stm32 /stm32h7rs /STM32H7R /RCC /RCC_PLL3DIVR2

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Interpret as RCC_PLL3DIVR2

31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 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 (B_0x0)DIVS0 (B_0x0)DIVT

DIVT=B_0x0, DIVS=B_0x0

Description

RCC PLL3 dividers configuration register 2

Fields

DIVS

PLL3 DIVS division factor Set and reset by software to control the frequency of the pll3_s_ck clock. This post-divider performs divisions with 50% duty-cycle. The duty-cycle of 50% is guaranteed only in the following conditions: With VCOL, if (DIVS+1) is even, With VCOH, for all DIVS values These bits can be written only when the PLL3DIVSEN = 0.

0 (B_0x0): pll3_s_ck = vco3_ck

1 (B_0x1): pll3_s_ck = vco3_ck / 2 (default after reset)

2 (B_0x2): pll3_s_ck = vco3_ck / 3

3 (B_0x3): pll3_s_ck = vco3_ck / 4

4 (B_0x4): pll3_s_ck = vco3_ck / 5

5 (B_0x5): pll3_s_ck = vco3_ck / 6

6 (B_0x6): pll3_s_ck = vco3_ck / 7

7 (B_0x7): pll3_s_ck = vco3_ck / 8

DIVT

PLL3 DIVT division factor Set and reset by software to control the frequency of the pll3_t_ck clock. This post-divider performs divisions with 50% duty-cycle. The duty-cycle of 50% is guaranteed only in the following conditions: With VCOL, if (DIVT+1) is even, With VCOH, for all DIVT values These bits can be written only when the PLL3DIVTEN = 0.

0 (B_0x0): pll3_t_ck = vco3_ck

1 (B_0x1): pll3_t_ck = vco3_ck / 2 (default after reset)

2 (B_0x2): pll3_t_ck = vco3_ck / 3

3 (B_0x3): pll3_t_ck = vco3_ck / 4

4 (B_0x4): pll3_t_ck = vco3_ck / 5

5 (B_0x5): pll3_t_ck = vco3_ck / 6

6 (B_0x6): pll3_t_ck = vco3_ck / 7

7 (B_0x7): pll3_t_ck = vco3_ck / 8

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