BBK V7N, V7H service manual

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Page 1

V7N V7H

service manual

Page 2

Catalog

Chapter One About Maintenance

1.1 Safety precautions

1.1.1 Precautions for antistatic

1.1.2 About placement position

1.2 Maintenance method

1.2.1 Visualized method

1.2.2 Electric resistance method

1.2.3 Voltage method

1.2.4 Current method

1.2.5 Cutting method

1.2.6 Element substitution method

1.2.7 Comparison method

1.3 Required device for maintenance

Chapter Two Functions and Operation Instructions

2.1 QUICK OPERATION

2.1.1 BUTTONS AND JACKS ILLUSTRATION

2.1.2 POWER ON/OFF

2.1.3 PLAY MUSIC

2.1.4 VIDEO PLAYING

2.1.5 PICTURE BROWSING

2.1.6 E-BOOK BROWSING

2.1.7 RECORDING

2.1.8 TUNING

2.1.9 RESUME PLAYING

2.1.10 RESET

2.1.11 CHARGE

2.2 USAGE INTRODUCTION

2.2.1 MAIN MENU ILLUSTRATION

2.2.2 PLAYING INTERFACE

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2.2.3 RECORDING INTERFACE

2.2.4 TUNING INTERFACE

2.2.5 USE MOBILE STORAGE

2.2.6 DISCONNECT USB SAFELY

2.2.7 VIDEO CONVERSION TOO

2.3 OTHER INFORMATION

2.3.1 ADDITIONAL INFORMATION

2.4 SPECIFICATION

Chapter Three Principle and Servicing

Section one Principle of the player

3.1.1 Block diagram of the player

3.1.2 Principle of the player

Section Two Unit circuit principle

3.2.1 Video decode circuit principle

3.2.2 Audio decode circuit principle

3.2.3 FLASH CIRCUIT PRINCIPLE

3.2.4 FM tuning circuit

3.2.5 Display screen boost circuit

3.2.6 Headphone output jack circuit

3.2.7 USB jack ciircuit

3.2.8 Button circuit

3.2.9 charge management circuit

3.2.10 Battery voltage detect circuit

3.2.11 Battery protection circuit

3.2.12 power management module

3.2.13 Reset circuit

3.2.14 Power on/off control circuit

3.2.15 MIC circuit

Section Three Servicing Cases

3.3.1 Troubleshooting diagram

3.3.2 servicing cases

Section Four Signal waveform diagram

Section Five Function Introduction to IC

3.5.1 Function introduction to HY57V641620E

3.5.2 Function introduction to Rk2608

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3.5.3 Function introduction to RT9284B

3.5.4 Function introduction to MCP73832

3.5.5 Function introduction to TEA5767HN

3.5.6 Function introduction to XC6206P152MR

3.5.7 Function introduction to K9G8G08U0M

Chapter Four Assembly and disassembly process

4.1 Disassembly process of the player

4.2 Assembly process of the player

Chapter CinquePCB board & Circuit diagram

Section One Circuit diagram

Section Two PCBboard

Surface layer of Main Board

Bottom layer of Main Board

Chapter six BOM List

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Chapter One About Maintenance

1.1 Safety precautions

1.1.1 Precautions for antistatic

Movement and friction will both bring static electricity which causes serious damages to integrated

IC. Though static charge is little, when a limited quantity of electric charge is added to large-

scaleintegrated IC, as the capacitance is very small in the meantime, now the integrated IC is very much

easy to be struck through by static electricity or the performance will decrease. Thus static electricity

prevention is of extraordinary importance. The following are several measures to prevent static

electricity:

1. Use a piece of electric conduction metal with the length of about 2 metres to insert into the earth,

and Fetch the lead wire from the top of the surplus metal and connect to the required static electricity

device. The length and depth of the metal embedded under the earth should be determined according to

the wettability of the local soil. For humid places, it may be shorter, and longer and deeper for dry places.

If possible, it can be distributed and layed in terms of “#” shape.

2. On operating table-board, the antistatic table cushion should be covered and grounded.

3. All devices and equipments should be placed on the antistatic table cushion and grounded.

4. Maintenance personnel should wear antistatic wrist ring which should be grounded.

5. Places around the operating position should also be covered with electric conduction cushion or

Painted with antistatic paint.

1.1.2 About placement position

1. Audio power amplifier cannot be installed in places with high temperature and humidity.

2. Positions for placement should be stable and secure.

1.2 Maintenance method

1.2.1 Visualized method

Directly view whether abnormalities of collision, lack of element, joint welding, shedding welding,

rosin joint, copper foil turning up, lead wire disconnection and elements burning up among pins of

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Elements appear. Check power supply of the machine and then use hands to touch the casing of part of

elements and check whether they are hot to judge the trouble spot. You should pay more attention when

using this method to check in high voltage parts.

1.2.2 Electric resistance method

Set the multimeter in resistance position and test whether the numerical value of resistance of each

point in the circuit has difference from the normal value to judge the trouble spot. But in the circuit the

tested numerical value of resistance is not accurate, and the tested numerical value of integrated IC's

pins can only be used for reference, so the elements should be broken down for test.

1.2.3 Voltage method

Voltage method is relatively convenient, quick and accurate. Set the multimeter in voltage position

and test power supply voltage of the player and voltage of a certain point to judge the trouble spot

according to the tested voltage variation.

1.2.4 Current method

Set the multimeter in current position and test current of the player of a certain point to judge the

trouble spot. But when testing in current method, the multimeter should be series connected in the

circuit, which makes this method too trivial and troublesome, so it is less frequently used in reality.

1.2.5 Cutting method

Cutting method should be combined with electric resistance method and voltage method to use.

This method is mainly used in phenomena of short circuit and current leakage of the circuit. When

cutting the input terminal voltage of a certain level, if voltage of the player rises again, it means that the

trouble lies in this level.

1.2.6 Element substitution method

When some elements cannot be judged good or bad, substitution method may de adopted directly.

1.2.7 Comparison method

A same good PC board is usually used to test the correct voltage and waveform. Compared these

data with those tested through fault PC board, the cause of troubles may be found.

Through the above maintenance method, theoretical knowledge and maintenance experience, all

difficulties and troubles will be readily solved.

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1.3 Required device for maintenance

Audio Generator

Digital oscillograph ( 100MHE)

SMD rework station

Multimeter

Soldering iron

Pointed-month pincers

Cutting nippers

Forceps

Electric screw driver

Terminals connecting cord

Headphone

Microphone

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Chapter Two

Functions and Operation Instructions

2.1 QUICK OPERATION

2.1.1 BUTTONS AND JACKS ILLUSTRATION

Press in power-off state

Press for long in power-on state

Press in playing interface

Press when recording

Press when tuning

#Press when in menu operation

#Press when recording #Press when in music playing, tuning, e-book browsing, picture browsing and recording preparation interface #Press for long when in music playing interface #Press for long when in file browsing interface #Press when in file browsing interface #Press when in menu operation

#Press when playing or tuning #Press when in "My sound effect setting" #

Press when browsing e-book

#Press when in menu operation

Press when playing

Press for long when playing

Press when in tuning preset state

Press when in tuning search state

power on power off pause/play switch pause recording mute enter the item or confirm the setting save record files

On-line menu pops up A-B repeat delete file return to the previous directory Not save the setting and then exit from menu adjust volume adjust dB value

turn lines

move cursor

the previous/next track fast backward/forward select channel auto search

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Press for long when in tuning search state

Press when in "My sound effect setting"

Press when browsing picture

# #Press when browsing e-book

Press when in menu operation

USB jack

automanual search select the frequency that you want to set switch pictures turn pages move cursor

Headphone jack

MIC: microphone

2.1.2 POWER ON/OFF

#Power on

Press button to power on, the

PUSH

power-on motion picture displays and system enters main menu.

