Analog Devices Advantiv ADV7611 Hardware User's Manual page 67

Hardware User Guide
Channel Status Copyright Value Assertion
It is possible to overwrite the copyright value of the channel status bit that is passed to the SPDIF output. This is done via the
CS_COPYRIGHT_MANUAL
CS_COPYRIGHT_MANUAL , Addr 68 (HDMI), Address 0x50[1]
A control to select 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 (default)
1
CS_COPYRIGHT_VALUE , Addr 68 (HDMI), Address 0x50[0]
A control 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 (default)
1
Monitoring Change of Audio Sampling Frequency
The ADV7611 features the NEW_SAMP_RT_RAW flag to monitor changes in the audio sampling frequency field of the channel status bits.
NEW_SAMP_RT_RAW , IO, Address 0x83[3] (Read Only)
Status of new sampling rate interrupt signal. When set to 1, it indicates that audio sampling frequency field in channel status data has
changed. Once set, this bit will remain high until it is cleared via NEW_SAMP_RT _CLR.
Function
NEW_SAMP_RT_RAW
0 (default)
1
Important
The NEW_SAMP_RT_RAW
valid to an invalid audio sampling frequency readback in the channel status bits, and vice versa.
PACKETS AND INFOFRAMES REGISTERS
In HDMI, auxiliary data is carried across the digital link using a series of packets. The ADV7611automatically detects and stores the
following HDMI packets:
•
InfoFrames
•
Audio content protection (ACP)
•
International standard recording code (ISRC)
•
Gamut metadata
When the ADV7611 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.
InfoFrames Registers
The ADV7611 can store the following InfoFrames:
•
Auxiliary video information (AVI) InfoFrame
•
Source production descriptor (SPD) InfoFrame
•
Audio InfoFrame
•
Moving picture expert group (MPEG) source InfoFrame
and CS_COPYRIGHT_VALUE
Description
Automatic CS copyright control.
Manual CS copyright control. Manual value is set by CS_COPYRIGHT_VALUE.
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 have not changed.
Sampling rate bits of the channel status data on audio Channel 0 have changed.
flag does not trigger if CS_DATA_VALID_RAW
controls.
is set to 0. This prevents the notification of a change from a
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