• State Resolved
  • Locked Locked
  • Replies 7 replies
  • Answers 2 answers
  • Subscribers 33 subscribers
  • Views 346 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

DS90CF384A: Alternative

pie
Prodigy 165 points
Part Number: DS90CF384A
Other Parts Discussed in Thread: DS90C385A, , DS90CF386, DS90UB903Q-Q1, DS90UB904Q-Q1, TSC2007, DS99R106, DS99R105, DS90C124, DS90C241

Hello;

 

In an application I want to interface the RGB bus of a MPU to a 16bit RGB display over about 30cm cable.

The D-Clock frequency is 12Mhz

I decided to use a serdes combination for this.

Because we already use it  in another application I want to use the DS90C385A as serializer.

As a deserializer I want to use the DS90CF384A or the DS90CF386.

What is the difference between DS90CF384A and DS90CF386?

 

The datasheet for DS90CF384A is limited and these IC's seem to be outdated.

Are these serdes IC's recommended or are other IC's recommended for my application?

With kind regards;

Pieter

 

 

  • 0
    TI__Guru* 93610 points

    Hello Pieter,

    I am not sure if this device pair will work since the PCLK you are looking for is lower than 20MHz which is the minimum supported by this device.

    You may use the following pair:

    DS90UB903Q-Q1 SER - 18-bit Parallel input - 10-43MHz - FPD-Link III
    DS90UB904Q-Q1 DES - 18-bit Parallel output - 10-43MHz - FPD-Link III

  • 0 in reply to Hamzeh Jaradat
    Prodigy 165 points

    Hello Hamzeh;

    The Pclk turns out to be 10Mhz typical.

    So worstcase could be beneath 10Mhz.

    Is DS90UB903Q/DS90UB904Q still a good choice then?

    Does DS90UB903Q/DS90UB904Q support clock stretching of an connected IIC touchscreen controller (TSC2007)?

    Regards;

    Pieter

  • 0 in reply to pie
    TI__Guru* 93610 points

    Hello Pieter,

    if you think the PCLK may be beneath 10MHz, and I2C clock stretching is needed, then I recommend you use for example the following pair:

    DS90UB925-Q1 SER - 18bit/24bit Parallel input - PCLK 5-85MHz - FPD-Link III
    DS90UB926-Q1 DES - 18bit/24bit Parallel output - PCLK 5-85MHz - FPD-Link III

  • 0 in reply to Hamzeh Jaradat
    Prodigy 165 points

    Hello Hamzeh;

    The recommended options are a bit expensive for our application.

    If we drop the I2C functionality, we could use the DS99R105/DS99R106 combination and use seperate I2C lines.

    What is the life-cycle status of these IC's?

    Do you have a better option?

    Display: 480x272, 16bit RGB, Enable synchronised, 3V3, BCKL=10Mhz.

    Regards;

    Pieter 

  • +1 in reply to pie
    TI__Guru 62430 points

    Hi Peter,

    Hamzeh is OOO today, he will resume support of this activity on Monday. Thanks for your patience. 

    Regards, 

    Logan

  • 0 in reply to Logan Cummins
    TI__Guru* 93610 points

    Hello Pieter,

    Yes, the DS99R105/DS99R106 combination is a good alternative.

    These devices are active in production since ~15 years and there is no discontinuity defined for any time soon.

    Alternatively, you may select the DS90C241 and DS90C124. These do support PCLK 5MHz to 35MHz.

  • 0 in reply to Hamzeh Jaradat
    Prodigy 165 points

    Hello Hamzeh;

    Thanks for your answer.

    Regards;

    Pieter