Guangzhou Waytronic Technology Co.
,LTD WTV020-S
The instructions for WTV020-S
Content
1、Product features .................................................................................................................................2
2、Application ........................................................................................................................................2
3、Pin scheme .......................................................................................................................................2
4、Pin discription ....................................................................................................................................2
5、Control mode .....................................................................................................................................3
5.1、Key triggermode.........................................................................................................................3
5.1.1、Pulse repeatable trigger .......................................................................................................3
5.1.2、Pulse unrepeatable trigger ....................................................................................................3
5.1.3、Level maintain not cycle ......................................................................................................4
5.1.4、Lever maintain not cycle ......................................................................................................4
5.1.5、Play/pause ......................................................................................................................4
5.1.6、Next not cycle...................................................................................................................4
5.1.7、Previous not cycle..............................................................................................................5
5.1.8、Next recycle .....................................................................................................................5
5.1.9、Previous recycle ................................................................................................................5
5.1.10、Stop .............................................................................................................................6
5.2、One-line serial trigger mode ..........................................................................................................6
5.2.1、I / O port allocation table .....................................................................................................6
5.2.2、Order Code Description .......................................................................................................6
5.2.3、Control Timing ..................................................................................................................7
5.3、Three-line serial control................................................................................................................7
5.3.1、I / O port allocation table .....................................................................................................7
5.3.2、Order Code Description .......................................................................................................8
5.3.3、Control Timing ..................................................................................................................8
6、Typical Application Circuit......................................................................................................................9
6.1、Key control PWM output application circuit ........................................................................................9
6.2、Key control DAC output application circuit .........................................................................................9
6.3、One-line serial control PWM output application circuit...........................................................................9
6.4、One-line serial control DAC output application circuit ......................................................................... 10
6.5、Three-line serial control PWM output application circuit ....................................................................... 10
6.6、Three-line serial control DAC output application circuit ....................................................................... 10
7、Package Dimension ........................................................................................................................... 11
8、Version record .................................................................................................................................. 11
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1、Product features
¾ Support PCM,ACPCM,WAV audio format .
¾ Easy to edit the voice, can convert MP3 , WMV and others by the PC directly.
¾ Support the external SPI Flash up to 64M ,the voice length up to more than 2000 seconds.
¾ Support 3328 sections voice at maximum.
¾ Update the voice data by USB port.
¾ Support four kinds of control modes:standard mode,key mode, one-line serial mode, three-line serial mode.
¾ Support playing the background music and the advertisement.
¾ Support the insertion function, can continue from the breakpoint of the previous music.
¾ Support playiung the random sections of the voice.
¾ Support the mixing-voice function.
¾ Support SPI-FLASH up to 64M
¾ Operating voltage: DC2.8～3.6V
2、Application
This product has good stability, excellent sound quality, used in automotive electronics, advanced toys, game consoles,
home appliances, security systems, loudspeakers and other occasions.
3、Pin icon
1 /RESET VCC 16
2 D AC BUSY 15
3 PW M + P07 14
4 PW M - P02 13
5 DI P03 12
6 DO P04 11
7 CLK P05 10
8 GND CS 9
4、Pin Description
package pin pin label brief description function description
1 /RESET /RESET Reset pin, low to maintain 5ms effective
2 DAC DAC DAC output
3 PWM+ PWM+ PWM+ audio output, can drive the speaker with PWM- audio output
4 PWM- PWM- PWM- audio output, can drive the speaker with PWM+ audio output
5 DI SPI-FLASH_DI Connect to the SPI-FLASH_DI, use to download the data
6 DO SPI-FLASH_DO Connect to the SPI-FLASH_DO, use to download the data
7 CLK SPI-FLASH_CLK Connect to the SPI-FLASH_CLK, use to download the data
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8 GND GND Ground
9 CS SPI-FLASH_CS Connect to the SPI-FLASH_CS, use to download the data
10 P05 I/O Key K4 / one-line serial DATA / three-line serial DATA
11 P04 I/O Key K3 / three-line serial CLK
12 P03 I/O Key K2 / three-line serial CS
13 P02 I/O Key K1
14 P07 I/O Temporarily unused
15 BUSY BUSY Busy signal output
16 VCC VCC power supply Positive
5、Control mode
WTV020-S has key control mode, one-line serial control mode, three-line serial control mode.
5.1、Key trigger mode
Defined pins can trigger the chip play,it means each pin can control one message to play. The trigger mode of each pin can be
set separately. Under the Key control mode, the judder-buffer time is 40ms. Key trigger includes pulse repeatable trigger, pulse
nonrepeatable trigger, level to maintain circulation, level to maintain noncirculation, voice switching play, next, previous, next
circulation, previous circulation. See the following timing chart for details：
5.1.1、Pulse repeatable trigger
EDGE
VOICE AD D 1 AD D1 AD D 1
BUSY
Note: negative pulse trigger. When the I / O port detects a falling edge (for example, the I / O port short-circuit to ground),
trigger play voice. During the voice playback, and then detects the falling edge, the chip will interrupt the currently playing audio,
re-broadcast. As long as there is a falling edge signal, it re-broadcast.