NOTE:

If functions of playing, tuning or recording are not used during a specified period, this player will power off automatically.

#Power off

PUSH FOR LONG

Push button for long to power off.

2.1.3 PLAY MUSIC

#Play/Pause

#FF and FB

When playing music, pushing this button may switch between "Play" and "Pause".

When playing music, press this button for long and you may enter fast forward or backward playback.

#NEXT and PREV

When playing music, press this

button to skip to the previous or next track.

# Adjust volume

When playing music, press this button or for long and you may adjust volume.

#Play music

In "Music playing" menu, press button to enter Interface of browsing musical files. Press button to select songs and press button to begin playing this song. When playing music, pushing

button may pause music playing, press button to return to the previous directory and press button to exit and enter main menu interface.

PRESS

CAUTION

#When the length of song's full path name is too long, this song may probably not be played. #When playing music, use picture browsing functions and music will stop playing.

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2.1.4 VIDEO PLAYING

In main interface, select "Video playing" item and press button to enter. After selecting movie files through pressing button, press button to play movie and press button to pause. When playing, pressing button may skip to the previous or next movie, pressing button for long to enter fast forward/backward; pressing button to adjust volume and pressing button may return to the previous directory.

PRESS

NOTE:

If some e-book format is not supportable, please switch to TXT file with ANSI encoding format.

#Switch of ANSI encoding format

PRESS

NOTE:

As for movie files with large capacity, you need wait for several seconds to enter playing after pressing button.

2.1.5 PICTURE BROWSING

After selecting picture file, press button to

enter picture browsing, press button to switch pictures and press button to return to the previous directory.

PRESS

When browsing picture, press button to enter "On-line menu". In on-line menu, you may set slide, rotate leftwards, rotate rightwards and rotate 180 . Press button to enter "Slide"; after pressing button to select your desired slide interval time, press button to confirm. After pressing button to exit from on-line menu, pictures will be played in the means of slide.

2.1.6 E-BOOK BROWSING

After entering "E-book" item, press button to select text file and press button to browse e-book. Pressing button may turn pages; pressing button may turn lines and pressing button may enter on-line menu. When browsing e-book, press button to return to the previous directory.

1. Select "Save" in "File" item.

2. After dialogue box pops up, select "ANSI" in the pop-up options of encoding and then click "Save".

2.1.7 RECORDING

In main menu, select "Record" item and press button to enter recording preparation stage. Press button to enter recording/ pause recording. When recording, pressing button may generate recording files and exit to recording preparation state. Press button to save recording files and exit to main menu. Recording files are saved in "RECORDER" file folder of "Music Playing" menu.

CAUTION:

#In order to avoid sudden power-off in the

# When recording with microphone, if you press

PRESS

course of recording, you cannot record when battery is low and when disc is fully written; if recording is in process, it indicates “FULL DISC” and exits from recording.

buttons and the sound of pressing may probably be recorded.

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2.1.8 TUNING

PRESS

In main menu, select "Radio " item and Press button to enter tuning mode. Now, insert headphone and you may listen to radio program. After entering tuning mode, pressing button may enter "On-line menu". Press button to exit from tuning interface and enter main menu, but tuning still proceeds.

2.1.9 RESUME PLAYING

In main menu, after selecting "Resume playing" item, press button to enter. In this menu, you may select "Music resume", "Movie resume" and "E-book resume". For instance, select "Music resume" option, after

Pressing button, this song begins

playing from the position where playing stopped last time.

PRESS

CAUTION:

When charging, the player body is slightly hot,

and this belongs to normal phenomenon, so please take it easy to use it.

When electric charge of battery is too low, and

when USB power supply is less than 100mA, it begins to charge, screen may probably have no display, and even battery charge is

unavailable. #It takes 3 hours to charge battery with computer . #Before unplugging USB line, please stop using

USB memory function firstly. Data may be lost or the player may be damaged if you unplug it directly.

2.2 USAGE INTRODUCTION

2.2.1 MAIN MENU ILLUSTRATION

#Play music Save audio files.

#Browse picture

Save picture files.

#Record Select “Record” to enter recording mode.

Setup

Select "Setup" item to set system options.

2.1.10 RESET

When this player cannot be operated, please reset it. Method for reset: press button for about 10 seconds. After reset finishes, power on again and you may use it normally.

2.1.11 CHARGE

This player adopts lithium-ion battery to supply power. In any case, connect MP4 player to computer with USB line, it will power on and begin to charge automatically. After fully charged, the player will stop charging automatically.

Video

Save video files.

#E-book

Save text files.

#FM Radio

Select to enter radio mode.

#Resume playing

Play from the position where the music, movie and e-book stopped last time.

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2.2.2 PLAYING INTERFACE ILLUSTRATION

1. Song name

2. Song name/singer/lyrics display

3. Volume

4. Current playback time

5. Total track time

6. Playback progress bar

7. Playback state

8. Bit rate

9.Sampling rate

10. EQ mode

11. Playback mode

12. Music file format

13. Battery capacity

14. Current track serial number

15. total track number

2.2.3 RECORDING INTERFACE ILLUSTRATION

1.Name of recorded file

2. Time that has been recorded

As for the name of recorded file “V00001. Wav”: 00001 is serial number of the current recorded track and arranged according to sequence; WAV is the file format after recording.

2.2.4 TUNING INTERFACE

3.The left recordable time

4. Battery capacity

ILLUSTRATION

1. Volume

2. Frequency of the current radio station

3. Scanning progress bar

4. Radio station serial number

5.Preset mode

6.Battery capacity

7.Scanning mode

2.2.5 USE MOBILE STORAGE

FUNCTION

This player may be used as mobile storage in

Windows ME/2000/XP operating system. Under Windows 98SE operating system, the player may be used as mobile storage after drive program is being installed (please download it from BBK official website).

Connect MP3 player and computer with USB transmission line. After the bottom right corner of desktop appears “ ”symbol, the mobile storage function of MP3 player may be used normally.

NOTES:

#To avoid abnormality of the player appears, you

are suggested to power off firstly before connecting MP4 player with computer, and then use USB transmission line to connect Mp4 player, then connect computer.

#In Windows 98 system, there is no “ ”

symbol.

2.2.6 DISCONNECT USB SAFELY

After operation finishes, click “ ” symbol on bottom right corner of Windows desktop with right button of mouse, and disconnect USB safely according to the computer prompt.

2.2.7 VIDEO CONVERSION TOO

1. Brief introduction before use, please download video conversion tool and installation program “BBK MINIMP4 conversion tool” from BBK website and then install to computer.

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2. Basic operation

1) After program runs, click “Add conversion file” button on the bottom left corner and a dialogue box pops up, shown in the following figure:

2) According to the position indicated by finger, click to select the source file required to converse and the saving target path of new file after conversing. Click "Save" button to add this conversion into conversion list. Multiple conversion tasks may be added.

2.4 SPECIFICATION

Model

Lithium battery

Continuous playback time

Size/weight

Audio SNR

Headphone output

Frequency range

FM tuning range

Working temperature

Audio file

Picture file

#Design and specifications of product are

subject to change without notice.

3.7V 600mAh

Longest continuous playing time for MP3 is 11 hours

Size: 85.0mm 43.5mm 12.3mm weight: 54g

85dB

5mW+5mW 32 ohm (10mW+10mW when headphone impedance is 16-ohm)

18Hz~20kHz

87MHz~108MHz

0 C~35 C

MPEG 1/2 Layer 3(32kbps~320kbps), WMA(32kbps~320kbps), WAV

Support DCF standard JPEG format, 6~8 million pixel at most is supportable, BMP

3) Click "Begin to converse file" button to start conversing, shown in the above figure:

2.3 OTHER INFORMATION

2.3.1 ADDITIONAL INFORMATION

#Longest playing time

When playing MP3 musical files with 128kbps bit rate and 44.1kHz sampling rate in sate of proper volume, "Normal"sound effect and screen saver, the longest playing time of this player is about 11 hours . Playing time in other cases will be different.

