

00000000000b

Reserved

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