[AK4671]
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Handling of Unused Pin on the System
The unused I/O pins on the system should be processed appropriately as below.
Classification
Pin Name
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
MCKO, SDTOA, SDTOB, GPO1, GPO2, CDTO
MCKI, SDTIA, SDTIB
Setting
Analog
These pins should be open.
Digital
BICKA, SYNCA, BICKB, SYNCB
These pins should be open.
These pins should be connected to VSS4.
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 100kΩ.
MS0666-E-02
-6-
2010/06
AKM [ ASAHI KASEI MICROSYSTEMS ]
