Get Frames from ADNS-9800

Projects Programming
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So I have fixed my code for reading Motion Register's byte 0:

# define REG_Motion                               0x02
    # define REG_Pixel_Burst                          0x64
    # define REG_Frame_Capture                        0x12
    ...................
    void setup()
    {
        //Initialization (Uploading Firmware and First two steps from Procedure of Frame Capture)
        ....
    }
    void loop()
    {
      adns_write_reg(REG_Frame_Capture, 0x93);
      delay(1);
      adns_write_reg(REG_Frame_Capture, 0xc5);
      delay(2);
      byte check_Motion_register = adns_read_reg(REG_Motion);
      check_Motion_register |= B00000001;      

      //Display Motion Register in serial monitor
      Serial.println(check_Motion_register);
      
      if(check_Motion_register == 1)
      {
         for(int i = 1; i <= 900; i++)
         {
              Serial.println(adns_read_reg(REG_Pixel_Burst));
              delay(1);
         }
      }
      
      delay(100);
    }

But I have one problem. In Serial Monitor Pixel_Burst register return's all pixels as zeros. Datasheet says this:

  1. Continue read from Pixel_Burst register until all 900 pixels are transferred.

and In code I'm using this:

if(check_Motion_register == 1)
      {
         for(int i = 1; i <= 900; i++)
         {
              Serial.println(adns_read_reg(REG_Pixel_Burst));
              delay(1);
         }
}

what am I doing wrong? How to fix this?