24.9.17 Tamper Control B

Table 24-53. Register Bit Attribute Legend
Symbol Description Symbol Description Symbol Description
R Readable bit HC Cleared by Hardware (Grey cell) Unimplemented
W Writable bit HS Set by Hardware X Bit is unknown at Reset
K Write to clear S Software 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.
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