Datasheet AK4377A (Asahi Kasei Microdevices) - 8

[AK4377A] No. Pin Name I/O Protection
Diode Function Power
Domain Control Interface
TVDD/
VSS3
TVDD/
VSS3 I2C Serial Data Clock Pin B2 SCL I B3 SDA I/O I2C Serial Data Input/Output Pin TVDD
TVDD Audio Interface
A3 MCKI I External Master Clock Input Pin A1 XTI I X’tal Oscillator Input Pin A2 XTO O X’tal Oscillator Output Pin A4 BCLK I/O Audio Serial Data Clock Pin B5 LRCK I/O Frame Sync Clock Pin B6 SDATA I Audio Serial Data Input Pin TVDD/
VSS3
AVDD/
VSS1
AVDD/
VSS1
TVDD/
VSS3
TVDD/
VSS3
TVDD/
VSS3 TVDD
AVDD
AVDD
TVDD
TVDD
TVDD Analog Output
F1 HPL O Lch Headphone-Amp Output Pin F2 HPR O Rch Headphone-Amp Output Pin E2 HPGND I Headphone-Amp Ground Loop Noise
Cancellation Pin CVDD/
VEE2
CVDD/
VEE2 CVDD/
VEE2
CVDD/
VEE2 -Others
TVDD/
TVDD
VSS3
TVDD/
C4 TESTI1
I
TVDD
VSS3
AVDD/
D3 TESTO
O Test Output Pin
AVDD
VSS1
Test Input Pin
TVDD/
C3 TESTI2
I
TVDD
It must be tied “L”.
VSS3
Note 5. The SCL pin, SDA pin, MCKI pin, BCLK pin, LRCK pin, SDATA pin, HPGND pin, PDN pin,
TESTI1 pin and the TESTI2 pin must not be allowed to float. I/O pins should be connected
appropriately.
C5 PDN I Power down Pin
“L”: Power-down, “H”: Power-up
Test Input Pin
It must be tied “L”. ■ Handing of Unused Pins
Unused I/O pins must be connected appropriately.
Classification Pin Name
HPL, HPR, XTO
Analog
XTI
TESTO
Digital
MCKI, TESTI1, TESTI2 Setting
Open
Open (PMOSC bit is fixed to “0”)
Open
Connect to VSS3 018001092-E-00 2018/02
-8-