CP2114-WM8523EK Ver la hoja de datos (PDF) - Unspecified

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CP2114-WM8523EK

CP2114 EVALUATION KIT USER’S GUIDE

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CP2114-EK

5.3.5. Voltage Regulator Connector (JP11)

The JP11 connector is used to connect the VBUS signal being supplied to the CP2114 to the input of the voltage

regulator on the WM8253 evaluation board. Installing this jumper connects the VBUS signal to the regulator output.

If another voltage supply is used, JP11 should be removed and the supply should be connected to pin 2 of the

header.

5.3.6. WM8253 Supply Voltage Header (JP12)

The JP12 header provides access to the WM8253 supply voltage.

5.3.7. WM8253 Supply Voltage Connector (JP13)

This header (JP13) is included on the evaluation board to provide several power options for the WM8253. The

following describes the function of each pin:

Shorting pins 1,2: Connects the regulator output on the WM8253-EB to the supply of the WM8253.

Shorting pins 2,3: Connects the CP2114 VDD (CP2114 pin 7) to the supply of the WM8253.

5.3.8. Headphone Amplifier SHDN Header (JP14, JP16–JP20)

The jumpers JP14 and JP16-JP20 control the headphone amplifier shutdown (SHDN) pin. The headphone

amplifier is enabled when SHDN is high and disabled when SHDN is low. In the default configuration (jumper

shorting pins1 and 2), the headphone amp is always enabled. Shorting pins 2 and 3 on JP14 will disable the

headphone amplifier. Removing JP14 and connecting one of JP16-JP20 allows the host to control the headphone

amp via GPIO pin. In this case, the corresponding GPIO-GPIO_C jumper must also be installed on the CP2114-EK

board.

5.3.9. Ground Header (JP15)

The JP15 header provides access to ground.

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Rev. 0.1

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