DS90UH948-Q1: function block and schematic help

Tommy Tzeng

Part Number: DS90UH948-Q1

Hi Team,

This is a block diagram for discussions with customer.
The attachment has already complete the schematic part.
could you help confirm the currently design and whether correct? or give us any suggestion and idea.

DS90UH941-2.pdf

DS90UB948-2.pdf

over 5 years ago

0 Michael.Walker over 5 years ago

TI__Mastermind 19720 points

Hi Tommy,

How long are the Coax cables that you are using?

For the 948:

We recommend that VDDIO supply for have its own FB.
MODE_SEL0 with the current resistors is set to single OLDI output and in your diagram you put dual oldi output.
Why is there a resistor on VDD25_CAP?

For the 941

Why did you put 100 Ohm termination resistors on the DSI lines?
For MODE_SEL0 you must it to the number of DSI lanes that you are using. It is currently set to 1 lane, I dont think that you will be using 1 lane.
For MOD_SEL1 you must set it to coax mode.
Are you using continuious mode on the DSI? if not to have a REFCLK

Regards,

Michael W.

0 Tommy Tzeng over 5 years ago in reply to Michael.Walker

Genius 5790 points

Hi Michael,

sorry~reply late.

has disscuss with the customer, waiting for customer to response to me

0 Tommy Tzeng over 5 years ago in reply to Michael.Walker

Genius 5790 points

Hi Michael,

the schematic has modify, please refer the attached.

we LVDS use dual input and output,thanks.

we have some question:

how to set the correct value for 941 and 948 mode? and what need to be reserve for the circuit part? or some that need attention,thanks for your help.

DS90UB941.pdf

DS90UB948.pdf