SEIS=B_0x0, SECS=B_0x0, CECS=B_0x0, DRDY=B_0x0, CEIS=B_0x0
RNG status register
| DRDY | Data ready Once the output buffer becomes empty (after reading the RNG_DR register), this bit returns to 0 until a new random value is generated. Note: The DRDY bit can rise when the peripheral is disabled (RNGEN1=10 in the RNG_CR register). If IE=1 in the RNG_CR register, an interrupt is generated when DRDY1=11. 0 (B_0x0): The RNG_DR register is not yet valid, no random data is available. 1 (B_0x1): The RNG_DR register contains valid random data. |
| CECS | Clock error current status Note: CECS bit is valid only if the CED bit in the RNG_CR register is set to 0. 0 (B_0x0): The RNG clock is correct (fRNGCLK> fHCLK/32). If the CEIS bit is set, this means that a slow clock was detected and the situation has been recovered. 1 (B_0x1): The RNG clock is too slow (fRNGCLK< fHCLK/32). |
| SECS | Seed error current status Runtime repetition count test failed (noise source has provided more than 24 consecutive bits at a constant value 0 or 1, or more than 32 consecutive occurrence of two bits patterns 01 or 10) Startup or continuous adaptive proportion test on noise source failed. Startup post-processing/conditioning sanity check failed. 0 (B_0x0): No faulty sequence has currently been detected. If the SEIS bit is set, this means that a faulty sequence was detected and the situation has been recovered. 1 (B_0x1): At least one of the following faulty sequences has been detected: |
| CEIS | Clock error interrupt status This bit is set at the same time as CECS. It is cleared by writing 0. Writing 1 has no effect. An interrupt is pending if IE = 1 in the RNG_CR register. 0 (B_0x0): The RNG clock is correct (fRNGCLK> fHCLK/32) 1 (B_0x1): The RNG clock before the internal divider is detected too slow (fRNGCLK< fHCLK/32) |
| SEIS | Seed error interrupt status This bit is set at the same time as SECS. It is cleared by writing 0 (unless CONDRST is used). Writing 1 has no effect. An interrupt is pending if IE = 1 in the RNG_CR register. 0 (B_0x0): No faulty sequence detected 1 (B_0x1): At least one faulty sequence is detected. See SECS bit description for details. |