• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 33 subscribers
  • Views 291 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DS90UB948-Q1: Basic questions

Sherry Liang
Genius 10255 points
Part Number: DS90UB948-Q1


Dear team,

Could you please help answer below questions?

1. If the highest resolution is only 1080P@30Hz, is it possible to use a set of FPD-LINK III inputs and a set of OPEN LDIs?

2. The deserializer chip does not have to be paired with the DS90UB949 model. As long as it can output 1080P@30Hz FDP-LINK III, right?

3. When other customers use the chip, do they use POC or two separate power lines for power supply? What is the total power of the general screen? Is the fakra used or the HSD interface?

4.DS90UB948-Q1 has 4 High-Speed ​​GPIOs (up to 2 Mbps each). It can output two PWMs at the same time (adjustable duty cycle). One channel is used to control the brightness of the screen backlight. The other output controls a bee. Can the sounder be? In addition, use a channel to make the touch screen INT interrupt to trigger IIC to read the touch screen information?

5. How many key inputs can this chip support? Is it used to set the screen brightness, contrast, color temperature, etc.?

6. This chip does not need to burn the compiler software, but completely change the way of register control, right?
7. Can I control the screen brightness, contrast, color temperature and other conditions through FPD-LINK III?

Thanks & Best Regards,

Sherry

  • 0
    TI__Intellectual 1930 points

    Hi Sherry,

    See my response:

    1. I'm not sure I understand this question. Can you elaborate?
    2. Correct. You can use the 948 with a 947/949/941AS serializer as the partner device.
    3. Typically for display applications, POC is not use. Separate power lines are used. As far as total display power consumption, this is dependent on the panel vendor and their spec. FAKRA is meant for single-ended coax applications, which is less common in display applications. HSD internface with STP is more common for displays.
    4. Are you asking if the GPIOs can be used to drive the brightness of the backlight? It's not completely clear to me what signals you'd like to control over GPIO.
    5. Can you clarify this a bit? If you check the datasheet, it will list all available GPIOs on the device.
    6. Correct, chip can be configured through register control.
    7. This can depend. If the display allows for control of these parameters via GPIO, then it can be feasible. But this depends on the display and the overall application.