ST STM32L4+ Series Reference Manual page 1079

RM0432 True random number generator (RNG) applied to STM32L4P5xx and STM32L4Q5xx only
33.3 RNG functional description
33.3.1 RNG block diagram
Figure 249
rng_it
rng_hclk
rng_clk
33.3.2 RNG internal signals
Table 221
at the STM32 product level (on pads).
Signal name
shows the RNG block diagram.
Figure 249. RNG block diagram
Banked Registers
control
data
AHB
status
interface
AHB clock domain
RNG clock domain
describes a list of useful-to-know internal signals available at the RNG level, not
Table 221. RNG internal input/output signals
Signal type
rng_it Digital output
rng_hclk Digital input
rng_clk Digital input
CONDRST
RNG_CR
RNG_DR
RNG_SR
Fault detection
Clock checker
Health tests
en_osc
RNG global interrupt request
AHB clock
RNG dedicated clock, asynchronous to rng_hclk
RM0432 Rev 6
True RNG
Conditioning logic
1-bit
Post-processing (optional)
Sampling (x N) + XOR
Analog Analog Analog
...
noise noise noise
source 1 source 2 source N
Analog noise source
Description
MSv42098V2
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