24.7.16 Tamper Control B

Table 24-19. Register Bit Attribute Legend
SymbolDescriptionSymbolDescriptionSymbolDescription
RReadable bitHCCleared by Hardware(Grey cell)Unimplemented
WWritable bitHSSet by HardwareXBit is unknown at Reset
KWrite to clearSSoftware settable bit
Name: TAMPCTRLB
Offset: 0x6C
Reset: 0x00000000
Property: PAC Write-Protection, Enable-Protected

Bit 3130292827262524 
          
Access  
Reset  
Bit 2322212019181716 
          
Access  
Reset  
Bit 15141312111098 
          
Access  
Reset  
Bit 76543210 
 ALSI7ALSI6ALSI5ALSI4ALSI3ALSI2ALSI1ALSI0 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 00000000 

Bits 0, 1, 2, 3, 4, 5, 6, 7 – ALSIn Active Layer Internal Select n [n=0..7]

Note: Only one ALSI bit must be set to enable Active Layer Protection on the TrustRAM.
Note: The ALSI5, ALSI6, and ALSI7 bits are not available on 100 pin packages and 144 pin TFBGA, (RTC_IN[5:7] and RTC_OUT[5:7]).
ValueDescription
0

Active layer Protection is monitoring the RTC signal using INn and OUTn tamper pins

1

Active layer Protection is monitoring the RTC signal on the TrustRAM shield