DS90UB954-Q1: DS90UB933 and US90UB954 initial code support need...

Peter Tseng

Mastermind 6450 points

Part Number: DS90UB954-Q1

Hi Sirs,

My customer designed DS90UB933 with DS90UB954 on their product!

May I have your help to provide the initial sample code?

Thanks.

over 3 years ago

0 Hamzeh Jaradat over 3 years ago

TI__Guru** 113620 points

Hello Peter,

there is no 'initial code' for these devices. If your hardware strap settings (MODE, IDx) on both boards are matching then they should be plug and play.

0 Peter Tseng over 3 years ago in reply to Hamzeh Jaradat

Mastermind 6450 points

Hi Sir,

May I have your help to review the design schematics?

Thanks.

SCHEMATIC1 _DS90UB954.pdf

SCHEMATIC1 _ Serializer_TI933.pdf

SCHEMATIC1 _ Sensor_OX01F10.pdf

0 Hamzeh Jaradat over 3 years ago in reply to Peter Tseng

TI__Guru** 113620 points

Hello Peter,

I will review and come back to you with feedback lately by Friday, December 2nd (since next week there are holidays here in the U.S)

0 Hamzeh Jaradat over 3 years ago in reply to Hamzeh Jaradat

TI__Guru** 113620 points

Hello Peter,

I have reviewed the schematics and here is my feedback to our devices:

DS90UB954 Schematic:
- It looks like that a PoC filter is used, but I can't find any PoC filter on the schematic!
- Make sure PDB pin is the last pin to be power supplied, as per section "9 Power Supply Recommendations". Also, make sure you fulfill the sequence and timing requirements as per this section.

DS90UB933 Schematic:
- VDDIO pin requires 10nF + 100nF caps.
- VDDD pin requires 10nF + 100nF caps as well (Do not share capacitors!).
- VDDPLL pin requires 10nF + 100nF + 4.7uF caps and a FB.
- VDDCML pin requires 10nF + 100nF + 22uF caps and a FB.
- VDDT pin requires 10nF + 100nF + 4.7uF caps.
Please refer to Datasheet "Figure 8-4. Coax Application Connection Diagram".

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DS90UB954-Q1: DS90UB933 and US90UB954 initial code support need...