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AS3415 датащи(PDF) 72 Page - ams AG

номер детали AS3415
подробное описание детали  Integrated Active Noise Cancelling Solution with Bypass Feature
PDF  102 Pages
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производитель  AMSCO [ams AG]
домашняя страница  http://www.ams.com
Logo AMSCO - ams AG

AS3415 датащи(HTML) 72 Page - ams AG

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AS3415/AS3435 – 72
ams Datasheet, Confidential: 2014-Jun-13 [v1-30]
Re g i st e r De sc rip t ion
Figure 91:
ANC_MODE Register Description
Name
Address
Default Value
ANC_MODE
0x14
00h
The ANC_MODE register controls various settings for the chipset in active noise cancelling mode like which
amplifiers are enabled as well as which audio inputs are active.
Bit
Bit Name
Default
Access
Bit Description
7:6
HPH_MUX<1:0>
00
R/W
This register selects the ANC input source for the
headphone amplifier in ANC mode. Depending on the
register setting the outputs of microphone
preamplifier, OPAMP1, OPAMP2 can be connected to
the headphone amplifier input. It is also possible to
disconnect all ANC input sources which is sometimes
desired in monitor mode.
00: QMIC outputs are connected to HPH input
01: OP1 outputs are connected to HPH input
10: OP2 outputs are connected to HPH input
11: Nothing connected to HPH input except line input
and mixer input in case they are enabled.
5
LIN_MUTE
0
R/W
This bit defines the status of the line input mute
switch in active noise cancelling mode. If the bit is set
to ‘1’ the line input amplifier is disconnected from the
headphone amplifier.
0: Line input connected to headphone amplifier
1: Line input not connected to headphone amplifier
4MIX_ENABLE
0
R/W
This bit enables the headphone mixer input pin to mix
external signals to the headphone amplifier in active
noise cancelling mode.
0: HPH mixer input disabled
1: HPH mixer input enabled
3OP2L_ON
0
R/W
This register enables the left channel of OPAMP 2 in
ANC mode.
0: Left OP2 is switched off
1: Left OP2 is switched on
2OP2R_ON
0
R/W
This register enables the right channel of OPAMP 2 in
ANC mode.
0: Right OP2 is switched off
1: Right OP2 is switched on
1OP1L_ON
0
R/W
This register enables the left channel of OPAMP 1 in
ANC mode.
0: Left OP1 is switched off
1: Left OP1 is switched on
0OP1R_ON
0
R/W
This register enables the right channel of OPAMP 1 in
ANC mode.
0: Right OP1 is switched off
1: Right OP1 is switched on



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