#Accessories

1)Headphone

2)User manual

3)USB transmission line4)Warranty card

5)Hanging strip

6)Protection case #The lowest computer configuration Requirements

1)Above Windows98SE/2000/XP/ME,Mac8.5

2)Pentium 200MHz centre processor or above

3)CD-ROM drive

4)40MB spare hard disc space

5)32MB memory

6)USB jack

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Chapter Three Principle and Servicing

Section one Principle of the player

3.1.1 Block diagram of the player

Block diagram of the player is shown in the picture 3.1.1.1:

V7 Block Diagram

USB POWER

ADAPTOR POWER

CHARGE

MANAGEMENT

USB INTERFACE

24M CRYSTAL

LI-ION BETTERY

HEADPHONE

MICROPHONE

3.3V

1.8V

SDRAM

BUILT-IN LDO

CIRSUIT

BUILT-IN DC-DC

CIRCUIT

AUDIO&VEDIO CODEC

FLASH MEMORY

QVGA LCD

LDO BACKLIGHT

RT9284

SWITCH CIRCUIT

RK2606

RESET CIRCUIT

BUTTON ARRAY

FM MODULE

TEA5767

Figure 3.1.1.1 Block diagram of the player

3.1.2 Principle of the player

V7 portable MP4 player is mainly composed of following functional modules :

1. Decode parts : main decode chip adopts Rk2606 of Rockchip company with built-in ROM and

RAM, which can directly drive TFT LCD screen;

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2. Lithium battery part: composed of lithium battery and charge managing circuit, which supply

power for the player.

3. Periphery interface periphery interface is composed of earphone output, MIC input and USB

interface. Earphone interface is the audio output interface of the player, MIC is audio input of periphery

recording, USB jack finishes internal and external data switch of the player to realize charge function.

4. Data storage module: composed of Flash and periphery circuit to fulfill data storage of the player.

5.Display module:1.8 inch high-bright LCD screen.

6. Tuning module: FM tuning.

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Section Two Unit circuit principle

3.2.1 Video decode circuit principle:

Video decode circuit is mainly composed of main decode chipRK2606,SDRAM and peripheral circuit.RK2606

can realize MPEG-4 format in low frequency and power consumption with clear and smooth picture. Meanwhile,

Rk2606 integrates large amounts of I/O control jacks which may provide a max flexibility. Internal principle block

diagram of RK2606 is shown in picture3.2.1.1

Figure 3.2.1.1 Internal principle block diagram of Rk2608

Figure 3.2.1.1 Internal principle block diagram of Rk2606

1.Video decode circuit is mainly composed of main decode chipRK2606,SDRAM and peripheral

circuit.RK2606 can realize MPEG-4 format in low frequency and power consumption with clear and

smooth picture. Meanwhile, Rk2606 integrates large amounts of I/O control jacks which may provide a

max flexibility. Internal principle block diagram of RK2606 is shown in picture3.2.1.1. Low power

consumption function of Rk2606 can prolong battery usage time for portable player and its integrated

lithium battery charger supports voltage control (AVC) and its integrated power management unit

includes a DC-CD switch on high effective plate, which support ,multiple battery configuration, such as

1×AA,1×AAA, Li-ion battery. What is more, compared with traditional voltage control system, AVC

enables chip to operate with higher peak value CPU working frequency to make the highest running

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speed up to 100 MIPS. Rk2606 supports DRM 10 digital copyrght management technology based on

Microsoft.. Rk2606 has multi-mission dealing function, which can realize functions that listening to

music when viewing e-book or playing e-games. Rk2606 chip integrates USB 2.0 High Speed/Full

Speed PHY, which realizes a faster transmission speed. It also integrates controller that supports

TFT/CSTN/OLED colourful screen.

2.When the player power on, reset circuit keeps high level reset signal. After Rk2606 completes

reset through reset pin 115, reset signals output from pin 43 to enable end of Rt9284 to make boost

circuit work and the screen is lighten. Meanwhile, 1.8Vand3.3V circuit begin to output, 24M crystal

oscillator Y1 oscillates and decode chip begins to work and read data saved in Flash. After Rk2606

decoding, video signals are sent to LCD display screen to display.

3.2.2 Audio decode circuit principle

Audio decode chip is mainly composed of main decode chip Rk2606 internal audio decode CODEC

and periphery circuit. RK2606 internal CODEC adopts I2C bus controlling format. After the audio files

inside FLASF being processed through DSP, audio signals are sent to RK2606 internal audio decode

CODEC to decode and output from pin 75, 80 of Rk2606 and output from earphone jack at last.

When the machine is recording, external analog audio signals are sent to pin 70 of Rk2606 through

microphone. After processed by Rk2606 internal audio decode CODEC and conversed through AD

conversion unit, the digital audio signals are saved in FLASH.

When the machine is in FM mode, FM digital audio signals input from pin68,69 of Rk2606 and

directly output to earphone OUTPUT pin interface after digital filter and echo process.

3.2.3 FLASH CIRCUIT PRINCIPLE

1.FLASH circuit is shown in picture 3.2.3.1

VCC

R37 47K

VCC

R38 47K

FCE0 FCE1

C63 104

GND

R39 10K

RD/BY

FREN

FCLE/A2

FALE/RS/A1

FWEN FWP

R49 47K

D_GND

RES#

R/B2

R/B1

CE1

CE2

VCC

VSS

CLE

ALE

NAND FLASH

NC NC NC

NC I/O7 I/O6 I/O5 I/O4

PRE VCC

VSS

NC I/O3 I/O2 I/O1 I/O0

48 47 46 45 44 43 42 41 40 39

R43 0R

38 37 36 35 34 33 32 31 30 29 28 27 26 25

D7 D6 D5 D4

VCC

C64 104

D_GND

D3 D2 D1 D0

Figure 3.2.3.1 Flash circuit principle

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2. Working principle:Flash Memory is the storage unit of the whole player, all the AV and image files

are saved in FLASH. FLASH modules are composed of two groups FLASH chip K9G8G08U0M with the

specification2G H model is4G .Flash chip and main decode Rk2606 are connected through eight

data lines to complete the read, write and delete works. VCC provides 3.3V voltage for FLASH working.

R37,R38 is pull-up resistor of /CE and R49 is pull-down resistor of /WP. VCC is power supply pin of

FLASH. /CE is chip selection signal, effective when in high level. VCC supplies 3.3V voltage and FLASH

begins to work. /RE /WE are read-effective and write-effective signal ports to control read and write

function of FLASH.I/O1 I/O8 are eight data lines to complete external data exchange of FLASH and

realize function of write, delete and edit of Mp3.

There is firmware of the player’s working in Flash, all tasks are completed by CPU to send relevent

order after data exchange between CPU and Flash. When the player power on,3.3V voltage supplies

power for Flash through VCC. /CE inputs 3.3V high level signals and Flash begins an effective work.

When playing AV files,/RE is high level, Flash performs the operation of read out. When files are written

through USB data line or recording through microphone, /WE is in high level and Flash performs the

operation of write in. The operation of read out and writing in are performs through I/O1 I/O8 eight

data/address line.