5.1.2、Pulse nonrepeatable trigger
EDGE
VOICE AD D 1 AD D 1
BUSY
Note: negative pulse trigger. When the I / O port detects a falling edge (for example, the I / O port short-circuit to ground),
trigger play voice. During the voice playback, and then detects the falling edge, the chip doesn`t work. It would be effective untill
the voice play ends and then detects a fallling edge.
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5.1.3、Level to maintain circulation
Note: When the I / O port is low level, keep playing, if high level then stop. When the first pass play ended and it remains low
level, then continue to re-broadcast until change to high level. As long as low level, there are sounds; high level, then no sound.
LEVEL
VOICE
Add1 Add1 Add1 Add1
BUSY
5.1.4、Level to maintain noncirculation
LEVEL
VOICE
Add1 Add1
BUSY
Notes: LOW level trigger. When the I / O port is low level, keep playing, high level then stop. When the first pass play ended and
remain low level, it will not continue to play and only play once after the trigger. If you need to play again, you need make I / O
port is high level, then pull to low level, it would be ok if you can maintain a low level.
5.1.5、Play/pause
EDGE
VOICE
BUSY PAUSE
Note: negative pulse trigger. Negative pulse , start playing. End playing after the next negative pulse.
Whether the sound is under the“Play” or “Stop”state, all should be in accordance with this rule.
5.1.6、Next noncirculation
EDGE
VOICE Add1 Add2 AddN
BUSY
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Note: negative pulse trigger. Trigger voice play with one key. A negative pulse trigger a voice phrase
play.The next negative pulse trigger the next voice phrase play and would not trigger the voice play untill
the last voice phrase.Repeat the operation, it can only play the last one.
5.1.7、Previous noncirculation
EDGE
VOICE AddN AddN -1 Add1
BUSY
Note: negative pulse trigger. Trigger voice play with one key. A negative pulse trigger a voice phrase
play.The next negative pulse trigger the previous voice phrase play and would not trigger the voice play
untill the most previous voice phrase.Repeat the operation, it can only play the most previous sound.
5.1.8、Next circulation
EDGE
VOICE Add1 Add2 AddN Add1
BUSY
Note: negative pulse trigger. Trigger voice play with one key. A negative pulse trigger a voice phrase
play.The next negative pulse trigger the next voice phrase play.Repeat the operation,when finished the
last voice phrase,then play the fist one.Trigger voice play circularly like this.
5.1.9、Previous circulation
EDGE
VOICE AddN AddN -1 Add1 AddN
BUSY
Note: negative pulse trigger. Trigger voice play with one key. A negative pulse trigger a voice phrase
play.The next negative pulse trigger the previous voice phrase play.Repeat the operation,when finished
the first voice phrase,then play the last one.Trigger voice play circularly like this.
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5.1.10、Stop
EDGE
VOICE
BUSY
Note: negative pulse trigger. Trigger voice play with one key. A negative pulse trigger a voice phrase
play.The next negative pulse will stop the voice play.
5.2、One-line serial trigger mode
Send the serial data through a data line.The timing protocol is the duty cycle data bit, one-line serial
can achieve the functions such as voice play and control commands etc.
5.2.1、I / O port allocation table
pin
Package
P02 P03 P04 P05
WTV020-S --- --- --- DATA
5.2.2、Order Code Description
Order Code Define Description
E0H~E7H Volume Control During the play or standby state, send such order code to adjust 16-level volume, E0H for
the minimum volume, EFH for the maximum volume
F2H loop Send this command to loop the current voice.
F3H stop loop Send this command to stop loop the current voice.
FEH stop Stop play the voice
Voice Address corresponding relationship
Data(Hex) Function
00 00H play the first voice phrase
00 01H play the second voice phrase
00 02H play the third voice phrase
…… ……
0C FDH paly the 3326th voice phrase
0C FEH paly the 3327th voice phrase
0C FFH paly the 3328th voice phrase
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5.2.3、Control timing
Send address data
One-line serial control timing only has one data communication line. Represent the different data bit in accordance with the
different duty cycle of levels .The data bit duty cycle of high level and low level is 1:3,that means data bit “0”.If 3:1, that means
data bit”1” .High level is in the front, low level is in the back.For address data, need send two bytes, high byte at first then low
byte.If for single byte, send low bit at first then high bit.Send the first byte, then pull “DATA” up to wait 1 ms and then send the
second byte.For example,if trigger the 300th voice phrase, send “01H+2CH”. Please check the following detailed timing
diagram:
/RESET 5m s
DATA 10m s 1m s
D8 D9 D10 D11 D12 D13 D14 D15 D0 D 1 D2 D3 D4 D5 D6 D7
BUSY 5m s 1m s 3m s
VOICE
Send control commands
For control command , only need send one byte
DATA 5m s
D0 D1 D2 D3 D4 D5 D6 D7
”DATA” is the Serial data communication line.Send the reset signal at first and then wait 5ms.Push it down for 5 ms to “wake
up” the chip and then send the data.For sending data, send low bits at first then high bits.Data bit duty cycle, the figure as
follows:
600us 200us
200us 600us
High:Low =1:3 means:0 High:Low =3:1 means:1
5.3、Three-line serial control
Three-line serial has three communication lines, such as chip select (/ CS), clock(CLK)and data (DATA).
