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DA7219 Datasheet(PDF) 39 Page - Renesas Technology Corp

Part # DA7219
Description  Audio Codec with Advanced Accessory Detect
PDF  129 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

DA7219 Datasheet(HTML) 39 Page - Renesas Technology Corp

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DA7219
Audio Codec with Advanced Accessory Detect
Datasheet
Revision 3.4
24-Dec-2021
CFR0011-120-00
39 of 128
© 2021 Renesas Electronics
11.3.4
Digital Router
DA7219 includes a digital router which is configured by registers DIG_ROUTING_DAI and
DIG_ROUTING_DAC.
The router options are illustrated in Figure 12.
dac_l_src
DIG_ROUTING_DAC
ADC_L
TONEGEN
DAI_IN_L
DAI_IN_R
DAC_L
DAC_R
DAI_OUT_L
dai_l_src
dai_r_src
dac_r_src
DIG_ROUTING_DAI
DA7219 Digital Router
DAI_OUT_R
2E[5:4]
2E[1:0]
2A[5:4]
2A[1:0]
[01]
[10]
[11]
[00]
Figure 12: DA7219 Digital Router
DIG_ROUTING_DAC is used to select the inputs to go into the DAC filter chain from the router.
DIG_ROUTING_DAI is used to select the inputs to go into the DAI from the router.
For example, for dac_l_src, data selection to the DAC_L path is
● 00 = ADC left output
● 01 = Tone generator
● 10 = DAI input left / DAI mono mix
● 11 = DAI input right / DAI mono mix
The same 2-bit code (00, 01, 10, 11) is used for dac_r_src, dai_l_src and dai_r_src.
11.3.5
System Control
The system control (SC) automates the sequencing of the multiple blocks required to set up one or
more particular audio paths. It is an optional feature, and operates by performing register writes with
optimal sequencing and timing, thus eliminating pops and clicks.
The SC for the inputs is configured using SYSTEM_MODES_INPUT, and for the outputs by using
SYSTEM_MODES_OUTPUT. Writing to the mode_submit field of either of these registers will cause
the system controller to process both input and output paths.



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