TUSB8044: DisplayPort MST Hub

IgDor

Intellectual 280 points

Part Number: TUSB8044
Other Parts Discussed in Thread: SN65DP159

Hi.

Can we use a TUSB8044 chips as 3-Port DisplayPort MST Hub.

If yes, is there the reference project of this HUB

Thanks in advance.

over 6 years ago

0 Jorge Llamas (SWAT) over 6 years ago

TI__Expert 7395 points

Hello Igor,

No, the TUSB8044 is an standard USB Hub and as defined by the USB Type-C specification:
"USB hub ports shall not implement or pass-through Alternate or Accessory Modes."

We do have a reference design for an "Alternate mode expander" or "Dock" as defined by the USB Type-C specification. Please take a look at the "USB Type-C™ and Power Delivery Minidock With Video and Charging Support Reference Design" at www.ti.com/.../tida-01243 and an evaluation board is available at www.ti.com/.../usb-ctm-minidk-evm

Regards,
Jorge

0 IgDor over 6 years ago in reply to Jorge Llamas (SWAT)

Intellectual 280 points

Hi Jorge.
Thank you for response and advice.
I ask because i saw in chip's datasheet the DisplayPort implementation:

What is here the U7(DP HUB), additional chip? Which one?
Best regards.
Igor.

0 Jorge Llamas (SWAT) over 6 years ago in reply to IgDor

TI__Expert 7395 points

Hello Igor,

That would depend on you application.
If you need a single DFP supporting DP alternate mode, you can just have a DP redriver to compensate for signal loss (e.g. SN65DP159), but if you need multiple DFP with DP support, then you will need an MST Hub/DP splitter like MegaChips' STDP4320 which is being used on the MiniDock reference design.

Regards,
Jorge

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TUSB8044: DisplayPort MST Hub