DFPLayer Mini 1, Summary 11 Brief Instruction DFPLayer Mini module is a serial MP3 module provides the perfect integrated MP3, WMV hardware decoding. While the software supports TF card driver, supports FATI6, FAT32 file system. Through simple serial commands to specify music playing, as well as how to play music and other functions, without the cumbersome underlying operating, easy 10 use, stable and reliable are the most important features of this module. 1.2 .Features > Support Mp3 and WMV decoding Support sampling rate of 8KHz,11.02SKHz, |2KHz, 16KHz,22.0SKHz, 24KHz,32KHz,44.1KH2,48KHz, 24-bit DAC output, dynamic range support 90dB, SNR supports 854B, Supports FATI6, FAT32 file system, maximum support 32GB TF eard A variety of control modes, serial mode, AD key control mode ‘The broadcast language spots feature, you can pause the background musie being played Built-in 3W amplifier ‘The audio data is sorted by folder; supports up to 100 folders, each folder can be assigned to 1000 songs, 30 levels volume adjus a vvvVVy i ble, 10 levels FQ adjustable. ae -Application Car navigation voice broadcast Road transport inspectors, toll stations voice prompts Railway station, bus safety inspection voice prompts Electricity, communications, financial business hall voice prompts Vehicle into and out of the channel verify that the voice prompts ‘The public security border control channel voice prompts Multi-channel voice alarm or equipment operating guide voice ‘The electric tourist car safe driving voice notices Electromechanical equipment failure alarm, Fire alarm voice prompts VvVVVV VY o ‘The automatic broadcast equipment, regular broadcast. 2, Module Application Instruction 2.1, Specification Deseription Item Description 1, Support 11172-3 and ISO13813-3 layer3 audio decoding MP3Format 24 Support sampling rate (KHZ):8/11,025/12/16/22.05/24/32/44.1/48 3, Support Normal, Jazz, Classic, Pop. Rock ete UART Port | Standard Serial; TTL Level; Baud rate adjustable(default baud rate is 9600) Working Voltage DC3.2-5.0V; Type :DC4.2V Standby Current 20mA ‘emperature 40-370 Humidity 5% ~95% ‘Table 2.1 Specification Description| DFPLayer Mini 2.2 Pin Deseri Figure 2.1 No Pin Description Note 1 vec Tnput Voltage DC3.2-5.0V;Type: DCA2V 2 RX UART serial input 3 1 ART serial output 4 DACR ‘Audio output right channel Drive earphone and amplifier 5 DACL ‘Audio output left channel Drive earphone and amplifier 6 SPK2 Speaker Drive speaker less than 3W 7 GND Ground Power GND 8 SPKI Speakert Drive speaker less than 3W 8 101 Triggers part 1 Shor pres tnigley evens pene Peete 10 GND Ground Power GND " 102 -TnUerSeED Sonireavtopovacst Thngpnaria 2 ‘ADKEYI ‘AD Port] ‘Trigger play first segment 1B ADKEY2 AD Port? ‘Trigger play fifth segment 4 USB+ ‘USB DP USB Port 15 UsB- USB- DM USB Port 16 ‘BUSY Playing Status Low means playing High means.no ‘Table 2.2 Pin Description| DFPLayer Mini 3. Serial Communication Protocol Serial port as a common communication in the industrial control field, we conducted an industrial level of optimization, adding frame checksum, retransmission, error handling, and other measures to significantly strengthen the stability and reliability of communication, and can expansion more powerful RS485 for networking functions on this basis, serial communication baud rate can set as your own, the default baud rate is 9600 3.1, Serial Communication Format Support for asynchronous serial communication mode vie PC serial sending commands. Communication Standard:9600 bps Data bits :1 Checkout :none Flow Control :none Format: $8 VER Len CMD Feedback paral para2 cheeksum $O Each command feedback begin with S , thatis 8s Start byte OTE ae VER Version Version Information Len the number of bytes after “Len” Checksums are not counted 5 ; Tndicate the specific operations, such as play 7 MD Commands Dae Feedback ‘Cotmanhitteavecy Tfneed Tor Feedback, 1: feedback, 0: no feedback paral Parameter 1 Query high data byte para? Parameter 2 Query low data byte qa Giedisam: ‘Accumulation and verifieation [not include start bit $] $0 End bit End bit OxEF For example, if we specify play NORFLASH, you need to send: 7B FF 06 09 00 00 04 FF DD EF Data length is 6, which are 6 bytes [FF 06 09 60 00 04). Not counting the start, end, and verification, 3.2 Serial Communication Commands 1).Direetly send commands, no parameters returned MD Function Description Parameters(16 bit) x01 Next 0x02 Previous 0x03 Specily tracking(NUM) 0.2999 Ox04 Increase