Table 2. Jumper Settings - Cirrus Logic CDB42L55 Manual

JMP LABEL
J31 VL
J36 VCP
J25 VA
J28 VLDO
J52 VLDO
J74 VA
J53 VL
J48 VCP
J11 Shunt to RCA
J7 Shunt to RCA
J22 HP Detect
J5 1.8V Buck Input
J12 HPOUTA
J4 HPOUTB
HPOUTA
J2
HPOUTA(LPF)
HPOUTB
J3
HPOUTB(LPF)
J34 Board Power
18
PURPOSE
Selects source of voltage for the
VL supply
Selects source of voltage for the
VCP supply
Selects source of voltage for the
VA supply
Selects source of voltage for the
VLDO supply
Current Measurement
Provides RCA reference to GND
Provides RCA reference to GND
Selects how the HP_Detect pin on
CS42L55is driven
Selects power supply source for
+1.8VB
Selects test load from HPOUTA
Selects test load from HPOUTB
Connects or removes LPF for
HPOUTA
Connects or removes LPF for
HPOUTB
Selects source of Board Power

Table 2. Jumper Settings

POSITION FUNCTION SELECTED
*+1.8V Voltage source is +1.8 V regulator.
+2.5V Voltage source is +2.5 V regulator.
+3.3V Voltage source is +3.3 V regulator.
+1.8VB Voltage source is +1.8V from battery.
*+1.8V Voltage source is +1.8 V regulator.
+2.5V Voltage source is +2.5 V regulator. .
+1.8VB Voltage source is +1.8V from battery.
*+1.8V Voltage source is +1.8 V regulator.
+2.5V Voltage source is +2.5 V regulator. .
+1.8VB Voltage source is +1.8V from battery.
*+1.8V Voltage source is +1.8 V regulator.
+2.5V Voltage source is +2.5 V regulator. .
+1.8VB Voltage source is +1.8V from battery.
1 Ω series resistor is shorted.
*SHUNTED
1 Ω series resistor in power supply path.
OPEN
AIN2B and AIN2A RCAs are given a ground ref-
*SHUNTED
erence.
AIN1B and AIN1A RCAs are given a ground ref-
*SHUNTED
erence.
1 - 2 HPDETECT is driven by FPGA/GUI.
HPDETECT is driven by HP Jack line when a
*2 - 3
stereo connection is inserted in J1.
1 - 2 1.8VB is derived from external input.
*2 - 3 1.8VB is derived from AAA batteries.
32 Ω load selected for HPOUTA.
1 - 2
16 Ω load selected for HPOUTA.
2 - 3
32 Ω load selected for HPOUTB.
1 - 2
16 Ω load selected for HPOUTB.
2 - 3
1 - 2 No filtered output selected for HPOUTA.
*2 - 3 RC filtered output selected for HPOUTA.
1 - 2 No filtered output selected for HPOUTB.
*2 - 3 RC filtered output selected for HPOUTB.
Board powered from external +5V source con-
1 - 2
nected to TP9/TP10.
*2 - 3 Board powered from USB.
CDB42L55
*Default factory settings
DS773DB1