Nuvoton NAU88C22 Manuale utente

NAU88C22 Demo Board User Manual

MAY. 25, 2021 Page 1of 21 Rev1.0

NAU88C22 Demo Board

User Manual

The PCB name: EVB-NAU88C22YG_V1.0

Ordering P/N: NL-NAU88C22

The information described in this document is the exclusive intellectual property of

Nuvoton Technology Corporation and shall not be reproduced without permission from Nuvoton.

Nuvoton is providing this document only for reference purposes of microcontroller based system design.

Nuvoton assumes no responsibility for errors or omissions.

All data and specifications are subject to change without notice.

For additional information or questions, please contact: Nuvoton Technology Corporation.

www.nuvoton.com

 NAU88C22 Demo Board User Manual
 
MAY. 25, 2021 Page 2of 21 Rev1.0 
TABLE OF CONTENTS 
1OVERVIEW ................................................................................ 5 
2INTRODUCTION.......................................................................... 6 
2.1 Top View ....................................................................................... 7 
2.2 Input / Output.................................................................................. 8 
2.3 Jumpers ...................................................................................... 10 
2.4 Schematic.................................................................................... 15 
2.5 Bare Board................................................................................... 17 
3CONNECTED TO AUDIO CONTROL BOARD .................................... 18 
4APPLICATION........................................................................... 19 
5REVISION HISTORY................................................................... 21 

 NAU88C22 Demo Board User Manual
 
MAY. 25, 2021 Page 3of 21 Rev1.0 
List of Figure 
Figure 2-1 NAU88C22 Demo Board......................................................................6 
Figure 2.1-1 Top View...........................................................................................7 
Figure 2.2-1 Input / Output....................................................................................8 
Figure 2.3-1 Jumpers..........................................................................................10 
Figure 2.4-1 Schematic (page 1).........................................................................15 
Figure 2.4-2 Schematic (page 2).........................................................................16 
Figure 2.5-1 Top View of Bare Board..................................................................17 
Figure 3-1 Connection Audio Control Board .......................................................18 
Figure 3-2 Signal Path ........................................................................................18 

NAU88C22 Demo Board User Manual

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List of Tables

Table 2.1-1 Main Components..............................................................................7

Table 2.2-1 Input / Output.....................................................................................9

Table 2.3-1 Jumpers...........................................................................................14

NAU88C22 Demo Board User Manual

MAY. 25, 2021 Page 5of 21 Rev1.0

1 OVERVIEW

The NAU88C22 is a low power, high quality CODEC for portable and general purpose audio

applications. In addition to precision 24-bit stereo ADCs and DACs, this device integrates a broad

range of additional functions to simplify implementation of complete audio system solutions. The

NAU88C22 includes drivers for speaker, headphone, and differential or stereo line outputs, and

integrates preamps for stereo differential microphones, significantly reducing external component

requirements. Also, a fractional PLL is available to accurately generate any audio sample rate for the

CODEC using any commonly available system clock from 8MHz through 33MHz.

NAU88C22 Demo Board User Manual

MAY. 25, 2021 Page 6of 21 Rev1.0

2 INTRODUCTION

The NAU88C22 Demo Board is designed to allow a thorough evaluation of the audio codec.

Figure 2-1 NAU88C22 Demo Board

NAU88C22 Demo Board User Manual

MAY. 25, 2021 Page 7of 21 Rev1.0

2.1 Top View

Figure 2.1-1 Top View

Table 2.1-1 Main Components

Name

Description

NAU88C22YG

Audio CODEC

NAU88C22 Demo Board User Manual

MAY. 25, 2021 Page 8of 21 Rev1.0

2.2 Input / Output

Figure 2.2-1 Input / Output

NAU88C22 Demo Board User Manual

MAY. 25, 2021 Page 9of 21 Rev1.0

Table 2.2-1 Input / Output

Name

Description

J_CB

Pin 1

I2S Interface

MCLK, Master Clock

Pin 11

I2C Interface

SDA

Pin 3

BCLK, Bit Clock

Pin 13

SCL

Pin 5

DACIN

Pin15

Power.

Provide power

to Demo board.

VDDIO

Pin 7

ADCOUT

Pin 17

VDD1.8

Pin 9

FS ,Frame Sync

Pin 19

VDD3.3

Pin 21

VDD5

JP_I2S

These pins can also be I2S interface

Pin 1

MCLK, Master Clock

Pin 3

BCLK, Bit Clock

Pin 5

DACIN

Pin 7

ADCOUT

Pin 9

FS ,Frame Sync

JP_I2C_SPI

Pin1 and Pin2 are I2C interface.

In addition, this connector can be an SPI interface.

Pin 1

SDL

Pin 2

SCA

Pin 3

GND

Pin 4

CSB/GPIO1

Pin 5

RLIN/GPIO3

MIC

Microphone input.

Headphone

Headphone output.

Speaker

Speaker out.

AUXIN

Auxiliary input.

AUXOUT

Auxiliary output.

NAU88C22 Demo Board User Manual

MAY. 25, 2021 Page 10 of 21 Rev1.0

2.3 Jumpers

Figure 2.3-1 Jumpers

Indice

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