36.8.10 Initialization Vector Register

Name: INTVECTV
Offset: 0x3C + n*0x04 [n=0..3]
Reset: 0x00000000
Property: PAC Write-Protection

Bit 3130292827262524 
 INTVECTV[31:24] 
Access WWWWWWWW 
Reset 00000000 
Bit 2322212019181716 
 INTVECTV[23:16] 
Access WWWWWWWW 
Reset 00000000 
Bit 15141312111098 
 INTVECTV[15:8] 
Access WWWWWWWW 
Reset 00000000 
Bit 76543210 
 INTVECTV[7:0] 
Access WWWWWWWW 
Reset 00000000 

Bits 31:0 – INTVECTV[31:0] Initialization Vector Value

The four 32-bit Initialization Vector registers INTVECTVn set the 128-bit Initialization Vector data block that is used by some modes of operation as an additional initial input. INTVECTV0.INTVECTV corresponds to the first word of the Initialization Vector, INTVECTV3.INTVECTV to the last one. These registers are write-only to prevent the Initialization Vector from being read by another application. For CBC, OFB, and CFB modes, the Initialization Vector corresponds to the initialization vector. For CTR mode, it corresponds to the counter value.