Application scenario introduction of nixie tube driver chip + voice chip, wt588e02b-24ss

WT588E Voice chip + Introduction to the application scenarios of digital tubes

Preface ：

WT588E02B Voice chip is a SPI Voice chip of communication mode 、 The biggest feature is that customers can pass SPI agreement , Send voice data according to the specified data replacement process , Realize that customers can update audio data online , It is conducive to the upgrading and iteration of customers' products , Keep the product alive .

in order to “ Good service engineers , Serve more engineers ” This goal , Let the voice chip of Weichuang Zhiyin complete more functions for customers , Launched nixie tube expansion . Through the voice chip of Weichuang Zhiyin IO The port is connected with the nixie tube , Can replace the customer to drive the nixie tube , Realize the display of nixie tube . And the customer just needs 4 individual IO The voice chip communication between mouth and Weichuang bosom friend , It greatly saves the resources of the customer's main control chip .

Let's first introduce the basic information of the voice chip of Weichuang Zhiyin , Let you have a general understanding of the functions of this chip of the VIZON bosom friend , We are introducing you to the application scenario of this function of VCR bosom friend .

Basic introduction to chip ：

1. 16 position DSP Voice chip 、32Mhz Internal oscillation ;

2. Working voltage 2.0~5.5V;

3. 16bit Of PWM/DAC Output 、 Can drive directly 8R 0.5W horn ;

4. Support 6K~32Khz Of WAV file ;

5. Customers can use MCU Or the supporting downloader can replace the internal voice content of the chip online ;

6. Support simulation SPI Communications ;

7. Maximum support 4 passageway 16K Sample rate mix ;

8. Support the highest 16 passageway midi Play （8K Sampling rate ）;

9. Support 224 Segment address , There are more requirements to expand ;

10. With hardware SPI Interface 、UART Interface 、IIC、 Built in comparator and other interfaces . Various functions can be customized for customers .

11. Chip built in 220k byte The storage （ Does not contain the master program ）.

12. The chip master program and the built-in stored data can be erased and then burned .

13. The power on initialization time of the chip is about 200ms

Pin function diagram ：

Introduction to communication protocol ：

SPI It's serial communication protocol , In other words, data is transmitted bit by bit .MISO Pins and MOSI The data on the pin MSB Bit must be the same as SPSCK The first edge of the is synchronized , stay SPI During transmission , At the beginning of the synchronization clock signal cycle （ Rising edge ） Data online , Then, when synchronizing the falling edge of the clock signal ,SPI The receiver captures the bit signal , At the end of a cycle of the clock signal （ Rising edge ）, The next data signal is online , Repeat the above process , First mover , Until one byte 8 Bit signal transmission ends . Thus, the control of voice playback can be realized 、 stop it 、 Circulation and other functions . See the following introduction for details .

SPI The control mode is controlled by the chip CS、SCK and SI Carry out control operation , Before each byte of data is sent ,CS Pull down first 4ms to 20ms, Recommended 5ms, And then send CLK, The high bit of received data comes first , Receive data at the fall of the clock . The clock cycle is between 160us～2ms Between , Recommended cycle use 200us. Send data first , Send another low . The instructions in the data are sent according to the instruction table .

Introduction to playing instructions ：

1、 Play command

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Parameters 1： The voice address to be played needs

example ：A0 01

Play 01 Address

2、 Cyclic instruction

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Parameters 1：00 Cancel playback

01 Single tune circulation

02 Play 2 Time

03 Play 3 Time

And so on

example ：AF 03

Loop back to the last played address 3 All over

3、 Code play

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Parameters ： The address that needs to be played with code , You can connect codes at most 40 paragraph

example ：AF 00 01 02

Concatenated playback address ：00 01 02

4、 Volume adjustment

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Parameters 1： have 64 Level volume adjustment （ Including silence ） The volume level that needs to be adjusted

example ：AE 20

Adjust the volume level to 32 level

5、 Stop command

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Stop chip playback

Introduction to nixie tube instructions ：

1、 Nixie tube automatic address display

Parameters 1：00 The nixie tube is updated by covering , That is, only the nixie tube in this command will be displayed , Other nixie tubes are off

