Audio Power Up/Down Controls - Analog Devices ADV7850 Hardware Manual

11.4

AUDIO POWER UP/DOWN CONTROLS

The audio Codec includes power up and power down controls.
eng_dig_pu, Addr 5C (audio_codec), Address 0x01[3]
This control is used to power up the digital engine.
Function
eng_dig_pu
0 
1
pll_pu, Addr 5C (audio_codec), Address 0x01[2]
This control is used to power up PLL.
Function
pll_pu
0 
1
ref_buf_pu, Addr 5C (audio_codec), Address 0x01[1]
This control is used to power up the reference buffer.
Function
ref_buf_pu
0 
1
left_dac_1_pu, Addr 5C (audio_codec), Address 0x02[0]
This control is used to power up the DAC left channel.
Function
left_dac_1_pu
0 
1
right_dac_1_pu, Addr 5C (audio_codec), Address 0x02[1]
This control is used to power up the DAC right channel.
Function
right_dac_1_pu
0 
1
The stereo DAC output can be put into standby mode using dac_ana_stdby_dis. The individual left and right DAC outputs can also be put
into standby mode using left_dac_1_ana_stdby
dac_ana_stdby_dis, Addr 5C (audio_codec), Address 0x01[0]
This control is used to disable DAC analog standby.
Rev. A May 2012
Description
Power down digital engine
Power up digital engine
Description
Power down PLL
Power up PLL
Description
Power down reference buffer
Power up reference buffer
Description
Power down DAC left channel
Power up DAC left channel
Description
Power down DAC right channel
Power up DAC right channel
and right_dac_1_ana_stdby.
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ADV7850