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SN65DSI86EVM: Output Color Bar Pattern without DSI connection

Lars Tischendorf
Prodigy 110 points
Part Number: SN65DSI86EVM
Other Parts Discussed in Thread: TEST2

I am using your SN65DSI86EVM and would like to output a color bar pattern to a DP Monitor (1920*1200) without a DSI connection.

Is this possible?


I used the Panal_Videoregister_Calc - Excelsheet to get the correct register settings and configure the EVM via I2C (Aardvark) as shown in the sample script of the EVM user manual.

The board detects the monitor connection, which is indicated in register 0xF5 bit 1, but the monitor indicates that no video signal is detected.

I can't see any activity on the DP signal lines with scope.

Can you give my an example script with all steps, which I need for my application?

Thanks a lot

Lars

  • +1
    TI__Guru**** 176811 points

    Lars

    Can you please try this color bar example? Can you also make sure TEST2 pin is being pulled high on the EVM?

    Fullscreen 8311.4DP_4DSI_RBR_800x600_Color_Bar.xml Download 
    <aardvark>
    <configure i2c="1" spi="1" gpio="0" tpower="1" pullups="1"/>
    <i2c_bitrate khz="100"/>
    
  <i2c_write addr="0x2D" count="1" radix="16">5C 01</i2c_write> <sleep ms="10"/>

   <i2c_write addr="0x2D" count="1" radix="16">FF 07</i2c_write> <sleep ms="10"/>

======DUMP CFR======
   <i2c_write addr="0x2D" count="0" radix="16">16 </i2c_write> <sleep ms="10"/>

======Read======
    <i2c_read addr="0x2D" count="1" radix="16">00</i2c_read> <sleep ms="10"/>


   <i2c_write addr="0x2D" count="1" radix="16">16 01</i2c_write> <sleep ms="10"/>

   <i2c_write addr="0x2D" count="0" radix="16">16 </i2c_write> <sleep ms="10"/>

======Read======
    <i2c_read addr="0x2D" count="2" radix="16">00</i2c_read> <sleep ms="10"/>

  <i2c_write addr="0x2D" count="1" radix="16">FF 00</i2c_write> <sleep ms="10"/>


======Single 4 DSI lanes======

  <i2c_write addr="0x2D" count="1" radix="16">10 26 </i2c_write> <sleep ms="10"/>

======DSI CLK FREQ======

  <i2c_write addr="0x2D" count="0" radix="16">12 </i2c_write> <sleep ms="10"/>
   <i2c_read addr="0x2D" count="2" radix="16">00</i2c_read> <sleep ms="10"/>



======enhanced framing======

  <i2c_write addr="0x2D" count="1" radix="16">5A 04 </i2c_write> <sleep ms="10"/>


======ADDR 0x93 CFR======

   <i2c_write addr="0x2D" count="0" radix="16">93</i2c_write> <sleep ms="10"/>

======Read======
    <i2c_read addr="0x2D" count="6" radix="16">00</i2c_read> <sleep ms="10"/>

======Pre0dB 1 lanes no SSC======
   <i2c_write addr="0x2D" count="1" radix="16">93 30</i2c_write> <sleep ms="10"/>

======L0mV RBR======
   <i2c_write addr="0x2D" count="1" radix="16">94 20</i2c_write> <sleep ms="10"/>

======POST2 0dB ======
   <i2c_write addr="0x2D" count="1" radix="16">95 00</i2c_write> <sleep ms="10"/>

======PLL ENABLE======
   <i2c_write addr="0x2D" count="1" radix="16">0D 01</i2c_write> <sleep ms="10"/>
   <i2c_write addr="0x2D" count="0" radix="16">0A</i2c_write> <sleep ms="10"/>
   <i2c_read addr="0x2D" count="2" radix="16">00</i2c_read> <sleep ms="10"/>



======Semi-Auto TRAIN ======
   <i2c_write addr="0x2D" count="1" radix="16">96 0A</i2c_write> <sleep ms="20"/>


======ADDR 0x0A CFR======

   <i2c_write addr="0x2D" count="0" radix="16">96</i2c_write> <sleep ms="20"/>

======Read======
    <i2c_read addr="0x2D" count="1" radix="16">00</i2c_read> <sleep ms="10"/>

=====CHA_ACTIVE_LINE_LENGTH=======
    <i2c_write addr="0x2D" count="2" radix="16">20 00 04</i2c_write> <sleep ms="10"/>

=====CHA_VERTICAL_DISPLAY_SIZE=======
    <i2c_write addr="0x2D" count="2" radix="16">24 58 02</i2c_write> <sleep ms="10"/>

=====CHA_SYNC_DELAY=======
    <i2c_write addr="0x2D" count="2" radix="16">28 00 00</i2c_write> <sleep ms="10"/>

=====CHA_HSYNC_PULSE_WIDTH=======
    <i2c_write addr="0x2D" count="2" radix="16">2C 80 80</i2c_write> <sleep ms="10"/>

=====CHA_VSYNC_PULSE_WIDTH=======
    <i2c_write addr="0x2D" count="2" radix="16">30 04 80</i2c_write> <sleep ms="10"/>

=====CHA_HORIZONTAL_BACK_PORCH=======
    <i2c_write addr="0x2D" count="1" radix="16">34 28 </i2c_write> <sleep ms="10"/>

=====CHA_VERTICAL_BACK_PORCH=======
    <i2c_write addr="0x2D" count="1" radix="16">36 09</i2c_write> <sleep ms="10"/>

=====CHA_HORIZONTAL_FRONT_PORCH=======
    <i2c_write addr="0x2D" count="1" radix="16">38 28</i2c_write> <sleep ms="10"/>

=====CHA_VERTICAL_FRONT_PORCH=======
    <i2c_write addr="0x2D" count="1" radix="16">3A 01</i2c_write> <sleep ms="10"/>

=====DP_18BPP_EN =======
  <i2c_write addr="0x2D" count="1" radix="16">5B 01 </i2c_write> <sleep ms="100"/>

=====COLOR BAR =======
    <i2c_write addr="0x2D" count="1" radix="16">3C 10</i2c_write> <sleep ms="100"/>

======enhanced framing and Vstream enable======

  <i2c_write addr="0x2D" count="1" radix="16">5A 0C </i2c_write> <sleep ms="100"/>

======DUMP CFR======
    <i2c_write addr="0x2D" count="0" radix="16">20</i2c_write> <sleep ms="10"/>

======Read======
    <i2c_read addr="0x2D" count="32" radix="16">00</i2c_read> <sleep ms="10"/>



</aardvark>

    Thanks

    David

  • +1 in reply to David (ASIC) Liu
    Prodigy 110 points

    Hello David,

    Thanks for your fast responds. With this script it works fine.

    Thank you very much.