3.2.4 FM tuning circuit

1.FM tuning circuit is shown in picture 3.2.4.1:

2. Working principle: tuning circuit is composed of mini digital tuning IC TEA5767 of Philips and

peripheral circuit. C68, C69, C70, C71 and L21 input matching circuit for antenna of FM module; Varicap

diode D3, D4 and winding inductor L22, L23 is frequency selection tuning circuit in FM module. The

control of FM adopts two-line IIC bus method and 9, 10 of TEA5767 are date and control line.

When Mp3 player switches into FM tuning state, antenna is sent to RF band-pass filter (87.6MHz

108MHz and 76MHz 87.5MHz) composed of L21, C69, C71 through C68 coupling and then to pin 35,

37 of TEA5767 for amplifying inside TEA5767. Pin 2, 3, 4 of TEA5767 is connected with internal VCO,

and connected with diode D3, D4 externally. Pin 2 is tuning voltage output pin and voltage changes in

1V when in auto search. VCO power supply is sent to pin 5 of TEA5767 by FM 3V3 through R56 limit and

C81 filter. The built-in I2C jack is controlled through pin 8, 9 of TEA5767 and CPU performs operations

of channel search and selection through I2C bus. Digital power supply is sent to pin 7 of TEA5767 by FM

3V3 throughR58 limit, C90 filter. XT1 32.768 produces basic clock of 32.768 and inputs to TEA5767

from pin 17. Analog audio signals after processed by TEA5767 output to rear stage power amplifying

from 23 (right channel), 22( left channel ) and then output through earphone jack.

3.2.5 Display screen boost circuit

1.Display screen boosts circuit is shown in picture 3.2.5.1

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FM_3V3

R56 22R

C81 104

FM_ANT

FM_3V3

SGND

FM_ANT

L22 33nH 2%

L23 33nH 2%

C68 101

C78 103

R58 22R

BB202

FM_3V3

SGND

C90 104

L21 120nH

C69 27PF

SGND

C71 47PF

R70 100K

SGND

R68 10K

C65 393

L27 601 DCR<350m

L28

C70 472

N.C

CPOP

VCOT1

VCOT2

VCOVCC

DGND

DVCC

DATA

CLOCK

N.C

SGND

601 DCR<350m

N.C

W/R11BUSM12BUSEN13SWP114SWP215XTAL116XTAL217PDLF18PHLF19N.C

RFI2

TCAGC

RFGND

LOOPSW

TEA5767HN

NECTAR-I

FM_3V3

I2C_SCL

I2C_SDA

RFI1

AVCC

AGND

R52 18K

N.C

IFGAI

DIFL2 DIFL1

TCIFC

VREF MPXO

TMUTE

RAVO

LAVO

C72 475/X5R

N.C

R51 10R

C73 473

C74 473

C75 473

C77 333

SGND

30 29 28 27 26 25 24 23 22 21

32.768KHz

L24

L25

XT1

C79 333

601 DCR<350m

C85 102

SGND

C87 22PF

SGND

C80 105

C82 105

SGNDSGND

R57 33K

C88 223

SGND

FM_OUTR

FM_OUTL

C86 223

SGND

C89 102

L18 601/0603

C52

106/X5R

BACK_EN

Figure 3.2.4.1 FM module circuit diagram

R30 100R

R33 10K

L19

CDRH3D16-100

VCC

OVP

GND

RT9284B

MBR0520/SOD123

Figure 3.2.5.1 Display screen boost circuit

C51

102

R34

12R 1%

LED-

D_GND

L20 0R/0603

C53

106/16V/1206

LED+

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2.12V high voltage is needed for lightening display screen, so the boost circuit must be matched to

fulfill. This circuit includes two parts: boost circuit and display screen jack circuit. Boost circuit is

composed of DC-DC control IC RT9284 and peripheral circuit; VIN is power input; EN is enable end of

RT9284 , effective when in high level, SW is high voltage output pin, FB is feedback pin.

After power on, voltage divide detect circuit sends detected voltage to pin 3 of RT9284. When

voltage detected by pin 3 is lower than reference voltage1.235V this IC has a1.235 V reference

voltage comparator inside ), the internal switch is saturated and internal boost circuit of L19 and

RT9284 begin to boost and store energy. When current of L19 reaches to750mA, the internal switch of

Rt9284 turns off and power is supplied to rear circuit through external diode D2 until feedback voltage is

lower than reference voltage again. As for this PFM peak current control scheme adopted by convertor

discontinuous conduction means (DCM), the frequency depands on output current and makes the

frequency of entire load very high. Pin 4 of Rt9284 is working enable pin and connect with pin43 of

Rk2606 to control level exchange through software to complete control of Rt9284 to realize screen-

save function.

When machine power on, display screen performs data communication through rear CPU, and

restores driving current signals sent by CPU onto display screen. Signals sent by CPU are different and

display screen makes different displays, so we can see different displays and also CPU controls

screen-save function through software setup.

3.2.6 Headphone output jack circuit

1.Headphone output circuit is shown in picture 3.2.6.1:

2.The left/right channel audio signals directly output from Rk2606 to earphone jack, D1 in the

circuit is TVS diode array used for ESD protection. Ground wire of headphone is also used for antenna

input of FM module.

OUTL

HP_OUTR

HP_OUTL

R2 10R

R1 10R

1 3 4 5

2SJ-A382-001(HP-DC)

CN1

OUTR

L1 601

L2 601

FM_ANT

R102 0R*

GND

AOM

AOMS

162

RCLA MP0504F/SC-70

104

Figure 3.2.6.1 Headphone output jack circuit

- 16 -

104

L3 601

L4 601

FM_ANT

Page 21

3.2.7 USB jack ciircuit

USB data jack is composed of USB_DM, USB_DP and GND (ground wire). When the player is

connected with computer or charging through USB line, USB_VBUS is power supply pin of USB jack,

and also power supply input pin of USB jack at the same time. When the player is charging through USB,

the 5V power supply inside PC charges for Li battery through USB)VBUS. USB jack circuit is shown in

picture 3.2.7.1

D_GND

+5V

D-

D+ GND IN_L IN_R GND

3DU05S-32T-10

D_GND

SFI0402-050E100NP

1 2 3 4 5 6 7 8

L6 680

SFI0402-050E100NP*

D_GND D_GND

470R

SS8550LT

C10

SFI0402-050E100NP*

104

+5V

12K

R6 10K

1 3

104

USB_DET

USB_VBUS 2

SDCW2012-2-900T

2 4

R13 1M

D_GND D_GND

USB_DET

R12 1M

USB_DM

USB_DP

D_GNDD_GNDD_GND

Figure 3.2.7.1USB jack circuit

3.2.8 Button circuit

Button circuit diagram is shown in picture 3.2.8.1. V7 button detect adopts voltage detect modul. RK2606

confirms which button works through P0.0 P0.5 scan tube pin voltage exchange. When the relevant button is

touched, the pre-determined voltage of the relevant button pull down to the ground through the relevant resistor of

R80 R85, and then make response by internal program of Rk20606 to realize function of each button.

Figure 3.2.8.1button circuitp

- 17 -

Page 22

3.2.9 charge management circuit

1.Charge management circuit mainly complete charge function for Li battery including USB/battery switch

circuit and charge management. Its circuit diagram is shown in picture 3.2..9.1

2.When the player power off, EN is low level,Q8 is cutoff , the high level of battery anode passes to G electrode

of Q6, Q7 through D7. MOS tube is in cutoff state and battery has no output when the player power on, EN is high

level, Q8 is saturated, G electrode of Q6 Q7 is pulled down to low level, Q6 Q7 is saturated and battery begins to

output to supply power for the player. When connecting with USB jack of the computer, 5V voltage of USB_VBUS

passes to G electrode of Q6, Q7 through D7 , Q6 Q7 is cutoff and battery stops outputting.

