ALC5642-VF
Datasheet
7.6.2. 4 DACs with 4-Channel Playback Path
There are four analog DACs and with up to 4-channel playback path. Two I2S interfaces provide four
channels data to analog DACs. And analog DAC can output audio signal to speaker output, headphone
output, mono output or line output.
The full scale output of analog DAC is around 1Vrms at line output port. In order to save power, the four
analog DACs can be powered down separately by setting pow_dac_l_1 (MX-61[12]), pow_dac_r_1
(MX-61[11]), pow_dac_l_2 (MX-61[7]) and pow_dac_r_2 (MX-61[6]). And the digital volume control
of the four DACs are also separately controlled by vol_dac1_l (MX-19[15:8]), vol_dac1_r (MX-19[7:0]),
vol_mono_dacl (MX-1A[15:8] and vol_mono_dacr (MX-1A[7:0]).
L
Analog DACL1
CH1
CH2
IF1_DAC
I2S1
R
Analog DACR1
L
Analog DACL2
CH3
CH4
I2S2
IF2_DAC
R
Analog DACR2
Figure 16. 4-Channel Playback Path
Multi-Channel Audio Hub/CODEC with embedded Voice
DSP and SounzRealTM Digital Sound Effect
26
Rev. 0.93
REALTEK [ Realtek Semiconductor Corp. ]
