34825 datasheet(3/39 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

34825

PIN CONNECTIONS

TRANSPARENT

TOP VIEW

SPK_R

SPK_L

MIC

D+

D-

VDD

INT

I2C_SDA

I2C_SCL

OUT

GND

Figure 3. 34825 Pin Connections

Table 1. 34825 Pin Definitions

A functional description of each pin can be found in the Functional Pin Description section on page 13.

Pin Number

Pin Name

Pin Function

Formal Name

Definition

SPK_R

Input

Speaker right channel Right channel input for speaker signals

SPK_L

Input

Speaker left channel

Left channel input for speaker signals

MIC

Output

Microphone output

Microphone output to the baseband of the cell phone system

D+

D+ of the USB

transceiver

D+ line of the USB transceiver

D-

D- of the USB

transceiver

D- line of the USB transceiver

RXD

Output

UART receiver

Receive line of the UART

TXD

Input

UART transmitter

Transmit line of the UART

TEST2

Output

TEST cable type

indicator

Push-pull output to indicate the type of the test cable. This pin is internally

pulled up to the VDDIO voltage.

VDDIO

Input

IO power supply

IO supply voltage. The VDDIO voltage is used as the reference voltage

for the I2C bus signals and the pull-up voltage for the TEST2 output. This

pin also functions as a hardware reset to the IC.

TEST1

Output

TEST cable indicator

Open-drain output to indicate the connection of a test cable

VDD

Input

Power supply

IC power supply input

INT

Output

Interrupt output

Open-drain interrupt output

I2C_SDA

I2C data

Data line of the I2C interface

I2C_SCL

Input

I2C clock

Clock line of the I2C interface

OUT

Output

Power output

The output of the power MOSFET pass switch

ISET

Output

Charge current setting Open-drain output to set the charger current

VBUS

Input

VBUS power supply

VBUS line of the Mini or micro-USB connector

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