D5 BAT43WS

USB_VBUS

R60

BAT+

10R

MMBD4148CC

R63 10K

USB_VBUS

CHG_OK

R14

VCC

R14 1K

MMST3904

GND

R66 47K

P_GND

C93

475

V_IN

STAT E

MCP73832

VBAT VBAT

PROG

VSS

R61 100R

BAT

4 3 8 6

R64

3.3K

Q6 SI2305DS

D S

Q7 SI2305DS

D S

BAT+

C95 105

CN3

BAT

P_GND

Figure 3.2.9.1 charge management circuit

- 18 -

P_GND

D_GND

Page 23

Charge management is mainly completed by charge control IC MCP73862 and peripheral circuit.

STA T1

MCP73832

Shutdow n Hi- Z

No Battery Present Hi- Z

Preconditioning L

Constant-Current Fast Charge L

Constant Voltage L

Charge Complete-Standby Hi- Z

charge c ycle s tate

Pin V_IN is power supply input pin of MCP73862 , which is input pin of USB jack 5V power supply. VBAT

is input pin of MCP73862, which is input pin of Li battery; STATE is indicator of charge state. When

STATE is low level, it indicates a charge state. On the contrary, it indicates charge is completed; PROG

is setup pin of charge circuit and MCP73862 use this reference circuit to charge for Li battery. The

relationship of charge circuit I and R64 is shown as the following:

REG

I =

REG

1000V

PROG

(A)

From the above, charge current is 400mA.

When adaptor or USB is connected externally, input voltage is 5V; internal oscillator begins to

oscillate; internal timer begins to time; charger begins to charge and IC fulfills a complete charge

process automatically. The indicator of STATE pin in charge is shown as the following:

3.2.10 Battery voltage detect circuit

1.The function of battery voltage detect circuit is to switch off the player when the detect input voltage of the

player is lower than a certain voltage. Low voltage detect circuit is shown in picture 3.2.10.1

RK2606

BAT_DET

LRADC0 LRADC1 LRADC2 LRADC3

REXT1 00K

Figure 3.2.10.1 Low voltage detect circuit

107 106 105 104 103

CHG_OK

LCD_SEL

- 19 -

VCC1V8 CHG_OK

R19

100K 1%

BATT

R16 100K 1%

R18

100K 1%

GND

Page 24

2.Battery voltage detect is fulfilled by RK2608 and firmware of the player. Pin 107 of is

externally connected with R16, R18 to compose divide voltage circuit. The voltage value after battery

electric charge is divided through voltage divide is processed by K displays on display screen to

indicate voltage value. When the voltage is lower than value set by internal program, switch off order is

sent out and the player switches off automatically.

3.2.11 Battery protection circuit

1.Battery protection board is installed on Li battery to protect it from being damaged by short-circuit,

over-discharge and over-charge. Li-ion battery and battery protection board are called as Li-ion battery

components. Battery protection circuit is shown in picture 3.2.11.1:

Figure 3.2.11.1 battery protection circuit

2.Battery protection circuit is mainly composed of battery protection IC S8261 and built-in dul-N

channel MOSFET ECH8601. S8261 is the protection IC of Li-ion polymer chargeable battery of built-in

and high-precision voltage detect circuit and delay circuit. DOUT and COUT are over-discharge when

Li battery voltage is lower than 2.4V protection output end and over-charge when Li battery voltage is

higher than 4.2V protection output end. When normal working, the two voltage pins are high level.

MOSFET opens and Li battery voltage output to the player through protection board; when in protection,

the two pins output low level to control MOSFET to cut off power. Over-current detect short circuit

protection is fulfilled through detecting short circuit state and controllingDOUT and COUT output.

- 20 -

Page 25

3.2.12 power management module

The function of power management module is to provide 3.3V and 1.8V voltage for the player’s

normal working. The LDO voltage management module is integrated inside RK2606, which can output

3.3V and 1.8V voltage. The output 1.8V voltage provides pure 1.8V power supply voltage for RK2606

after voltage stabilizing through XC6206, which is shown in picture 3.2.12.1

XC6206P152

VCC

VOUT

GN D

Figure 3.2.12.1 1.8V power supply circuit

R77 100K

C95 104

VCC1V8

3.2.13 Reset circuit

1.Reset circuit is to provide reset signals for the player. The reset circuit is shown in picture

3.2.13.1

VDD

C62 104

R46 100K

C58 104

R44 220K

SS8050LT

R48 1M

VCC

R45 10K

C65 104

R47

RESETN

D_GND

3.2.13.1 reset circuit

- 21 -

Page 26

2.When the player power on, stabilizing voltage starts to work and output 3.3V voltage VCC. The two ends

voltage of capacitor C58 can not change suddenly, B electrode of triode Q5 is low voltage, Q5 is in cutoff state and

RESETN is high level to reset Rk2606 and display screen. Meanwhile, VCC charges for capacitor C19. When B

electrode voltage of Q5 reaches to saturated voltage, Q5 is saturated on, VCC is grounded andRESETN is low level

to fulfill the player’s reset. The reset time depends on C58 and parameter of voltage divide resistorR44, R48.

3.2.14 Power on/off control circuit

1.Power on/ off control circuit is shown in picture 3.2.14.1:

VCC

R65

100K

R71

470K

GND

MMBD4148CC

Q7 SS8050LT

R74 100K

Q11 MMST3904

MMST3906

R69 100K

C94 475/X5R

BAT+

R70 10M

GND

R76 1M

R67 47K R68

10K

R75 2M

START

VCC

R59

START

PLAY/PAUSE

1N4148WSR72

R73 10K

OFF

GND

SFI0402-050E100NP

PLAY

C91

GND

100k

D6 1N4148WS

L29 601

PLAY

GND

Figure 3.2.14.1 power on/off control circuit

2.START/PLAY/PAUSE is a group of combination button and functions are different in different

times, which is decided by software. When the player is in power-off state without connecting with USB,

Q9 is cutoff. When press S7 to power on, START is pulled down to ground to output low level, Q9 is on,

diode D8 is also on, BAT+ pulls up EN through Q9, D8. Rk2606 begins to work and its internal DC-DC

output1.8V and 3.3V voltage to supply power for the whole system. System voltage VCC, VDD, OLED

voltage 13V begin to output, crystal oscillator Y1 oscillates, reset circuit works, main chip and

display screen initialize, OSD appears and machine begins to work.

When in power on state, press START/PLAY/PAUSE, Q9 is on andBAT+ produces a voltage drop

through CE of Q9. As VCC voltage is normal, the circuit composed through R69, R70 makes N electrode

of D9 keep 3.3V voltage. D9 cannot be on and it is in cutoff state, the player does not make response to

power off. After pressing button, voltage of PLAY/PAUSE pin changes and inputs to pin 57 of Rk2606 to

realize different functions in different operation interfaces.

When the time of pressing PLAY button is more than 1 second but less than 4 seconds pin 57 of

Rk2606 detects the change of voltage; software decides this signal is power- off signal and saves

contents of machine; pin 58 output OFF high level, D9 is on to make Q10 on, VCC is grounded through

CE electrode of Q10, enable end EN is low level, Rk2606 stops working to realize the player’s software

power-off.

- 22 -

Page 27

When machine down because of software problem, press START/PLAY/PAUSE button more than 4

seconds to realize firmware power-off. The process is : press the button, B electrode of Q9 is low level,

Q9 is on, BAT+ charges C94 through CE electrode of Q9 and R70. Voltage on capacitor increases

gradually to make Q10 on, VCC is grounded through CE electrode of Q10, enable end EN is low level,

Rk2606 stops working and the player is power-off. When loosening button, BAT+ keeps START pin a

high level through R67, R68; Q11 is on; electric charge saved in C94 discharges quickly through CE

electrode of R75 and R74, Q11 to ensure an normal power on when press START/PLAY/PAUSE button

next time.

