Multiple Infoframes Support ( Thx Media Director™) - Analog Devices ADV7850 Hardware Manual

InfoFrame
Map Address
0x5F
0x60
0x61
0x62
0x63
0x64
0x65
0x66
0x67
0x68
0x69
0x6A
0x6B
0x6C
0x6D
0x6E
0x6F
The Vendor Specific InfoFrame registers are considered valid if the following two conditions are met:
• vs_info_raw is set to 1.
• vs_inf_cks_err_raw
vs_info_raw, IO, Address 0x60[4] (Read Only)
This readback indicates the raw status signal of the vendor specific InfoFrame detection signal. This bit resets to 0 after HDMI packet
detection reset or upon writing to vs_packet_id.
Function
vs_info_raw
0 
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Multiple InfoFrames Support ( THX Media Director™)
7.34.9
The ADV7850 supports the reception of multiple InfoFrame packets in a single frame and allows the user to read any of the packets. For
example, the HDMI specification defines only one Vendor Specific InfoFrame (VSI) per frame. For support of some inputs which use
THX Media Director, it is required to be able to receive three VSIs at the same time. The ADV7850 can detect the number of incoming
VSIs and select which VSI to decode, load it into the buffer, read it in the system, and then select another VSI to be decoded and loaded
into the buffer.
The ADV7850 can select up to 16 different VSIs to be decoded and loaded into the buffer. The default configuration in the ADV7850 is
to use VSIs, however this feature can be used for any of the InfoFrame packets described in Section
The ADV7850 detects how many packets of a configurable type (e.g. VSI) come in between VSync rising edges, and the user can select
with an I C control which of those count-wise they want to pick up in the single VSI data buffer for I
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can sweep through all the VSI in sequence after it is done reading one of the VSI from the single/shared data buffer.
en_pkt_cnt_sel, Addr 7C (InfoFrame), Address 0xFE[4]
This control enables the feature where the user can choose which of the multiple received packets per frame of type PKT_CNT_ID is to
be collected. This feature is only relevant for packet types that can be stored in the InfoFrame Map.
Rev. A May 2012
R/W Register Name
R vs_inf_pb_0_12
R vs_inf_pb_0_13
R vs_inf_pb_0_14
R vs_inf_pb_0_15
R vs_inf_pb_0_16
R vs_inf_pb_0_17
R vs_inf_pb_0_18
R vs_inf_pb_0_19
R vs_inf_pb_0_20
R vs_inf_pb_0_21
R vs_inf_pb_0_22
R vs_inf_pb_0_23
R vs_inf_pb_0_24
R vs_inf_pb_0_25
R vs_inf_pb_0_26
R vs_inf_pb_0_27
R vs_inf_pb_0_28
is set to 0. This condition applies only if
Description
No new vendor specific InfoFrame received since last HDMI packet detection reset
New vendor specific InfoFrame received
Byte Name
Data Byte 11
Data Byte 12
Data Byte 13
Data Byte 14
Data Byte 15
Data Byte 16
Data Byte 17
Data Byte 18
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.
206
ADV7850
7.34.1 to Section 7.34.8.
C readback. This way the system
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