DDC264: DDC264 Read data via SPI

Tool/software:

Hello, I am trying to receive data from DDC264 to STM32 MCU

I established protocol according to the manual in the attached picture you can see the image from the oscilloscope 

But I didn't receive any meaningful data it is just a random values. 

Reset pin from DDC264 connected to 3.3V

For "CLK" from DDC264  established frequency -   2MHz 

I didn't write any registers to DDC264 I just want to read data from DDC264 with factory settings. 

So how work now 

1. Detect when "DVALID" moves from 1 to 0 
2.  Start reading 128 bytes via SPI 
3. Toggle "CONV"
   
   the script looks like that 
   

   HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_1);  // for CLK
   
   
     while (1)
     {
   	 
      	 	 if (HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_6) == GPIO_PIN_RESET)  // detect 
      	 	            {
   
      	 		        HAL_SPI_TransmitReceive(&hspi2,(uint8_t*)&test_64,&received_Byte_64,128,0x100);
   
      	 		        data_bytes[1] =	received_Byte_64[127];
      	 		        data_bytes[0] =	received_Byte_64[126];
      	 		        dataPacket = (data_bytes[0] << 8) | data_bytes[1];
     	 		        send_data_by_uart(dataPacket);  // only send firts channel 
   
      	 		        HAL_GPIO_TogglePin(GPIOK, GPIO_PIN_1);  // Toggle CONV  
      	 	            }
   
        }

Can you tell me where the error might be?

Regards, Ildar