3.2.15 MIC circuit

1.MIC circuit is shown in picture 3.2.15.1:

2.MIC circuit is mainly composed of MIC and microphone power bias circuit. MIC1 switches the

recorded external audio signals into electric signals and input to ADC circuit of RK2606 audio

processing after C7 coupling and switches analog signals into digital signals to form WAV file through

software encoding to save inside FLASH. R7, R11,Q1 and C6 are triode voltage stabilizing system in

circuit to supply stable voltage bias.R8 is bias resistor of MIC.

R7 100K

R11 470K

MMST3904

C6 106

MIC1

1 2

MICROPHONE

VCC

C96 104

L30

601

R14 47K

2.2K

221

104

MIC

3.2.15.1 MIC circuit

- 23 -

Page 28

Section Three Servicing Cases

3.3.1 Troubleshooting diagram

1.Troubleshooting flow chart for "no OSD"

No OSD

Whether

D2 anode 12V voltage

is normal

Whether there is 12V

voltage on display

screensocket

Whether 3.3V

power supply is normal

Whether it is

normal after changing

display screen

components

Check DC-DC boost circuit and peripheral elements

Check whether display screen flat cable holderhas false welding

Display screen flat cable holder has false welding

Display screen flat cable holder has trouble

Whether 8-digit number

of screen is normal

Change display screen components

Replace decode chip

Figure 3.3.1.1 Troubleshooting diagram for “No OSD”

- 24 -

Page 29

2. Troubleshooting flow chart for"USB is not connected”

USB is not connected

Check whether 5V of Q2 is grounded

normally

Check whether 3.3V and 1.8V are normal

whether oscillation

of 12M crystal oscillator

D+, D- resistance

software upgrading is

Check

is normal

Check

to ground

Whether

available

Q2 has trouble or USB socket has rosin joint

Check each LDO output circuit and peripheral elements

Replace crystal oscillator or capacitors on two sides

Check wether USB socket pin has rosin joint

Replace main decode chip

Upgrade software

Figure 3.3.1.2 Troubleshooting diagram for “USB is not

- 25 -

Page 30

3.Troubleshooting for"Do not charge"

Do not charge

Whether

battery is fully

charge with voltage

4.2V-4.3V

Battery

is fully charged,

then protection

Normal after discharge

Figure 3.3.1.3 Troubleshooting diagram for “Do not charge”

Change battery or battery holder if battery compone nts have trouble

Check

whether USB_VBUS

has 5V voltage

Whether

BAT voltage has

change

Check power supply circuit

ReplaceMCP73862

- 26 -

Page 31

4.Troubleshooting flow chart for "power not on"

Power not on

Check charge circuit

Check U1 and

peripheral circuit

Check U1 and

peripheral circuit

Whether battery

voltage is lower than

3.4V

Whether battery

voltageis up to 3.6V

after charge

Refer to troubleshooting diagram for "machine not power on"

Check

wetheRK2606 outputs

3.3V normally

Check

wether Rk2606 outputs

1.8V normally

Whether there is OSD

after connecting with

RK2606 P99 input pin

voltage is normal

BGA has trouble

computer

Wether

Replace battery components

Check battery toBGA circuit

Figure 3.3.1.4 Troubleshooting diagram for “Power not on”

- 27 -

Page 32

5.Troubleshooting flow chart for" Machine not power on"

Machine not power on

Replace crystal oscillator

Check reset circuit

Whether

3.3V, 1.8V voltage output is normal

Whether

crystal oscillator Y1

has normal

oscillation

Whether

reset circuit is normal

Replace main decode chip

Whether

software upgrading

is available after connecting

with computer

Whether

it is normal

after upgrading

software

Trouble is removed

Check USB terminal welding

Replace maindecode chip

Test

whether DM,

DP resistance to

ground is

normal

Replace main decode chip

Figure 3.3.1.5 Troubleshooting diagram for “Machine not

- 28 -

Page 33

3.3.2 servicing cases

[ Example 1 ] Symptom: power not on.

Description: no OSD and no output.

Analysis and troubleshooting: firstly confirm whether it is caused by battery or power circuit. Connect with

computer and check whether display screen has display. Power on, connect and there is no display. Take the player

apart and check. Firstly test power supply voltage and it cannot be lower than 3.2V.Use multimeter to test between

anode and cathode of battery and then check VCC3.3V and 1.8V that output through BGA. During the checking, we

find that 3.3V is normal and 1.8V is normal.When pressing ON button in normal working, after testing actually,

VCC1.8V should be pulled down to about 1.7V, which is normal. When working normally, VCC3.3V should be

slightly lower to 3.1--3.2V, which is normal. Then test crystal oscillator X1 and oscillation is normal. The frequency

is 12MHZ and it is 11.999MHZ after testing actually. Reset is also normal, so we finally judge that main decode chip

has trouble. Change chip RK2608 and upgrade software again. Power on and trouble is removed.

[ Example 2 ] Symptom: power not on.

Description: no OSD and no output.

Analysis and troubleshooting: firstly confirm whether it is caused by battery or power circuit. Connect with

power adapter and check whether charge is available and whether screen has display. After taking machine apart,

firstly test power supply 3.3V and 1.8V and we find 3.3V is normal. Then test 1.8V and find that voltage only has

0.7V, replace Rk2606 and trouble is removed.

[ Example 3 ] Symptom: noise when tuning.

Description: radio station has noise when tuning.

Analysis and troubleshooting: firstly judge whether the tuning components or common part has trouble. Listen

to radio station by using headphone and check whether only one side of headphone has sound and the result is

normal. Then switch in tuning state to search radio station automatically and the result is normal, which means

power supply, data and clock are normal. To remove interferences from outside, we receiver the nearest radio

station to listen and check whether it is clear, and it has noise in result. The circuit that causes noise is mainly high

frequency tuning and mixed frequency part. Check carefully and find that pin 37 of U6 (TEA5767HN) has false

welding. After welding again, trouble is removed.

[ Example 4 ] Symptom: no OSD.

Description: screen has no display.

Analysis and troubleshooting: firstly confirm whether power or display screen itself has trouble. Power on,

listen to playing sound and it is normal, so we preliminarily decide power supply 3.3V and 1.8V are normally

basically. Test voltage on two ends of L19 and it is about 4.3V, which is normal. Then test voltage on two ends of D2

and find the anode does not form 13V. Take out display screen and there is still no 13V, Check input end voltage

and EN enable end is normal. Then check feedback pin FB end voltage and it is low obviously and EN enable end

has false welding. After welding again, trouble is removed.

[ Example 5 ] Symptom: machien down when power on.

Description: after power on, machine down before entering menu operation.

Analysis and troubleshooting: when power on, machine down before entering main menu. Press PLAY button

to power on, when screen appears BBK picture justly, image of the player halts and button has no function. Firstly

test power supply 3.3V, 3.8V and it normal. Then test crystal oscillator oscillation frequency and it is normal, so we

judge that data has abnormality. Because machine down, data cannot be tested normally. Change main chip and

trouble still exists. After changing Flash U4, trouble is removed.

- 29 -

Page 34

[ Example 6 ] Symptom: machine down when tuning.

Description: machine is normal when playing Mp3, Mp4. Machine down when entering tuning state.

Analysis and troubleshooting: firstly check tuning IC power supply 3.3V, and SCL, SDA are normal.

Test whether 32.768 crystal oscillator oscillates normally and whether it has false welding. This crystal

oscillator has direction when changing it, so it cannot be stuck reversely, otherwise machine down will

happen. Test crystal oscillator and we find it has false welding. After welding again, trouble is removed.

