Gamut Metadata; Table 90: Mpeg Infoframe Configuration Registers - Analog Devices ADV7850 Hardware Manual

Tx Packet Memory
Map Address
0x20
0x21
0x22
0x23
0x24
0x25
0x26
0x27
0x28
0x29
0x2A
0x2B
0x2C
0x2D
0x2E
0x2F
0x30
0x31
0x32
0x33
0x34
0x35
0x36
0x37
0x38
0x39
0x3A
0x3B
0x3C
0x3D
0x3E
1 As defined in the latest CEA 861 specification

Gamut Metadata

13.11.7
The gamut metadata packet (GMP) contains the gamut boundary description of the source. It is defined in the latest HDMI specification.
The contents of the GMP can be set via the Packet Map registers listed in
downstream sink by setting gm_pkt_en. When the transmission of GMP is enabled, the ADV7850 transmits a GMP once every two video
fields.
The ADV7850 transmits the GMP data starting 400 pixel clock cycles after the leading edge of VSync. In order to avoid corrupting the
GMP data during transmission, it is recommended that the user synchronizes all I
512 pixel clock cycles after the VSync leading edge. The VSync interrupt of the ADV7850 should be used to synchronize this timing.
Figure 124 illustrates this timing requirement.
gm_pkt_en, Addr B8 (Main), Address 0x40[2]
This control is used to enable a gamut metadata packet.
Rev. A May 2012

Table 90: MPEG InfoFrame Configuration Registers

Access Type Field Name
R/W mpeg_hb0[7:0]
R/W mpeg_hb1[7:0]
R/W mpeg_hb2[7:0]
R/W mpeg_pb0[7:0]
R/W mpeg_pb1[7:0]
R/W mpeg_pb2[7:0]
R/W mpeg_pb3[7:0]
R/W mpeg_pb4[7:0]
R/W mpeg_pb5[7:0]
R/W mpeg_pb6[7:0]
R/W mpeg_pb7[7:0]
R/W mpeg_pb8[7:0]
R/W mpeg_pb9[7:0]
R/W mpeg_pb10[7:0]
R/W mpeg_pb11[7:0]
R/W mpeg_pb12[7:0]
R/W mpeg_pb13[7:0]
R/W mpeg_pb14[7:0]
R/W mpeg_pb15[7:0]
R/W mpeg_pb16[7:0]
R/W mpeg_pb17[7:0]
R/W mpeg_pb18[7:0]
R/W mpeg_pb19[7:0]
R/W mpeg_pb20[7:0]
R/W mpeg_pb21[7:0]
R/W mpeg_pb22[7:0]
R/W mpeg_pb23[7:0]
R/W mpeg_pb24[7:0]
R/W mpeg_pb25[7:0]
R/W mpeg_pb26[7:0]
R/W mpeg_pb27[7:0]
Default Value
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
0b00000000
Table 91. The user can enable the transmission of GMP to the
C writes to the GMP registers so that the write begins
2
360
ADV7850
Byte Name1
MPEG Header Byte 0
MPEG Header Byte 1
MPEG Header Byte 2
MPEG Data Byte 0
MPEG Data Byte 1
MPEG Data Byte 2
MPEG Data Byte 3
MPEG Data Byte 4
MPEG Data Byte 5
MPEG Data Byte 6
MPEG Data Byte 7
MPEG Data Byte 8
MPEG Data Byte 9
MPEG Data Byte 10
MPEG Data Byte 11
MPEG Data Byte 12
MPEG Data Byte 13
MPEG Data Byte 14
MPEG Data Byte 15
MPEG Data Byte 16
MPEG Data Byte 17
MPEG Data Byte 18
MPEG Data Byte 19
MPEG Data Byte 20
MPEG Data Byte 21
MPEG Data Byte 22
MPEG Data Byte 23
MPEG Data Byte 24
MPEG Data Byte 25
MPEG Data Byte 26
MPEG Data Byte 27