Analog Devices Advantiv ADV7611 Hardware User's Manual page 60

UG-180
NOT_AUTO_UNMUTE , Addr 68 (HDMI), Address 0x1A[0]
A control to disable the auto unmute feature. When set to 1, audio can be unmuted manually if all mute conditions are inactive by setting
NOT_AUTO_UNMUTE to 0 and then back to 1.
Function
NOT_AUTO_UNMUTE Description
0 (default) Audio unmutes following a delay set by WAIT_UNMUTE after all mute conditions have become inactive
1 Prevents audio from unmuting automatically
WAIT_UNMUTE[2:0] , Addr 68 (HDMI), Address 0x1A[3:1]
A control to delay audio unmute. Once all mute conditions are inactive WAIT_UNMUTE[2:0] can specify a further delay time before
unmuting. NOT_AUTO_UNMUTE must be set to 0 for this control to be effective.
Function
WAIT_UNMUTE[2:0] Description
000 (default) Disables/cancels delayed unmute. Audio unmutes directly after all mute conditions become inactive.
001 Unmutes 250 ms after all mute conditions become inactive.
010 Unmutes 500 ms after all mute conditions become inactive.
011 Unmutes 750 ms after all mute conditions become inactive.
100 Unmutes 1 sec after all mute conditions become inactive.
Table 13. Selectable Mute Conditions
Bit Name
MT_MSK_COMPRS_AUD
MT_MSK_AUD_MODE_CHNG
MT_MSK_PARITY_ERR
MT_MSK_VCLK_CHNG
MT_MSK_APLL_UNLOCK
MT_MSK_VPLL_UNLOCK
MT_MSK_ACR_NOT_DET
MT_MSK_FLATLINE_DET
MT_MSK_FIFO_UNDERFLOW
MT_MSK_FIFO_OVERFLOW
MT_MSK_AVMUTE
MT_MSK_NOT_HDMIMODE
MT_MSK_NEW_CTS
MT_MSK_NEW_N
MT_MSK_CHMODE_CHNG
MT_MSK_APCKT_ECC_ERR
MT_MSK_CHNG_PORT
MT_MSK_VCLK_DET
HDMI Map
Address Description
0x14[5] Causes audio mute if audio is compressed
0x14[4] Causes audio mute if audio mode changes between
PCM, DSD, DST, or HBR formats
0x14[1] Causes audio mute if parity bits in audio samples are
not correct
0x14[0] Causes audio mute if TMDS clock has irregular/missing
pulses
0x15[7] Causes audio mute if audio PLL unlocks
0x15[6] Causes audio mute if TMDS PLL unlocks
0x15[5] Causes audio mute if ACR packets are not received
within one VSync
0x15[3] Causes audio mute if flatline bit in audio packets is set
0x15[1] Causes audio mute if audio FIFO underflows
0x15[0] Causes audio mute if audio FIFO overflows
0x16[7]
Causes audio mute if AVMute is set in the general
control packet
0x16[6] Causes audio mute if HDMI_MODE bit goes low
0x16[5] Causes audio mute if CTS changes by more than the
threshold set in
0x16[4] Causes audio mute if N changes
0x16[3] Causes audio mute if the channel mode changes from
stereo to multichannel, or vice versa
0x16[2] Causes audio mute if uncorrectable error is detected in
the audio packets by the ECC block
0x16[1] Causes audio mute if HDMI port is changed
0x16[0] Causes audio mute if TMDS clock is not detected
Rev. A | Page 60 of 184
CTS_CHANGE_THRESHOLD[5:0]
Hardware User Guide
Corresponding Status
Register(s)
CS_DATA[1]
AUDIO_SAMPLE_PCKT_DET
PARITY_ERROR_RAW
VCLK_CHNG_RAW
AUDIO_PLL_LOCKED
TMDS_PLL_LOCKED
AUDIO_C_PCKT_RAW
AUDIO_FLT_LINE_RAW
FIFO_UNDERFLO_RAW
FIFO_OVERFLO_RAW
AV_MUTE_RAW
HDMI_MODE
CTS_PASS_THRSH_RAW
CHANGE_N_RAW
AUDIO_MODE_CHNG_RAW
AUDIO_PCKT_ERR_RAW
HDMI_PORT_SELECT[2:0]
TMDS_CLK_A_RAW