Регистры Allwinner H616

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24M_27M_CLK_OUTPUT_REG
3.3.4. 24M or 27M Clock Output Regist - адрес: 0x3001f20 (смещение: 0x0F20)

Контроллер синхрогенератора: список регистров



31 ||||||||||||||||| 16
15 ||||||||||||||||| 00

  27M_CLK_OUTPUT_EN

Bit 31
R/W
0x0

27M Clock Output enable
0: Disable
1: Enable


  24M_27M_SEL

Bit 30
R/w
0x0

0:27M
1:24M
When selecting 24M, the clock is from crystal.
When selecting 27M, the clock is from PLL_CSI, if div_sel is valid, 27M clock
can be output by configuring PLL_CSI and div_sel.


  Unused

Bits 29 : 2

  DIV_SEL

Bits 1 : 0
R/W
0x0

00:Div2
01:Div4
10:Div8
11:Div16
Only for 27M clock.



Команда U-Boot для чтения регистра

md 3001f20 1



Bit fields structure

typedef union  24m_27m_clk_output_reg
{
  struct
  {
   unsigned div_sel : 2;
   unsigned unused0 : 28;
   unsigned 24m_27m_sel : 1;
   unsigned 27m_clk_output_en : 1;
  } b;
   unsigned long w;
} 24M_27M_CLK_OUTPUT_REG
   

Allwinner H616 Manual