[ Example 7 ] Symptom: computer cannot be connected.

Description: after connecting with computer, no display and disk cannot be found.

Analysis and troubleshooting: firstly confirm whether charge is available and it is normal after

power on. Use diode level of multimeter to test the resistance value to ground of D+, D- data signals in

USB terminal position and it should be close to several hundred ohm. Then test between D+ and D- and

it should not have short-circuit.Test DP and DM and they are normal. est power supply 3.3V, 1.8V and it

is normal. Crystal oscillator oscillates normally. Change chip RK2608, upgrade software again, connect

with computer and trouble is removed.

[ Example 8 ] Symptom: machine down when playing MP4.

Description: machine down when playing video files.

Analysis and troubleshooting: firstly confirm whether machine is normal when playing Mp3. If it is

normal, we can decide power supply, reset and oscillation are normal. Check data and image

processing IC and we preliminarily judge that it is not related to image processing but related to data

and address. Picture information buffers and it is mainly processed through U3. Test power supply 3.3V

voltage of U1 and it is normal. Change SDRAM directly and trouble is removed.

- 30 -

Page 35

Section Four Signal waveform diagram

This section collects signal waveform diagram of audio, video and each unit circuit with the purpose

To help servicing personnel to judge where trouble lies in accurately and quickly to improve servicing

skills. For the difference of oscillograph's type, model and tuner, a certain difference may exist, so the

servicing personnel are expected to pay more attention to check in daily operation.

1.Battery voltage BAT1 waveform diagram

µÚËÄ½Ú Î¬ÐÞ²ÎÊý

2.VDD waveform diagram

- 31 -

Page 36

3 VCC waveform diagram

4.Display screen background light BCLK waveform diagram

5.PLAY1 waveform diagram when playing

- 32 -

Page 37

6.OUT_R waveform diagram when playing music files

7.OUT_L waveform diagram when playing music files

8. Crystal oscillator Y1 waveform diagram

- 33 -

Page 38

9.U2 DC-DC switch waveform diagram

10.Power-on reset RESETN waveform diagram

11.Crystal oscillator Xt1 waveform diagram

- 34 -

Page 39

Section Five Function Introduction to IC

3.5.1 Function introduction to HY57V641620E

1. Description

The Hynix HY57V641620E(L/S)T(P) series is a 67,108,864bit CMOS Synchronous DRAM, ideally suited for the memory applications which require wide data I/O and high bandwidth. HY57V641620E(L/S)T(P) is organized as 4banks of 1,048,576x16.

HY57V641620E(L/S)T(P) is offering fully synchronous operation referenced to a positive edge of the clock. All inputs and outputs are synchronized with the rising edge of the clock input. The data paths are internally pipelined to achieve very high bandwidth. All input and output voltage levels are compatible with LVTTL.

Programmable options include the length of pipeline (Read latency of 2 or 3), the number of consecutive read or write cycles initiated by a single control command (Burst length of 1,2,4,8 or full page), and the burst count sequence(sequential or interleave). A burst of read or write cycles in progress can be terminated by a burst terminate command or can be interrupted and replaced by a new burst read or write command on any cycle. (This pipelined design is not restricted by a '2N' rule).

2. Features

◆ Voltage : VDD, VDDQ 3.3V supply voltage

◆ All device pins are compatible with LVTTL interface

◆ 54 Pin TSOPII (Lead or Lead Free Package)

◆ All inputs and outputs referenced to positive edge of system clock

◆ Data mask function by UDQM, LDQM

◆ Internal four banks operation

◆ Auto refresh and self refresh

◆ 4096 Refresh cycles / 64ms

◆ Programmable Burst Length and Burst Type

- 1, 2, 4, 8 or full page for Sequential Burst

- 1, 2, 4 or 8 for Interleave Burst

◆ Programmable /CAS Latency ; 2, 3 Clocks

◆ Burst Read Single Write operation

3. PIN Description

SYMBOL TYPE DESCRIPTION

CLK Clock

The system clock input. All other inputs are registered to the SDRAM on the rising edge of CLK

- 35 -

Page 40

CKE Clock Enable

CS Chip Select Enables or disables all inputs except CLK, CKE, UDQM and LDQM

Controls internal clock signal and when deactivated, the SDRAM will be one of the states among power down, suspend or self refresh

BA0, BA1 Bank Address

A0 ~ A11 Address

RAS, CAS, WE

UDQM, LDQM

DQ0 ~ DQ15 Data Input/Output Multiplexed data input / output pin

VDD/VSS Power Supply/Ground Power supply for internal circuits and input buffers

VDDQ/VSSQ Data Output Power/Ground Power supply for output buffers

NC No Connection No connection

Row Address Strobe, Column Address Strobe, Write Enable

Data Input/Output Mask Controls output buffers in read mode and masks input data in write mode

Selects bank to be activated during RAS activity Selects bank to be read/written during CAS activity Row Address : RA0 ~ RA11, Column Address : CA0 ~ CA7 Auto-precharge flag : A10

RAS, CAS and WE define the operation Refer function truth table for details

3.5.2 Function introduction to RK2608

1. Features

◆ 128 pins LQFP package

◆ Typical power voltage 3.3V(IO), 1.8V(Core)

◆ Use one 24MHz crystal oscillator

◆ 38 GPIO (8bits P0,P1,P3,14bits P2)

◆ 10-bit low resolution ADC with 4-channel Analog Input

◆ Build in Stereo 24-bit Delta-Sigma DAC with on-chip headphone amplifier

◆ Build in Stereo 16-bit Sigma-Delta ADC (Line-in /FM Input/ Microphone with analog mixer)

◆ 40 levels digital volume control

◆ Support external CODEC through I2DSP interface

◆ Support I2C interface

◆ Support USB 2.0 high speed and full speed

◆ Integrated 3 Channel DMA

◆ Embedded DSP Core:

· 4K words Boot Sync ROM

· 56K words Program Sync SRAM

· 48K words Data Sync SRAM

- 36 -

Page 41

· 2K words Register Space for Peripherals

· Upgradable firmware through USB/Flash interface

◆ Memory interface:

· External up to 4(cs) x 64M-4G bytes Nand type Flash accessed by DMA

· Support both 8-bit (X8 device) and 16-bit (X16 device) IO bus

· support Toshiba/ Hynix/ Infineon/ Micron/ ST Nand flash memory

· Support 2048+64 / 512+16 bytes per page

· Support various Samsung SmartMedia Cards and their listed commands

· Support SDRAM

· Support SD/MMC

◆ Video Driver: Support TFT LCD/ OLED Interface

◆ Pulse Width Modulators for EL backlights

◆ Support watchdog timer

◆ DSP-based Software:

· MPEG1/2/2.5 Audio Layer 1, 2, 3 decoding, Layer3 encoding

· WMA 9 decoding (RK2608A only)

· G.729 based voice recording and playback

· Equalizer (RK2608A only)

· MPEG-4 @QVGA decoding

· Digital photo frame application software (RK2609A only)

◆ Headphone driver output 2x9mW @32 Ohm(TYP) ; SNR: 90dB (DAC TYP)

