Регистры Allwinner H616
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AC_DAC_DRC_HKE
8.4.5. DAC DRC Expander Slope High Setting Register - адрес: 0x5096174 (смещение: 0x0174)

Аудиокодек: список регистров

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

  Unused

Bits 31 : 14

  SLOPE_EXPANDER

Bits 13 : 0
R/W
0x0500

The slope of the expander, which is determined by the equation that Ke = 1/R,

there, R is the ratio of the expander, which always is interger and the ke must
larger than 50. The format is 8.24. (The default value is <1:5>)

Команда U-Boot для чтения регистра

md 5096174 1

Bit fields structure 

typedef union  ac_dac_drc_hke
{
  struct
  {
   unsigned slope_expander : 14;
   unsigned unused0 : 18;
  } b;
   unsigned long w;
} AC_DAC_DRC_HKE
Allwinner H616 Manual