Audio Infoframe Registers; Table 26: Audio Infoframe Registers - Analog Devices ADV7850 Hardware Manual

InfoFrame
Map Address
0x13
0x14
0x15
0x16
0x17
0x18
0x19
0x1A
0x1B
1 As defined by the EIA/CEA-861D specifications
The AVI InfoFrame registers are considered valid if the following two conditions are met:
• avi_info_raw is set to 1.
• avi_inf_cks_err_raw

Audio InfoFrame Registers

7.34.5
Table 26 provides the list of readback registers available for the Audio InfoFrame. Refer to the EIA/CEA-861D specifications for a detailed
explanation of the Audio InfoFrame fields.
InfoFrame
Map Address
0xE3
0xE4
0xE5
0x1C
0x1D
0x1E
0x1F
0x20
0x21
0x22
0x23
0x24
0x25
0x26
0x27
0x28
0x29
As defined by the EIA/CEA-861D specifications
1
The audio InfoFrame registers are considered valid if the following two conditions are met:
•
audio_info_raw is set to 1.
• aud_inf_cks_err_raw
audio_info_raw, IO, Address 0x60[1] (Read Only)
This readback indicates the raw status of the audio InfoFrame detected signal. This bit resets to 0 on the fourth VSync leading edge
following an audio InfoFrame, after an HDMI packet detection reset or upon writing to aud_packet_id.
Function
audio_info_raw
0 
1
Rev. A May 2012
Access Type Register Name
R avi_inf_pb_0_20
R avi_inf_pb_0_21
R avi_inf_pb_0_22
R avi_inf_pb_0_23
R avi_inf_pb_0_24
R avi_inf_pb_0_25
R avi_inf_pb_0_26
R avi_inf_pb_0_27
R avi_inf_pb_0_28
is set to 0. This condition applies only if

Table 26: Audio InfoFrame Registers

Access Register Name
Type
R/W aud_packet_id[7:0]
R aud_inf_vers
R aud_inf_len
R aud_inf_pb_0_1
R aud_inf_pb_0_2
R aud_inf_pb_0_3
R aud_inf_pb_0_4
R aud_inf_pb_0_5
R aud_inf_pb_0_6
R aud_inf_pb_0_7
R aud_inf_pb_0_8
R aud_inf_pb_0_9
R aud_inf_pb_0_10
R aud_inf_pb_0_11
R aud_inf_pb_0_12
R aud_inf_pb_0_13
R aud_inf_pb_0_14
is set to 0. This condition applies only if
Description
No AVI InfoFrame received within last three VSyncs or since last HDMI packet detection reset
Audio InfoFrame received within last three VSync
Byte Name
Data Byte 19
Data Byte 20
Data Byte 21
Data Byte 22
Data Byte 23
Data Byte 24
Data Byte 25
Data Byte 26
Data Byte 27
always_store_inf is set to 1.
Byte Name
Packet Type Value
InfoFrame version number
InfoFrame length
Checksum
Data Byte 1
Data Byte 2
Data Byte 3
Data Byte 4
Data Byte 5
Data Byte 6
Data Byte 7
Data Byte 8
Data Byte 9
Data Byte 10
Data Byte 11
Data Byte 12
Data Byte 13
always_store_inf is set to 1.
203
1
1
ADV7850