Address translation can be turned off by selecting the No Address Translation option during IP configuration. When this option is selected, one full 64-bit BAR space is given for slave data transfer. You must set up any address translation if needed. If No Address Translation is not selected DMA will do address translation.
One 64 bit BAR space is divided into 8 (called window) and 8 window space is available for address translation. Address translations can be done for address bits more than the window size. Window size = BAR size/Number of windows. (number of windows are fixed to 8). Address translation for Slave Bridge transfer are described in the following examples: