Регистры Allwinner H616
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TVE_DAC_CFG0
7.2.5. TV Encoder DAC CFG0 Register - адрес: 0x6520028 0x6524028 (смещение: 0x0028)

ТВ-кодер: список регистров

  DAC_CLOCK_INVERT

Bit 31
R/W
0x1

0: Not invert
1: Invert

  Unused

Bits 30 : 26

  CALI_IN

Bits 25 : 16
R/W
0x0

  LOW_BIAS

Bits 15 : 12
R/W
0x4

500uA to 4mA

  Unused

Bits 11 : 10

  BIAS_EXT_SEL

Bit 9
R/W
0x1

0: disable
1: enable
(A_SEL_BIAS_ADDA)

  BIAS_INT_SEL

Bit 8
R/W
0x0

0: disable
1: enable
(A_SEL_BIAS_RES)

  Unused

Bits 7 : 5

  BIAS_REF_INT_EN

Bit 4
R/W
0x0

0: disable
1: enable
(A_EN_RESREF)

  Unused

Bits 3 : 1

  DAC_EN

Bit 0
R/W
0x0

0: Disable
1: Enable

Команда U-Boot для чтения регистра

md 6520028 1
md 6524028 1

Bit fields structure 

typedef union  tve_dac_cfg0
{
  struct
  {
   unsigned dac_en : 1;
   unsigned unused0 : 3;
   unsigned bias_ref_int_en : 1;
   unsigned unused1 : 3;
   unsigned bias_int_sel : 1;
   unsigned bias_ext_sel : 1;
   unsigned unused2 : 2;
   unsigned low_bias : 4;
   unsigned cali_in : 10;
   unsigned unused3 : 5;
   unsigned dac_clock_invert : 1;
  } b;
   unsigned long w;
} TVE_DAC_CFG0
Allwinner H616 Manual