NJU8402

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s TERMINAL DESCRIPTION

PIN

No.

SYMBOL

INPUT

/OUTPUT

FUNCTION

1V

DD



Digital Power Supply, +5V

16

V

SS



Digital GND, 0V

8AV

DD



Analog Power Supply, +5V

9AV

SS



Analog GND, 0V

2

MCKI

I

Master Clock Input Terminal

The input signal frequency is 256 times or 384 times of fs.

13

DIN

I

Serial Audio Data Input Terminal

14

LRCK

I

L/R Channel Clock Input Terminal

This clock must synchronize with MCKI.

15

BCLK

I

Audio Serial Data Clock Input Terminal

This clock must synchronize with MCKI.

3SCK

I

Control Register Serial Data Sift Clock Input Terminal

Control register leads the control data synchronizing the rising edge of SCK

signal. When the control register is not used, the state of SCK terminal has to

keep level ”H”.

4DATA

I

Control Register Serial Data Input Terminal

Input data sets various functions.

When the control register is not used, the state of DATA terminal has to keep level

“H”.

5REQ

I

Control Register Serial Data Request Input Terminal

The control data are latched in the control register at the rising edge of REQ

signal.

When the control register is not used, the state of REQ terminal has to keep level

“H”.

12

RST

I

Reset

“L” level signal into reset

terminal initializes the system.

7VCOML



Left channel Analog Signal Common Terminal for Connecting Smooth Capacitor

A chemical capacitor should be connected between this terminal and AV

stabilizing.

10

VCOMR



Right Channel Analog Signal Common Terminal for Connecting Smooth Capacitor

A chemical capacitor should be connected between this terminal and AV

stabilizing.

6

AOUTL

O

L-Channel Analog Signal Output Terminal

11

AOUTR

O

R-Channel Analog Signal Output Terminal