Регистры Allwinner H616
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AC_DAC_DRC_EPSHC
8.4.5. DAC DRC Expander Smooth Time High Coef Register - адрес: 0x50961ac (смещение: 0x01AC)

Аудиокодек: список регистров

  Unused

Bits 31 : 11

  GAIN_SMOOTH_FILTER

Bits 10 : 0
R/W
0x0000

The gain smooth filter release and attack time parameter setting in expander
region, which are determined by the equation that RT = 1-exp(-2.2Ts/tr).
The format is 3.24. (The default value is 30ms)

Команда U-Boot для чтения регистра

md 50961ac 1

Bit fields structure 

typedef union  ac_dac_drc_epshc
{
  struct
  {
   unsigned gain_smooth_filter : 11;
   unsigned unused0 : 21;
  } b;
   unsigned long w;
} AC_DAC_DRC_EPSHC
Allwinner H616 Manual