stm32 /stm32h5 /STM32H573 /RCC /RCC_PLL1DIVR

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Interpret as RCC_PLL1DIVR

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 0PLL1N0 (B_0x0)PLL1P0 (B_0x0)PLL1Q0 (B_0x0)PLL1R

PLL1P=B_0x0, PLL1Q=B_0x0, PLL1R=B_0x0

Description

RCC PLL1 dividers register

Fields

PLL1N

Multiplication factor for PLL1VCO Set and reset by software to control the multiplication factor of the VCO. These bits can be written only when the PLL is disabled (PLL1ON = 0 and PLL1RDY = 0). … … Others: reserved

3 (B_0x3): PLL1N = 4

4 (B_0x4): PLL1N = 5

5 (B_0x5): PLL1N = 6

128 (B_0x80): PLL1N = 129 (default after reset)

511 (B_0x1FF): PLL1N = 512

PLL1P

PLL1 DIVP division factor Set and reset by software to control the frequency of the pll1_p_ck clock. These bits can be written only when the PLL1 is disabled (PLL1ON = 0 and PLL1RDY = 0). Note that odd division factors are not allowed. …

0 (B_0x0): pll1_p_ck = vco1_ck

1 (B_0x1): pll1_p_ck = vco1_ck / 2 (default after reset)

2 (B_0x2): Not allowed

3 (B_0x3): pll1_p_ck = vco1_ck / 4

127 (B_0x7F): pll1_p_ck = vco1_ck / 128

PLL1Q

PLL1 DIVQ division factor Set and reset by software to control the frequency of the pll1_q_ck clock. These bits can be written only when the PLL1 is disabled (PLL1ON = 0 and PLL1RDY = 0). …

0 (B_0x0): pll1_q_ck = vco1_ck

1 (B_0x1): pll1_q_ck = vco1_ck / 2 (default after reset)

2 (B_0x2): pll1_q_ck = vco1_ck / 3

3 (B_0x3): pll1_q_ck = vco1_ck / 4

127 (B_0x7F): pll1_q_ck = vco1_ck / 128

PLL1R

PLL1 DIVR division factor Set and reset by software to control the frequency of the pll1_r_ck clock. These bits can be written only when the PLL1 is disabled (PLL1ON = 0 and PLL1RDY = 0). …

0 (B_0x0): pll1_r_ck = Not allowed

1 (B_0x1): pll1_r_ck = vco1_ck / 2 (default after reset)

2 (B_0x2): pll1_r_ck = vco1_ck / 3

3 (B_0x3): pll1_r_ck = vco1_ck / 4

127 (B_0x7F): pll1_r_ck = vco1_ck / 128

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