Mclkout Setting; Audio Channel Mode - Analog Devices ADV7850 Hardware Manual

Function
ovr_mux_hbr
0 
1
mux_hbr_out, Addr 68 (HDMI), Address 0x01[1]
This control is used to manually select the audio output interface for HBR data. It is valid when ovr_mux_hbr is set to 1.
Function
mux_hbr_out
0 
1

7.29 MCLKOUT SETTING

The audio master clock MCLKOUT is set using the mclk_fs_n[2:0] register, as shown in
mclk_fs_n[2:0], Addr 4C (DPLL), Address 0xB5[2:0]
This control is used to select the multiple of 128 fs to be used for MCLK out.
Function
mclk_fs_n[2:0]
000
001 <<
010
011
100
101
110
111

7.30 AUDIO CHANNEL MODE

audio_ch_md_raw indicates if 2-channel audio data or multi-channel audio data is received.
audio_ch_md_raw, IO, Address 0x65[4] (Read Only)
This readback indicates the raw status signal indicating the layout value of the audio packets that were last received.
Function
audio_ch_md_raw
0 
1
Note: audio_ch_md_raw is valid for audio sample packets and DSD packets.
Rev. A May 2012
Description
Automatic HBR output control
Manual HBR output control
Description
Override by outputting I2S data
Override by outputting SPDIF data
=
MCLKOUT (
Equation 5: Relationship Between MCLKOUT, MCLKFS_N, and f
Description
128 fs
256 fs
384 fs
512 fs
640 fs
768 fs
Not valid
Not valid
Description
Last audio packets received have layout value of 1 (e.g. Layout-1 corresponds to 2-channel
audio when audio sample packets are received)
Last audio packets received have layout value of 0 (e.g. Layout-0 corresponds to 8-channel
audio when audio sample packets are received)
Equation
+ × ×
MCLKFS _ N ) 1 128
191
5.
f
s
s
ADV7850