CDB42L73 Datasheet, PDF (10/36 Pages) Cirrus Logic – Ecaluation Borard for the CS42L73

CDB42L73
JUMPER PIN
BLOCK
PURPOSE
POSITION
FUNCTION SELECTED
J54
LINEIN_REF Line input reference [*]
Shunted Line input shield connection of J32 and J33 is shunted to
to GND select
board ground.
Open Line input shield connection of J32 and J33 is not con-
nected to board ground, thus the CS42L73 line input is ref-
erenced to the incoming signal reference instead of the
board ground.
J55
MIC1_REF MIC1 reference to [*]
Shunted MIC1 input shield connection of J34 is shunted to board
GND select
ground.
Open MIC1 input shield connection of J34 is not connected to
board ground, thus the CS42L73 MIC1 input is referenced
to the incoming signal reference instead of the board
ground.
J56
MIC2_REF MIC2 reference to [*]
Shunted MIC2 input shield connection of J35 is shunted to board
GND select
ground.
Open MIC2 input shield connection of J35 is not connected to
board ground, thus the CS42L73 MIC2 input is referenced
to the incoming signal reference instead of the board
ground.
J36
HPOUT_REF Headphone output [*]
reference to GND
select
Shunted Headphone output shield connection of J29 is shunted to
board ground.
Open Headphone output shield connection of J29 is not con-
nected to board ground, thus the CS42L73 headphone out-
put is referenced to the outgoing connection reference
instead of the board ground.
J38 LINEOUTA LPF Line output A low- [*]
pass filter enable/dis-
able
BYPASS Line output A low-pass filter is disabled
ON Line output A low-pass filter is enabled
J39 LINEOUTB LPF Line output B low- [*]
pass filter enable/dis-
able
BYPASS Line output B low-pass filter is disabled
ON Line output B low-pass filter is enabled
J37
LINEO_REF Line output reference [*]
Shunted Line output shield connection of J30 and J31 is shunted to
to GND select
board ground.
Open Line output shield connection of J30 and J31 is not con-
nected to board ground, thus the CS42L73 headphone out-
put is referenced to the outgoing connection reference
instead of the board ground.
J59, J60
SPKLINEO Speakerphone line [*]
output to CS35L01 or
passthrough
AMP Output on J48 is amplified by the CS35L01 class-D ampli-
fier.
PASSTHRU Output on J48 is direct connected to the CS42L73 speaker-
phone line output pins.
Table 2. CDB42L73 Jumper Settings
LED
STATUS
FUNCTION
D2 USB PRESENT
On
Indicates there is a USB connection to the CDB42L73.
Off
Indicates there is not a USB connection to the CDB42L73.
D3 SPDIF ERROR
On
Indicates there is either no S/PDIF input or error in the S/PDIF data stream.
Off
Indicates the connected S/PDIF input is valid.
D4
+5V
On
Indicates the +5 V main supply is powered.
Off
Indicates the +5 V main supply is not powered.
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DS882DB1