01 The nixie tube is updated by replacing , It will only change the nixie tube in the command , Other nixie tubes still keep their original display

Parameters 2： Which nixie tube starts to display

Parameters 3： From parameter 2 Our nixie tube began to update

Parameters N： Nixie tube brightness adjustment has 0~8 files

example ：FF 02 B1 01 C1 3F 3F 3F 02

Update nixie tube second 、 3、 ... and 、 The four digit nixie tube displays the value 0, Other nixie tube displays remain unchanged

2、 Nixie tube fixed address display

Parameters 1：00 The nixie tube is updated by covering , That is, only the nixie tube in this command will be displayed , Other nixie tubes are off

01 The nixie tube is updated by replacing , It will only change the nixie tube in the command , Other nixie tubes still keep their original display

Parameters 2： stay CX The nixie tube shows XX data

Parameters N： Nixie tube brightness adjustment has 0~8 files

example ：FF 02 B2 00 C1 3F C3 3F 08

Only the second 、 Four digit nixie tube , The displayed value is 0, Other nixie tubes do not display , The overall brightness is 8 files

3、 Brightness adjustment

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Parameters 2： The brightness parameters of nixie tube are 0~8 files

example ：FF 02 B3 00 05

Adjust the brightness of all nixie tubes to grade 5

Parameters 2： Adjust section Cx The brightness of bit nixie tube is XX

example ：FF 02 B3 01 C1 08 C7 07

Adjust the brightness of the second digit nixie tube to 8, The brightness of the eighth digit nixie tube is 7

4、 Turn off the nixie tube

Turn off all nixie tubes

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Parameters 2： Turn off the nixie tube

example ：FF 02 B4 01 C2 C3

Close the third 、 Four digit nixie tube

5、 Control a section of nixie tube separately

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Parameters 1： Control which digital tube

Parameters 2： Which section of nixie tube controls

Parameters 3：00 Turn off the display of this segment

01 Turn on this segment to display

example : FF 02 B4 C2 00 00

Turn off the third digit nixie tube A The segment shows

Introduction to data replacement instruction ：

1、 Replace the command header

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Parameters 1： Change the address of the song number

Order to change a single

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Replacement serial number of all sounds

2、 Query instructions

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After sending the change instruction, the chip will return data

reply 00 or FF： busy

reply 01： Leisure

reply 02： Space full

3、 The starting instruction of a packet

4、 Change end instruction

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After sending the change instruction, the chip will return data , It is the verification of the last packet of data you sent

5、 Replacement process

Application schematic diagram ：

Introduction to application scenarios ：

Know the instructions of Weichuang Zhiyin voice chip , I know the details of the operation of the nixie tube , Passing instructions , Customers can control the nixie tube freely and flexibly , Detailed to single-stage control .

Of course, in addition to the detailed control of nixie tube , And self changing voice .

example 1：

In the intelligent alarm clock industry . Customer MCU You can control the nixie tube by sending instructions to the voice chip , And you can use your cell phone App And so on , Let customers choose their own ringtones , Replace the original sound , Increase product vitality .

example 2：

In the game industry . By changing the game sound , Different nixie tube controls , So that we can make different game devices . For example, using a game shooting machine , The eight digit nixie tube can be divided into 2 individual 4 Digital tube , Shoot PK, You can also 1 individual 4 Bit digital tube for a countdown , Become a shooting pass , This can be created by customers themselves . This is a different game transformed from the rules of the same game type , But if I can replace the sound of the game with a boxing device , Is there a different product .

summary ：

In short , The voice chip of Weichuang Zhiyin has the ability to update voice content online , And free and flexible 8 Bit nixie tube control , And just need to occupy the customer MCU Of 4 individual IO mouth , Let customers have more resources to deal with more information .