uint16_t dm9000ReadPhyReg(uint8_t address)
{
   //Write PHY register address
   dm9000WriteReg(DM9000_REG_EPAR, 0x40 | address);

   //Start the read operation
   dm9000WriteReg(DM9000_REG_EPCR, EPCR_EPOS | EPCR_ERPRR);
   //PHY access is still in progress?
   while((dm9000ReadReg(DM9000_REG_EPCR) & EPCR_ERRE) != 0)
   {
   }

   //Clear command register
   dm9000WriteReg(DM9000_REG_EPCR, EPCR_EPOS);
   //Wait 5us minimum
   usleep(5);

   //Return register value
   return (dm9000ReadReg(DM9000_REG_EPDRH) << 8) | dm9000ReadReg(DM9000_REG_EPDRL);
}
The product receives input or data, but it does
        not validate or incorrectly validates that the input has the
        properties that are required to process the data safely and
        correctly.