Rcc Register Map; Table 21. Rcc Register Map And Reset Values - ST STM32F446 Series Reference Manual

Reset and clock control (RCC)
6.3.28

RCC register map

Table 21
Addr. Register
offset name
RCC_CR
0x00
Reset value
RCC_PLL
CFGR
0x04
Reset value
MCO
RCC_CFGR 2
0x08
[1:0]
Reset value 0
RCC_CIR
0x0C
Reset value
RCC_AHB1
RSTR
0x10
Reset value
RCC_AHB2
RSTR
0x14
Reset value
RCC_AHB3
RSTR
0x18
Reset value
Reserved
0x1C
Reset value
RCC_APB1
RSTR
0x20
Reset value
172/1328
gives the register map and reset values.

Table 21. RCC register map and reset values

0 0 0 0 0 0
PLLR
PLLQ[3:0]
[2:0]
0 1 0 0 1 0 0
MCO2 MCO1
PRE PRE
[2:0] [2:0]
0 0 0 0 0 0 0
0
0
0 0 0 0 0 0 0
0 0 0 0 x
PLLP
[1:0]
0 0 0
MCO
PPRE2
1 RTCPRE[4:0]
[2:0]
[1:0]
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0
0 0 0 0 0 0 0 0
RM0390 Rev 4
HSICAL[7:0] HSITRIM[4:0]
x x x x x x x 1
PLLN[8:0]
0 1 1 0 0 0 0 0
PPRE1
HPRE[3:0]
[2:0]
0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0
0
0 0 0 0
RM0390
0 0 0 0 1 1
PLLM[5:0]
0 0 1 0 0 0 0
SWS SW
[1:0] [1:0]
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0
0 0
0 0 0 0 0 0 0