volume 0x05 Decrease volume 0x06 Specify volume 0-30 0x07 Specify BQ(O/1/2/3/4/5) Notmal/Pop/Rock/Jaz7/Classie/Base 0x08 Specify playback mode (0/1/2/3) | _ Repeav/folder repeat/single repeat! randomDFPLayer Mini Specify playback 0x09) soucelqineney U/TR/AUX/SLEEP/FLASH. Enter into standby — low power OXON Joss 0x08 Normal working oxoc Reset module ox0D Playback 0x0E Pause 0x0F Specify folder to playback 1-10(need to set by user) ra Vola baja we T:Open volume adjust } (DI: set volume gain 0-31 oxi Repeat play {start repeat play} {0:stop play} 2).Query the System Parameters 0x3D STAY Ox3E STAY ar Send initialization parameters | © O=0F(each Ei epreset one device of the os Lea an OxdT Reply 0x42 Query the current status 0x43 Query the current volume Oxd4 Query the current EQ 0x45 Query the current playback mode 0x46 Query the current software version 0x49 Query the ae of flash’ oxdB ‘Queries the current track of TF card Ox4D Queries the current track of Flash 3.3. Returned Data of Module 3.3.1. Returned Data of Modu Power~ 1).The module power on, require a certain of the time initialization, this time is determined by Usdisk, TF card, flash, etc. device's file numbers, general situation in the 1.5 38ec. [f module initialization data has not beenDFPLayer Mini sent out within the time, indicating that the module initialization error, please reset the module's power supply, and detect hardware connecting; 2).The module initialization data including online devices, such as sending 7E FF 06 3F 00 00 01 xx xc BF, DL. = 0x01 describe only the U-disk online during power-on, Other data are seen as the table below: T-bisk owing TERF 063° 0000 01m BF ech device we oF lationhip Tr Gad one TE FF 063° 00.0002 wx FF Fomine TE FF 063° 00 00 Ow BF FLASH one TE FF 063° 000008 mmx EF Ue RTF Cod TE FF 0637 00 00 03 8 EF 3).MCU will not send corresponding control commands until module initialization sending commands or the module will not process the commands sent by MCU, and will also affect the normal initialization of the modile. 3.3.2 Returned Data of Track Finished Playing U-Disk finish playback Ist track TE FF 06 3C 00 00 OL xx x BF U-Disk finish playback 2nd track | __7EFF 06 3C 09 00 02 xx xx BF ‘TF card finish playback Ist track | 7H FF 06 3D 00 00 01 xx xx EF TF card Tinish playback 2nd GREROa BD Dbi60 Olax EP track’ Flash finish playback Ist track TE FF 06 3E 00 00 OL xx xx EF Flash finish playback 2nd track | 7E FF 06 3E 00 00 02 x6 xx EF L.The module will enter into pause status automatically after being specified playing, if customers need such application, they can specify track to play ,the module will enter into pause status after finishing playing and wait for the commands sent by MCU. 2 In addition, we opened a dedicated /O as decoding and pausing status indication, See Pin 16, Busy 1).Output high level at playback status; 2),Output low level at pause status and modulle sleep; 3. For continuous playback applications, it can be achieved as below, if it finishes the first tracking of the ‘TF card, it will return TE FF 06 3D 00 00 01 xx xx EF 3D ---- U-disk command 00 01 ---- expressed finished playing tracks. If the external MCU receives this command, please wait 100ms. And then sending the playback command [7E FF 06 0D 00 00 00 FF BE FF], because inside the module it will first initialize the next track information, In this ease, the module can be played continuously. 4, If the currently finish playing the first song, the track pointer automatically point to second song, If you send a "play the next one” commend, then the module will playback the third song. And, if the module finishes playing the last one, the player will automatically jump to the first pointer, and pause. 5, After specifying device, the module play pointer will point to device root directory of the first track, and enters the pause state, and wait MCU sending track playing command. 3.3.3 Returned Data of Module RespondsDFPLayer Mini FLASH finish play the 1* track TE FF 06 3E 00 00 01 xx xx EF 1). in order to strengthen the stability of the data communication, we have increased response processing: ACKB byte is set whether need to reply to response. So that to ensure each communication get handshake signals, whieh will indicate the module has been successfully received data sent by the MCU and process immediately. 