Monitoring Change Of Audio Sampling Frequency; Packets And Infoframes Registers - Analog Devices ADV7850 Hardware Manual

cs_copyright_manual and
cs_copyright_manual, Addr 68 (HDMI), Address 0x50[1]
This control is used to select an automatic or manual setting of the copyright value of the channel status bit that is passed to the SPDIF
output. Manual control is set with the cs_copyright_value bit.
Function
cs_copyright_manual
0 
1
cs_copyright_value, Addr 68 (HDMI), Address 0x50[0]
This control is used to set the CS copyright value when in manual configuration of the CS copyright bit that is passed to the SPDIF
output.
Function
cs_copyright_value
0 
1

Monitoring Change of Audio Sampling Frequency

7.33.8
The ADV7850 features the new_samp_rt_raw control to monitor changes in the audio sampling frequency field of the channel status bits.
new_samp_rt_raw, IO, Address 0x83[3] (Read Only)
This readback indicates the status of the new sampling rate interrupt signal. When set to 1, it indicates that the audio sampling
frequency field in the channel status data has changed. Once set, this bit remains high until it is cleared via new_samp_rt_clr.
Function
new_samp_rt_raw
0 
1
Important:
new_samp_rt_raw
an invalid audio sampling frequency readback in the channel status bits, and vice versa.

7.34 PACKETS AND INFOFRAMES REGISTERS

In HDMI, auxiliary data is carried across the digital link using a series of packets. The ADV7850 automatically detects and stores the
following HDMI packets:
•
InfoFrames
• Audio Content Protection (ACP)
•
International Standard Recording Code (ISRC)
• Gamut Metadata
When the ADV7850 receives one of these packets, it computes the packet checksum and compares it with the checksum available in the
packet. If these checksums are the same, the packets are stored in the corresponding registers. If the checksums are not the same, the
packets are discarded. Refer to the EIA/CEA-861D specifications for more information on the packets fields.
Rev. A May 2012
cs_copyright_value controls.
Description
Automatic CS copyright control
Manual CS copyright control
Description
Copyright value of channel status bit is 0. Valid only if cs_copyright_manual is set to 1.
Copyright value of channel status bit is 1. Valid only if cs_copyright_manual is set to 1.
Description
Sampling rate bits of the channel status data on audio channel 0 not changed
Sampling rate bits of the channel status data on audio channel 0 changed
does not trigger if cs_data_valid_raw is set to 0. This prevents the notification of a change from a valid to
200
ADV7850