8.9.6.7 TRNG Interrupt Status Register

Name: TRNG_ISR
Offset: 0x1C
Reset: 0x00000000
Property: Read-only

Bit 3130292827262524 
          
Access  
Reset  
Bit 2322212019181716 
          
Access  
Reset  
Bit 15141312111098 
          
Access  
Reset  
Bit 76543210 
    APHTRCHTEOTPKBSECEDATRDY 
Access RRRRR 
Reset 00000 

Bit 4 – APHT Adaptive Proportional Health Test Failure Detection (cleared on read)

ValueDescription
0 No loss of entropy detected in the TRNG noise source since the last read of the Interrupt Status register.
1 A significant loss of entropy has been detected in the TRNG noise source since the last read of the Interrupt Status register.

Bit 3 – RCHT Repetitive Count Health Test Failure Detection (cleared on read)

ValueDescription
0 No important failure detected in the TRNG noise source since the last read of the Interrupt Status register.
1 An important failure has been detected in the TRNG noise source since the last read of the Interrupt Status register.

Bit 2 – EOTPKB End Of Transfer on Private Key Bus (cleared on read)

ValueDescription
0 No private key bus transfer has ended since the last read of the Interrupt Status Register.
1 The private key bus transfer has ended.

Bit 1 – SECE Security and/or Safety Event (cleared on read)

ValueDescription
0 No safety or security event occurred since the last read of the Interrupt Status Register.
1 One or more safety or security event occurred since the last read of TRNG_ISR. For details on the event, see TRNG Write Protection Status Register.

Bit 0 – DATRDY Data Ready (cleared on read or when TRNG_ODATA is read)

ValueDescription
0 Output data is not valid or TRNG is disabled.
1 New random value has been completed since the last read of TRNG_ISR or TRNG_ODATA.