Cirrus-logic CDB42L55 Manual de usuario descargar pdf (Pagina 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

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.

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.

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

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 35 36

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Cirrus-logic CDB42L55 Manual de usuario Pagina 18

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