Tenda TDB380 User Guide
TENDA ELECTRONICS LIMITED TDB380
Embedded MP3 Module
Model No.:TDB380
Datasheet V2.0
1. Product Features........................................................................................................... 2
2. Product Applications...................................................................................................... 2
3. Electrical Parameters .................................................................................................... 2
4. Pins and Operating Modes............................................................................................ 3
4.1. Pins Description .................................................................................................. 3
4.2 Operating Mode and settings ............................................................................... 4
4.2.1. MP3 Mode........................................................................................................ 5
4.2.2. Direct-Play Mode ............................................................................................. 6
4.2.3. Parallel Mode ................................................................................................... 8
4.2.4. Serial Mode...................................................................................................... 9
5. On-Board EEPROM .....................................................................................................11
6. Transfer files to SD Memory Card ................................................................................11
7. Versions ...................................................................................................................... 12
8. Contact and Support ................................................................................................... 13
Note : The functions descriptive in grey words in the datasheet are not valid now .
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TENDA ELECTRONICS LIMITED TDB380
1. Product Features
* Support mp3 files playing with stereo audio output
* Support normal mp3 player functions ( play, next, prev.,vol-,vol+,…..)
* With Parallel and Serial interface for MCU controlling
* Loop play function available
* Support one pushbutton play one mp3 file ,eight pushbuttons max.
* Easy to update the mp3 files by SD card reader connect to PC
* Wide power supply from 5V to 30V
* Select and play more than 3000 files by MCU via parallel or serial interface
* Support SD card from 32MB to 2GB
* Size with 51mm*33mm*8mm
* TF Card version also available with the same function but smaller size
* TF Card version size 51mm*21mm*8mm
2．Product Applications
Entertainment (MP3 music player , Sound box ,Background music system ,Game
Machine music system ,Kid Rider Music player, Talking Robot, High-Class Talking
Toys, ……)
Announcing system (Elevator announcer , Queue calling system ,Bus station
announcer ,advertsing system ,Warning system , Spots Voice Introducer ,Voice Tour
Guider, Machine Voice manual ,……
Home & Office Appliance (MP3 Door Bell ,Home anti-theft alarm system, Phone Switch
Board Music Player,Voice guide manual for home appliance,……)
And so on .
3. Electrical Parameters
Parameter Conditions Min. Typical Max. Unit
Operating voltage 6 12 24 V
Limited voltage 5 30 V
Standby current VDD=12V 50 mA
Operating current VDD=12V 100 mA
Audio power Max. volume 200 mVpp
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TENDA ELECTRONICS LIMITED TDB380
4. Pins and Operating Modes
4.1.Pins Description
Pin Name Pin No. Description Remark
P0 - P7 8 - 1 Date Ports / Trigger Input
PL 14 Trigger input
VOL+ 9 Button ,Vol+
VOL- 10
SCL 11 EEPROM CLK (I2C)
SDA 12 EEPROM DATA (I2C)
BUSY 13 Busy Low active LED : D2 on PCB
RXD 15 Serial Port ,Data Receive
TXD 16 Serial Port ,Data Transmit
HPR 17 Audio output R
HPL 18 Audio output L
GND 19 Power GND
VDD 20 Power Positive LED : D1 on PCB
Button，Vol-
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TENDA ELECTRONICS LIMITED TDB380
4.2 Operating Mode and settings
MP3 Mode : The module will work as a normal mp3 player with Play/Pause ,
Stop,Prev.,Next, FF 10 (Fast forward 10 songs),REW 10 (Rewind 10 songs), Vol+,Vol-
functions .
Direct-Play Mode: The module will play 8 files by 8 pushbuttons,Press one pushbutton
play the related MP3 file, Keep pressing the pushbutton for loop playing.
Parallel Mode: The module working under Parallel interface control via PL and P7-P0
pins.
Serial Mode: The module working under Serial interface control via TXD and RXD
All the functions of this module can be realized in Parallel and serial mode .
There are 4 operating Modes ( MP3 Mode,Direct-Play Mode, Parallel Mode, Serial Mode)
The Operating Mode settings
M1,M0 Operating Mode Priority Remark
0，0
0，1
1，0
1，1
Parallel Mode High
Direct- Play Mode Low
MP3 Mode Low
Serial Mode Highest
M0 and M1 points shown on above PCB
picture
“0”: Connect to GND
“1”: NC (Not connected)
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