New AD524R is not working

/* Copyright (c) 2013, Freja Nordsiek
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*/

/* Analog Sine Waves
   
   This example controls an Analog Devices AD56X4 Quad Channel DAC
   (Digital to Analog Converter) by SPI and writes a 10 Hz sine
   wave to each channel that are all 90 degrees out of phase. The
   outputs are updated synchronously.
   
   Author:   Freja Nordsiek
   Notes:
   History:  * 2013-08-17 Created.
*/

#include "Arduino.h"
#include "math.h"
#include <SPI.h>
#include <AD56X4.h>

// Output pin for the Slave Select SPI line of the AD56X4.

int AD56X4_SS_pin = 10;

// Define the sine wave frequencies for each channel in Hz, the
// initial phases in degrees, the offsets, and the amplitudes.

float frequencies[] = {1e1, 1e1, 1e1, 1e1};
float phases[] = {0, 90, 180, 270};
float offsets[] = {32768, 32768, 32768, 32768};
float amplitudes[] = {32600, 32600, 32600, 32600};

void setup()
{
  
  // Setup SPI. This means setting pin 10 to output (arduino must
  // be the master), the AD56X4 Slave Select pin to output, the
  // SPI clock (chip's 50 MHz is way faster than our 8 MHz max),
  // and start SPI.
  
  pinMode(10,OUTPUT);
  pinMode(AD56X4_SS_pin,OUTPUT);
  SPI.setClockDivider(SPI_CLOCK_DIV2);
  SPI.begin();
  
  // Reset the AD56X4, which will power it up and set all outputs
  // to zero.
  
  AD56X4.reset(AD56X4_SS_pin,true);
  
  
}

void loop()
{
  
  // Get the current time.
  
  float t = 1e-6 * float(micros());
  
  // Array to help in giving the library the right channel.
  
  byte channels[] = {AD56X4_CHANNEL_A, AD56X4_CHANNEL_B,
                     AD56X4_CHANNEL_C, AD56X4_CHANNEL_D};
  
  // Calculate the sine wave and put it in the input register for
  // each channel (not output by the DAC yet).
  
  for (int i = 0; i < 4; i++)
    {
      
      // Calculate the sine wave value.
      
      float y = offsets[i] + amplitudes[i]
                * sin(2.0*M_PI*(t*frequencies[i] + phases[i]/360.0));
      //y = 0xAAAA ; //I switched to something constant just in case
      // Convert to a word (unsigned int) making sure to keep it
      // in the range [0, 0xFFFF].
      
      word output = word(y);
      
      if (y > 0xFFFF)
        output = 0xFFFF;
      else if (y < 0)
        output = 0;
        
      // Write the output to the i'th channel making sure that only
      // the input register is set (not output yet).
        
      AD56X4.setChannel(AD56X4_SS_pin, AD56X4_SETMODE_INPUT,
                        channels[i], output);
      
    }
  
  // Update all the DAC registers so that the outputs of the DAC
  // are now the new sine wave values. This is synchronous.
  
  AD56X4.updateChannel(AD56X4_SS_pin, AD56X4_CHANNEL_ALL);
  
}