2).For general applications, customers can freely choose, without this response processing is also ok. 3.3.4 Returned Data of Module Error Module is busy TE FF 06 40 00 00 00 xx xx EF A frame data are not all received TE FF 06 40 00 00 01 xx xx EF Verification error TE FF 06 40 00 00 02 xx xx EF 1). In order to strengthen the stability of the data communication, we added data error handling, mechanism. Module will responds information after receiving error data format; 2), In the case of relatively harsh environment, it is strongly recommended that customers process this command. If the application environment in general, you no need handle it; 3).The module returns busy, basically when module power-on initialization will return, because the modules need to initialize the file system. 3.3.5. Push-in and Pull-out information of Device Push in U-disk 7B FF 06 3A 00 00 01 x xx EF Push in TF card TE FF 06 3A 00 00 02 xx xx EF Pull out U-disk TE FF 06 3B 00 00 01 xx xx EF Pull out TF card TE FF 06 3B 00 00 02 xx xx EF 1).For the flexibility of the module, we particularly add command feedback of push-in and pull-out device. Let user know the working status of the module. 2).When push-in device, we default playback the first track of device root directory as audition, if users do not need this feature, you can wait 100ms after receiving the message of push —in serial device ,and then send pause command. 3.4 Serial Commands 3.4.1. Commands of Specify Track Play Our instructions are given in support of the specified track is playing, the song selection ranges from 0 to 2999, Actually can support more, because it involves the reasons to the file system, support for the song too much, it will cause the system to operate slowly, and usually the application does not need to support so many files. If the customer has unconventional applications, please communicate with us in advance. 1),For example, select the frst song played, serial transmission section: 7E FF 06 03 00 00 01 FF E6 EF START command ‘Version Information - Data length (not including parity) epresentative No need to acknowledge [Ox01: need answering, 0x00: do not need to return the response] ‘Tracks high byte [DH] fracks low byte [DL], represented here is the first song played Checksum high byte Checksum low byte End Command| DFPLayer Mini 2).For selections, if choose the 100th song, first convert 100 to hexadecimal, the default is double-byte, it is 0x0064, DH = 0x00; DL = 0x64 3).L£ you choose to play the 1000th, first convert 1000 to hexadecimal, the default is double-byte, it is Ox03E8 DH = 0x03; DL = OxEs 4).And so on (o the other operations, as in the embedded area in hexadecimal is the most convenient method of operating. 3.4.2 Commands of Specify Volume 1). Our system power-on default volume is 30, if you want to set the volume, then directly send the corresponding commands. 2).For example, specify the volume to 15, serial port to send commands: 7B FF 06 06 00 00 OF FF DS EF 3).DH = 0x00; DL = OX0F, 15 is converted to hexadecimal Ox000F, can refer to the instructions of playing track section. 3.4.3 Specify Device Play 1).The module default support four types of playback devices, the device must be on line, so it can specify playback. The software will automatically detect without user attention. 2).Refer the table as below to select the appropriate command to send 3).Module will automatically enter the Suspend state after the specified device, waiting for the user to specify @ track playing. It will take about 200ms from specifying device to the module initialize file information, Please wait for 200ms and then send the specified track command. ‘Specify playback device =U-disk TE FF 06 09 00 00 01 xx xx EF Verification ‘Specify playback device -TF Card TE_FF 06 09 00 00 02 xx xx EF ‘Specify playback device -SLEEP TE FF 06 09 00 00 05 xx xx EF 3.4.4. Specify File to Play Specify folder 01 of 001 .amp3 7E FF 06 OF 00.01 01 xx xx BF Specify folder 11 of 100.mp3 7E FF 06 OF 00 0B 64 xx xx EF Specify folder 99 of 255.mp3 ‘TE FF 06 OF 00 63 FF xx xx EF T) Specify the folder playback is developed extensions, default folders are named as "OI", "11" in this, way because our module does not support Chinese characters identify the name of the folder name, in order to stabilize the system switching speeds and songs under each folder default maximum support up to 255 songs, up to 99 folders classification, if customers have special requirements, they need to classify according to the English name, we also can be achieved, but name only is "GUSHI", "ERGE" and other English name. 2).For example, specify "01" folder 100.MP3 file, serial port to send commands : 7E FF 06 OF 00 01 64 XX xX EF DH: represents the name of the folder, the default support for 99 documents become 01 - 99 named DL: on behalf of the tracks, the default maximum of 255 songs that 0x01 ~ OxFF Please refer to the above set rules for setting tracks 3)to the standard of the module, you must specify both the folder and file name, to lock a file. Individually specified folder or specify the file name alone is also possible, but the document management will be worse. 