HD3SS214: Need help in Designing - HD3SS214IZXHR

Hi Srilakshmi,

Our team will get back to you with a response tomorrow.

Best,
Katy

Hello Srilakshmi,

What do you mean by how to connect? What exactly is your concern?

We have this table in the datasheet showing the different ways to map the signals. Is that what you were asking for?

Thanks,

Nir 

Hello Nir,
Actually, we are using the HD3SS214IZXHR for Display port, 
As per table the DDC_CLK and DC_DAT in my case should be floating right as these signals are related to the HDMI 

Also, in my Display port connector I have CONFIG pin but, in the IC, I don't see option to connect the config pin in HD3SS214IZXHR there is no option to connect this pin.
How to manage this?

Thanks,
Srilakshmi 

Hi Nir,
You should check what that CONFIG pin does, but my assumption it tells the mux to which channel to select. It should be connected to the Dx_SEL pin. - 

This is what I found in datasheet they recommended to use TS3USB221.



Actually, we are using TUSB1064RNQT - USB Type-C® DP alt mode 10Gbps linear redriver
The TUSB1064RNQT does not provide dedicated configuration signals
Previously we have used only one display and we have provided pull down resistor's options for config pins like this 


But now we are using 2 TUSB1064RNQT - so how to map the config signals here?

Please help here 

DX_SEL - Low - Aux_A display will be selected 
              - High - Aux_B display will be selected 

So how to connect the config signals to DX_SEL here?

Hello Srilakshmi,

If the redriver doesn't provide the configuration signals in your system, then what does?
The TS3USB221 will just pass them along the system.

Our muxes are passive, they don't require any special configuration signals.
DX_SEL is a basic logic pin that should have a DC input. If the voltage is high enough it will toggle high, and if its low then it will go low. 
This allows to toggle between the AUX channels. 

Thanks,

Nir 

Hello Nir,
Our system will look like this, 
TYPE_C_DOCKING_PD_CONTROLLER_MUX.pdf

From TUSB1064RNQT to TPS65987DDHRSHR we have connected the signals like CTL0/SDA, CTL1, FLIP/SCL.
previously we have used one PD controller and USB redriver there we connected the config1 and config2 signals of display connector to the ground through a pull-down resistor,

But now we are using 2 PD controller and redriver(I have attached the Block diagram of the present design) with the help of this MUX IC HD3SS214IZXHR,

So, in this case same as previous design do I need to connect config1 and config2 signals to the gnd through a pull-down resistor?