Cirrus Logic CDB42L73 - Manual (Page 10)

10 DS882DB1
CDB42L73
Table 2. CDB42L73 Jumper Settings
J54 LINEIN_REF Line input reference
to GND select
[*] Shunted
Open
Line input shield connection of J32 and J33 is shunted to
board ground.
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
GND select
[*] Shunted
Open
MIC1 input shield connection of J34 is shunted to board
ground.
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
GND select
[*] Shunted
Open
MIC2 input shield connection of J35 is shunted to board
ground.
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
Open
Headphone output shield connection of J29 is shunted to
board ground.
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
ON
Line output A low-pass filter is disabled
Line output A low-pass filter is enabled
J39 LINEOUTB LPF Line output B low-
pass filter enable/dis-
able
[*] BYPASS
ON
Line output B low-pass filter is disabled
Line output B low-pass filter is enabled
J37 LINEO_REF Line output reference
to GND select
[*] Shunted
Open
Line output shield connection of J30 and J31 is shunted to
board ground.
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
PASSTHRU
Output on J48 is amplified by the CS35L01 class-D ampli-
fier.
Output on J48 is direct connected to the CS42L73 speaker-
phone line output pins.
LED STATUS FUNCTION
D2 USB PRESENT On
Off Indicates there is a USB connection to the CDB42L73.
Indicates there is not a USB connection to the CDB42L73.
D3 SPDIF ERROR On
Off Indicates there is either no S/PDIF input or error in the S/PDIF data stream.
Indicates the connected S/PDIF input is valid.
D4 +5V On
Off Indicates the +5 V main supply is powered.
Indicates the +5 V main supply is not powered.
JUMPER PIN
BLOCK
PURPOSE POSITION FUNCTION SELECTED