4).The following diagram illustrates both the folders and file names are specified.| DFPLayer Mini up 2014/4/9 15:03 a folder name reference 2014/4/9 15:00 a 4/4/9 15:00 2014/49 15:00 Figure 3.1folder name 2014/4/9 15:02 MP3 2014/4/9 15:03 2014/4/9 15:03 MP3 ER file name reference Figure 3.2 file name 3.5. Key Ports We use the AD module keys, instead of the traditional method of matrix keyboard connection, itis to take advantage of increasingly powerful MCU AD functionality, Our module default configuration 2 AD port, 20 key resistance distribution, if used in strong electromagnetic interference or strong inductive, capacitive load of the occasion, please refer to our "Notes." 1)Refer diagram ape RI oe py ade apes 20 oe RE seamen [tom vane | [Be too BE paris | ere ee | [ee seamen | [x pase a ee [ee eves [ee a seem 0 | [ie i ewas | re | [ ox us | [ee oe scenes | [ex seems | oa | [ee teen | [ee x semen | Lee af Lex somes | ox Figure 3.3 ad key refer 2)x_20 fumetion keys allocation table Key Short Push Long Push Description KI Play Mode Switch to interrupt / non interrupted 2 _| Playback device switches UMTFISPISIeep KS Operating Mode All eyele Ka Play/Pause KS Previous Volt K6 Next Vor "7 3 Ray aa pueclaaya weperyy KS 3 Repeatiplay Long push always to repeat play tracking 3DFPLayer Mini Ko 2 vee? ‘Long push always to repeat play xci0 1 Repeat iy Tong posh avapro epee pay KI 5 ae ‘Long push always to repeat play KI2 6 ‘eee ‘Long push always to repeat play KG 7 Repestplay ‘Long push always to repeat play KI 8 ee ‘Long push always to repeat play KIS 9 Tes Long push always to repeat play K16 10 Ey Long push always to repeat play KIT u boon ‘Long push always to repeat play KIS 12 pened Long push always to repeat play KI9 B tee ‘Long push always to repeat play K20 4 Repeat play “Teil iad always to repeat play 4y Application Circuit 4.1 Serial Communication Connect ‘Module's serial port is 3.3V TTL level, so the default interface level is 3.3V. If the MCU system is 5V. It is recommended connect a IK resistor in series. veegssy srote Figure 4.1 Serial Connect (3. 3V)DFPLayer Mini Figure 4.2 Serial Connect (v) 4.2. Other Refer Diagram Seamer s Seenemt Neat Vole Figure 4.3 headset connect module ‘Between the headset and the module can string a 100R resistor, make a limiting Seaman Segmeatt Figure 4.4 speaker connect moduleDFPLayer Mini “Ce wee a le ee oc im Insts = so » & oo Figure 4.5 Ad key connect refer 5, MP3-TF-16P Size (unit: mm) Figure 5.1 peb size| DFPLayer Mini 6, Note* 1/0 Input Specification Item Description Min Type | Max | Unit | ‘Test Condition vi. | Low-Level input Voltage 03 = | osevon | v | vonsav VX | High-Level Input Voltage | o7vvp | - | vppio3s | v | vypp=3av VO Output Specification tem Description Min type | Max | Unit | Test Condition VOL | Low-Level Output Voltage . = 033 v | vopaav VOR | High-Level Output Vottage | 2.7 : t v | vopsav 1, The module's external interfaces are 3.3V TTL level, so please note the level conversion during the hardware circuit design, also in strong interference environment, electromagnetic compatibility note some protective measures, GPIO using opt coupler isolation, inereasing TVS ete. 2, ADKEY key values are in accordance with the general use of the environment, if the strong inductive or capacitive load environment, please note that the module power supply is recommended to use a separate isolated power supply, another matched beads and inductors for power filtering, we must ensure that the input power as much as possible the stability and clean, If you really can not be guaranteed, please contact us to reduce the number of keys to redefine wider voltage distribution, 3, For general Serial communication, please pay attention to level conversion. If strong interference environment, or long distance RS485 applications, then please note that signal isolation, in strict accordance with industry standard design communication circuits.