AK4671 datasheet(6/166 Pages) AKM

Part #	AK4671

Description	Stereo CODEC with MIC/RCV/HP-AMP

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Manufacturer	AKM [Asahi Kasei Microsystems]

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[AK4671]

MS0666-E-02

2010/06

- 6 -

■ Handling of Unused Pin on the System

The unused I/O pins on the system should be processed appropriately as below.

Classification

Pin Name

Setting

Analog

MPWR, MDT, VCOC, ROUT3/LON, LOUT3/LOP,

ROUT2, LOUT2, MUTET, ROUT1/RCN,

LOUT1/RCP, RIN4/IN4

−, LIN4/IN4+, RIN3/IN3−,

LIN3/IN3+, RIN2/IN2

−, LIN2/IN2+, RIN1/IN1−,

LIN1/IN1+, VCOCBT, SAIN1, SAIN2, SAIN3

These pins should be open.

MCKO, SDTOA, SDTOB, GPO1, GPO2, CDTO

These pins should be open.

MCKI, SDTIA, SDTIB

These pins should be connected to VSS4.

Digital

BICKA, SYNCA, BICKB, SYNCB

When all pins are unused, these pins should

be connected to VSS4 and PMPCM bit

must be always “0”.

When either PCM I/F A(BICKA/ SYNCA)

or PCM I/F B(BICKB/SYNCB) is used,

unused pins are connected to pull-down/up

resistor of about 100k

Ω.

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