DS90UB925Q-Q1: Default display mode register setting for DS90UB925QSQE/NOPB

pooja ak

Prodigy 30 points

Part Number: DS90UB925Q-Q1

Tool/software:

Dear Team ,

We have planned to use DS90UB925QSQE/NOPB [925 and 926 chip] in one of our project ,

as I marked in below image ,

serializer and target either the deserializer or an I 2C slave attached to the deserializer

At my case thermal sensor---> FPGA--->Serializer[925]---->Deserializer[926]-------> KopinOLED Display [KCO-D720-DA]

My Question is here

1.FPGA will initiate the I2C communication then it communicated to 925 ,via link 926 is communication will establish

Would I connect 926 I2C to OLED DISPLAY AS directly or should I need to use any micro controller b/w 926 and KopinOLED Display [KCO-D720-DA]

2 Required Default display mode register setting for DS90UB925QSQE/NOPB

If my understanding is wrong ,please correct me

*KopinOLED Display [KCO-D720-DA] block Diagram

Thanks,

Pooja Ak

over 1 year ago

+1 Ikram Haque over 1 year ago

TI__Mastermind 23890 points

Hi Pooja,

1. You can connect the I2C bus of the deserializer directly to the I2C port of the Display, with the external pullup. And you would have to set the Display as a Target and enable I2C pass-through. And you could have more devices

This is also described in the "3.2 I2C Master attached to Serializer" section as an example in this app note: https://www.ti.com/lit/an/snla222/snla222.pdf

Please let me know if you have further questions for your specific system

2. Yes, in your case since the FPGA (host controller) is connected to the SER, this would be display mode.

Best regards,
Ikram

0 pooja ak over 1 year ago in reply to Ikram Haque

Prodigy 30 points

Hi Ikram

Thank you so much for your support

Thanks,

Pooja Ak

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DS90UB925Q-Q1: Default display mode register setting for DS90UB925QSQE/NOPB