Cirrus Logic CDB42L55 - Manual (Page 18)

18 DS773DB1
CDB42L55
JMP LABEL PURPOSE POSITION FUNCTION SELECTED
J31 VL
Selects source of voltage for the
VL supply
*+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.
J36 VCP
Selects source of voltage for the
VCP supply
*+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.
J25 VA
Selects source of voltage for the
VA supply
*+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.
J28 VLDO
Selects source of voltage for the
VLDO supply
*+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.
J52
J74
J53
J48 VLDO
VA
VL
VCP
Current Measurement
*SHUNTED 1 Ω series resistor is shorted.
OPEN 1 Ω series resistor in power supply path.
J11 Shunt to RCA Provides RCA reference to GND *SHUNTED
AIN2B and AIN2A RCAs are given a ground ref-
erence.
J7 Shunt to RCA Provides RCA reference to GND *SHUNTED
AIN1B and AIN1A RCAs are given a ground ref-
erence.
J22 HP Detect
Selects how the HP_Detect pin on
CS42L55is driven
1 - 2 HPDETECT is driven by FPGA/GUI.
*2 - 3
HPDETECT is driven by HP Jack line when a
stereo connection is inserted in J1.
J5 1.8V Buck Input
Selects power supply source for
+1.8VB
1 - 2 1.8VB is derived from external input.
*2 - 3 1.8VB is derived from AAA batteries.
J12 HPOUTA Selects test load from HPOUTA
1 - 2 32 Ω load selected for HPOUTA.
2 - 3 16 Ω load selected for HPOUTA.
J4 HPOUTB Selects test load from HPOUTB
1 - 2 32 Ω load selected for HPOUTB.
2 - 3 16 Ω load selected for HPOUTB.
J2
HPOUTA
HPOUTA(LPF)
Connects or removes LPF for
HPOUTA
1 - 2 No filtered output selected for HPOUTA.
*2 - 3 RC filtered output selected for HPOUTA.
J3
HPOUTB
HPOUTB(LPF)
Connects or removes LPF for
HPOUTB
1 - 2 No filtered output selected for HPOUTB.
*2 - 3 RC filtered output selected for HPOUTB.
J34 Board Power Selects source of Board Power
1 - 2
Board powered from external +5V source con-
nected to TP9/TP10.
*2 - 3 Board powered from USB.
*Default factory settings
Table 2. Jumper Settings