Channel Status; Validity Status Flag - Analog Devices ADV7850 Hardware Manual

Function
change_n_raw
0 
1
cts_pass_thrsh_raw, IO, Address 0x7E[4] (Read Only)
This readback indicates the status of the ACR CTS value exceed threshold interrupt signal. When set to 1, it indicates the CTS value of
the ACR packets has exceeded the threshold set by cts_change_threshold. Once set, this bit remains high until it is cleared.
Function
cts_pass_thrsh_raw
0 
1
cts_change_threshold[5:0], Addr 68 (HDMI), Address 0x10[5:0]
This control is used to set the tolerance for change in the CTS value. This tolerance is used for the audio mute mask, mt_msk_new_cts;
the HDMI status bit, cts_pass_thrsh_raw; and the HDMI interrupt status bit, cts_pass_thrsh_st. It controls the amounts of LSBs that the
CTS can change before an audio mute, status change or interrupt is triggered.
Function
cts_change_threshold[5
:0]
100101 
xxxxxx

7.33 CHANNEL STATUS

Channel status bits are extracted from the HDMI audio packets of the 1
channel_status_data_x of the HDMI Map (where x is 1, 2, 3, 4 and 5).

Validity Status Flag

7.33.1
The channel status readback described in
algorithm that can be implemented to monitor the read valid channel status bit using cs_data_valid_raw.
cs_data_valid_raw, IO, Address 0x65[7] (Read Only)
This readback indicates the raw status signal of the channel status data valid signal.
Function
cs_data_valid_raw
0 
1
Rev. A May 2012
Description
Audio clock regeneration N value not changed
Audio clock regeneration N value changed
Description
Audio clock regeneration CTS value not passed threshold
Audio clock regeneration CTS value changed more than threshold
Description
Default tolerance of CTS value for cts_pass_thrsh_raw and mt_msk_new_cts
Tolerance of CTS value for cts_pass_thrsh_raw and mt_msk_new_cts
Section 7.33 should be considered valid if
Description
Channel status data not valid
Channel status data valid
audio channel (that is, channel 0) and stored in registers
st
cs_data_valid_raw
196
ADV7850
is set to 1. Figure 73 shows the