ADAV4601 System Design Document
Confidential Information
Rev.1 August 2009
Analog Devices
Page 41
Headphone Channel
This has some basic processing; Volume, EQ and Loudness. It also simultaneously outputs on AUXOUT4.
AUXOUT1 Channel
This has a Volume control.
S/PDIF Channel
This has a Volume control. It can also be configured by changing Bit 9 in register 0x000C to output on SDO1.
SDO0 Channel
This has a Volume control.
INPUTS
Each of the five parallel channels has an output mute and an input mux; Main Mux, HP Mux, AUXOUT1 Mux, S/PDIF
Mux, SDO0 Mux.
Each of these Muxes have the following ten inputs available;
ADC1
SDIN0
SDIN1
SDIN2/SRC2 Channel B
SDIN3/SRC2 Channel C
SRC1
SRC2 Channel A
Main Channel after Lip Sync (Not Available to Main Mux)
Main Channel after loudness (Not Available to Main Mux)
Sub Channel (Not Available to Main Mux)
The default for each Mux is no input.
SCENARIOS
The Default Flow has five channels, some with different output options and ten inputs per channel. There are a
multitude of routing possibilities with this flow. Below there are a few examples of common scenarios.
All I
2
C writes assume part is already fully powered up with relevant sections enabled and clocks correctly
configured.
Analog In to Analog Out with no audio processing
34 0101 0010
#Route AUXIN1 to AUXOUT1
34 0121 0002
#Unmute AUXOUT1 output
Analog In to Analog Out with audio processing
34 0100 1000
#Route AUXIN1 to Main
34 0122 FDC1
#Enable AVC, Lip Sync, EQ, Bass, Loudness, Limiter, Crossover.
34 0122 FDE1
#Add the tweeter and woofer channels together
34 0121 0020
#Unmute Main Tweeter/AUXOUT3 output
Содержание ADAV4601
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