Регистры Allwinner H616
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TVE_120_REG
7.2.5. TV Encoder White Level Register - адрес: 0x6520120 0x6524120 (смещение: 0x0120)

ТВ-кодер: список регистров

  Unused

Bits 31 : 26

  HD_SYNC_BREEZEWAY_LEVEL

Bits 25 : 16
R/W
0x1e8

Specify the breezeway level setting.
10-bit unsigned integer.
Allowed range is from 0 to 1023.

  Unused

Bits 15 : 10

  WHITE_LEVEL

Bits 9 : 0
R/W
0x320

Specify the white level setting.
10-bit unsigned integer.
Allowed range is from black_level+1 or vbi_blank_level +1 (whichever is greater) to 1023.

Команда U-Boot для чтения регистра

md 6520120 1
md 6524120 1

Bit fields structure 

typedef union  tve_120_reg
{
  struct
  {
   unsigned white_level : 10;
   unsigned unused0 : 6;
   unsigned hd_sync_breezeway_level : 10;
   unsigned unused1 : 6;
  } b;
   unsigned long w;
} TVE_120_REG
Allwinner H616 Manual