The timing follows the standard SPI communication. Voice chip command control and voice playback can be
achieved through the three-line serial interface. P02 for the voice test port.
5.3.1、I / O port allocation table
pin
Package
P02 P03 P04 P05
WTV020-S K1 /CS CLK DATA
Note: K1 is for the voice test port . Low pulse trigger this key to play all of the voice address circularly. Users can test voice
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through this pin.
5.3.2、Order Code Description
Order Code define description
E0H~E7H Volume Control During the play or standby state, send such order code to adjust 16-level volume, E0H for
the minimum volume, EFH for the maximum volume
F2H loop Send this command to loop the current voice.
F3H Stop loop Send this command to stop loop the current voice.
FEH stop stop play the voice
Voice Address corresponding relationship
Data(Hex) Function
00 00H play the first voice phrase
00 01H play the second voice phrase
00 02H play the third voice phrase
…… ……
0C FDH paly the 3326th voice phrase
0C FEH paly the 3327th voice phrase
0C FFH paly the 3328th voice phrase
5.3.3、Control Timing
Send address data
At first send the reset signal, wait for 10ms and then send / CS. After 5ms ,send clock and data. Recommend use 300us for
the clock cycle. For address data,need send two bytes. Send low byte at first then high byte. For the data in a single byte, send
low bit at fist then high bit. After send the first byte,pull CS up to wait for 1ms, then send the second byte. For example,to trigger
the three-hundredth voice phrase, send 01H +2 CH. The detailed timing chart as below:
/RESET 5m s
/CS 10m s 1m s
CLK 5m s 5m s
DATA
D8 D 9 D10 D11 D12 D13 D14 D 15 D0 D1 D2 D3 D4 D5 D6 D7
BUSY
VOICE
Send control commands
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For control command,only need send one byte .
/CS
CLK 5m s
DATA
D0 D1 D2 D3 D4 D5 D6 D7
6、Typical application circuit
6.1、Key control PWM output application circuit
R1 470
VCC
1 /RESET VCC 16 LED
SPEAKER 2 DAC BUSY 15
3 PW M + P07 14 K1
4 PW M - P02 13
5 DI P03 12 K2
6 DO P04 11
7 CLK P05 10 K3
8 GN D CS 9
K4
W TV020-S
6.2、Key control DAC output application circuit
R1 470
VCC
1 /RESET VCC 16 LED
AMP 2 DAC BUSY 15
3 PW M + P07 14 K1
4 PW M - P02 13
5 DI P03 12 K2
6 DO P04 11
7 CLK P05 10 K3
8 GN D CS 9
K4
W TV020-S
6.3、One-line serial interface PWM output application circuit
VCC
1 /RESET VCC 16
2 DAC BUSY 15
SPEAKER 3 14
PW M + P07
4 PW M - P02 13 VDD
5 DI P03 12
6 DO P04 11 BUSY
7 CLK P05 10 DATA M CU
8 GND CS 9
W TV020-S
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6.4、One-line serial interface DAC output application circuit
VCC
1 /RESET VCC 16
AMP 2 DAC BUSY 15
3 PW M + P07 14
4 PW M - P02 13 VDD
5 DI P03 12
6 DO P04 11 BUSY
7 CLK P05 10 D ATA M CU
8 GN D CS 9
W TV020-S
6.5、Three-line serial interface PWM output application circuit
VCC
1 /RESET VCC 16
2 DAC BUSY 15 VDD
SPEAKER
3 PW M + P07 14
4 PW M - P02 13 BUSY
5 DI P03 12 /CS
6 DO P04 11 CLK M CU
7 CLK P05 10 DATA
8 GND CS 9
W TV020-S
6.6、Three-line serial interface DAC output application circuit
VCC
1 /RESET VCC 16
AMP 2 D AC BUSY 15 VDD
3 PW M + P07 14
4 PW M - P02 13 BUSY
5 DI P03 12 /CS
6 DO P04 11 CLK M CU
7 CLK P05 10 D ATA
8 GND CS 9
W TV020-S
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7、Package Dimension
Unit：mm
8、Version record
verision date discription
V1.0 2010-3-11 original version
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