AD_FROM_RAM) This selects the location from where the helper data must be read by the application. This option must be configured if XPUF_KEY_GENERATE_OPTION is configured as XPUF_REGEN_ON_DEMAND or if XPUF_GENERATE_KEK_N_ID is configured as FALSE.</p>
<p>#define XPUF_CHASH (0x00000000) CHASH value should be supplied if XPUF_READ_HD_OPTION is configured as XPUF_READ_FROM_RAM.The length of CHASH should be 24 bits This can be obtained by performing PUF registration and writing the helper data on the UART.</p>