Регистры Allwinner H616
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TVE_114_REG
7.2.5. TV Encoder Burst Width Register - адрес: 0x6520114 0x6524114 (смещение: 0x0114)

ТВ-кодер: список регистров

  BACK_PORCH

Bits 31 : 24
R/W
0x0

Breezeway like in HD mode VSync 720p mode, is 220 2080i/p mode is 88(default)

  Unused

Bit 23

  BREEZEWAY

Bits 22 : 16
R/W
0x16

Must be even.
Specify the width of the breezeway in encoder clock cycles.
5 bit unsigned integer.
Allowed range is 0 to 31.
In 1080i mode, is 44
In 1080p mode, is 44
In 720p mode,is 40

  Unused

Bit 15

  BURST_WIDTH

Bits 14 : 8
R/W
0x44

Specify the width of the color frequency burst in encoder clock cycles.
7 bit unsigned integer. Allowed range is 0 to 127.
In hd mode, ignored

  HSYNC_WIDTH

Bits 7 : 0
R/W
0x7e

Specify the width of the horizontal sync pulse in encoder clock cycles.

Min value is 16. Max value is (FrontPorch + ActiveLine - BackPorch).
Default value is 126.
The sum of HSyncSize and BackPorch is restricted to be divisible by 4.
In 720p mode, is 40
In 1080i/p mode, is 44

Команда U-Boot для чтения регистра

md 6520114 1
md 6524114 1

Bit fields structure 

typedef union  tve_114_reg
{
  struct
  {
   unsigned hsync_width : 8;
   unsigned burst_width : 7;
   unsigned unused0 : 1;
   unsigned breezeway : 7;
   unsigned unused1 : 1;
   unsigned back_porch : 8;
  } b;
   unsigned long w;
} TVE_114_REG
Allwinner H616 Manual