· Low Power Consumption, <100mW at typical MP3 decoder solution

2. PIN Description

PIN No. Symbol I/O Description

1 VDDA P

2 RREF I

3 AGND P

4 DM A I/O

5 DP A I/O

6 VCCA P

7 D0 I/O Pull up Flash/ LCD/ SDRAM data bus bit 0

Analog 1.8V power output, Connect one external 10uF CAP

Reference Resistor input

Analog GND

USB data minus

USB data plus

Analog 3.3V power input

8 D1 I/O Pull up

9 D2 I/O Pull up

10 D3 I/O Pull up

11 D4 I/O Pull up

Flash/ LCD/ SDRAM data bus bit 1

Flash/ LCD/ SDRAM data bus bit 2

Flash/ LCD/ SDRAM data bus bit 3

Flash/ LCD/ SDRAM data bus bit 4

- 37 -

Page 42

12 D5 I/O Pull up

Flash/ LCD/ SDRAM data bus bit 5

13 D6 I/O Pull up

14 D7 I/O Pull up

15 RD/BY I, Pull up

16 FREN O

17 FWEN O

18 FWP O

19 VDD P

20 VSSD P

21 VCC P

22 P2.4/A0 I/O

23 P2.5/A1 I/O

24 P2.6/A2 I/O

25 P2.7/A3 I/O

26 A4 O

27 A5 O

Flash/ LCD/ SDRAM data bus bit 6

Flash/ LCD/ SDRAM data bus bit 7

Flash ready/busy signal

Flash read enable

Flash write enable

Flash write protect

Digital Core power(1.8V)

Digital Core Ground

I/O POWER(3.3V)

SDRAM/ SRAM Address Bit 0 GPIO

SDRAM/ SRAM Address Bit 1 GPIO; FALE/LCDRS

SDRAM/ SRAM Address Bit 2 GPIO; FCLE

SDRAM/ SRAM Address Bit 3 GPIO

SDRAM/ SRAM Address Bit 4

SDRAM/ SRAM Address Bit 5

28 A6 O

29 A7 O

30 A8 O

31 A9 O

32 A10 O

33 A11 O

34 A12 O SDRAM Address Bit 12 SRAM Address Bit 11

35 BA0 O SDRAM Bank Address 0 SRAM Address Bit 12

36 BA1 O SDRAM Bank Address 1 SRAM Address Bit 13

37 CKE O SDRAM clock enable to SDRAM

38 CLK O system clock to SDRAM

39 P2.8/WEN I/O

40 P2.9/CASN I/O

41 P2.10/RASN I/O

42 P2.11/CSN I/O

SDRAM/ SRAM Address Bit 6

SDRAM/ SRAM Address Bit 7

SDRAM/ SRAM Address Bit 8

SDRAM/ SRAM Address Bit 9

SDRAM Address Bit 10

SDRAM Address Bit 11 SRAM Address Bit 10

SDRAM write enable GPIO

SDRAM column address strobe GPIO

SDRAM row address strobe GPIO

SDRAM chip strobe GPIO

43 P2.13/PWM0 I/O GPIO/ PWM output0

44 P2.0/SDDO I/O

- 38 -

SD/MMC Data output, Rock2 as input Connect to SD/MMC

SDDO

Page 43

45 P2.1/SDDI I/O

46 P2.2/SDCLK I/O SD/MMC Clock output

47 P2.3/SDCS I/O SD/MMC chip select output

SD/MMC Data input, Rock2 as output Connect to SD/MMC

SDDI

48 VCC P

49 VSSD P

50 VDD P

51 P0.0 I/O Pull up

52 P0.1 I/O Pull up

53 P0.2 I/O Pull up GPIO, External int2

54 P0.3 I/O Pull up GPIO, External int3

55 P0.4

56 P0.5

57 P0.6

58 P0.7

P1.1/ I2C_SDA I/O Pull up & EN

P1.2/ I2C_SCL I/O Pull up & EN

P1.3/ I2SMCLK I/O Pull up & EN

P1.4 DAC_LRCK I/O Pull up & EN

I/O Pull up & EN

GPIO, I2SMCLK of External CODEC

GPIO, DAC LRCK of External CODEC

I/O POWER(3.3V)

Digital Ground

Digital Core power(1.8V)

GPIO, External int0

GPIO, External int1

GPIO

GPIO, External SDA of I2C

GPIO, External SCL of I2C

66 AIL1 I L-channel single-end input 1

67 AIR1 I R-channel single-end input 1

68 AIL2 I L-channel single-end input 2

71 IREF O Bias current reference of CODEC

72 VCOM O Internal biasing voltage for CODEC

73 VSSA P Negative power supply for CODEC

74 VDDA P Positive power supply for CODEC

75 AOL O L-channel single ended analog output

76 VSSAO P

77 AOM O Common mode analog output

P1.5/ ADC_LRCK I/O Pull up & EN

P1.6/ SDI I/O Pull up & EN GPIO, SDI Data input Connect to SDO of External CODEC

P1.7/ SDO

AIR2 I R-channel single-end input 2

MIC

I/O Pull up & EN GPIO, SDO Data output Connect to SDI of External CODEC

I Mic single-end analog input

GPIO, ADC LRCK of External CODEC

Negative power supply to output amplifiers

- 39 -

Page 44

78 AOMS I Common mode sense input

79 VDDAO P Positive power supply to output amplifiers

80 AOR O R-channel single ended analog output

81 HP_SENSE I Sense of jack insertion

82 VDD P

83 VCC P

84 VSSD P

85 IBOOT I, Pull up Boot select,

86 DQM0 O SDRAM DQM0

87 DQM1 O SDRAM DQM1

88 VSSD G LDO37 ground

89 VBAT42 P LDO37 Power input

90 VDD37 P LDO37 voltage output

91 SENSE I DCDC voltage sense input

92 PVSS G DCDC power ground

93 LX O DCDC switch output

94 PVDD P DCDC power supply

95 VDDD P DCDC power

96 VSS G DCDC ground

Digital Core power(1.8V)

I/O POWER(3.3V)

Digital Ground

97 CP O DCDC frequency compensation

98 FB I DCDC feedback input

99 VBAT42 P LDO33 Power input

100 VCC33 P LDO33 Voltage output

101 VSSD G LDO33 ground

102 VCCA P ADC 3.3V power input

103 REXT100K I

104 LRADC3 I Low resolution ADC input3

105 LRADC2 I Low resolution ADC input2

106 LRADC1 I Low resolution ADC input1

107 LRADC0 I Low resolution ADC input0

108 VDDPLL P Analog power of PLL

109 VSSPLL P Analog GND of PLL

110 XIN I, OSC

ADC reference Resistor input

Crystal 24MHz OSC input PAD

- 40 -

Page 45

111 XOUT O, OSC Crystal 24MHz OSC output PAD

112 VDD P

113 VSSD G

114 VCC P

115 RESET I, Pull up System reset pin, low enable

116 TEST I, Pull down Test mode

117 D8/P3.0 I/O

118 D9/P3.1 I/O

119 D10/P3.2 I/O

120 D11/P3.3 I/O

121 D12/P3.4 I/O

122 D13/P3.5 I/O

123 D14/P3.6 I/O

124 D15/P3.7 I/O

125 LCDRDN O LCD Read execution pin

126 LCDWRN O LCD Write execution pin

Flash/ LCD/ SDRAM data bus bit 10 GPIO

Flash/ LCD/ SDRAM data bus bit 11 GPIO

Flash/ LCD/ SDRAM data bus bit 12 GPIO

Flash/ LCD/ SDRAM data bus bit 13 GPIO

Flash/ LCD/ SDRAM data bus bit 14 GPIO

Flash/ LCD/ SDRAM data bus bit 15 GPIO

Digital Core power(1.8V)

Digital Ground

I/O POWER(3.3V)

Flash/ LCD/ SDRAM data bus bit 8 GPIO

Flash/ LCD/ SDRAM data bus bit 9 GPIO

127 LCDCSN O LCD driver chip select

128 FCE0 O Flash chip select 0

3.5.3 Function introduction to RT9284B

1. Description

The RT9284A/B is a compact, high efficient and high integration LED driver. Internal 22V MOSFET can support 2 to 5 White LEDs for backlighting and camera flashing.

Highly integration and internal compensation network minimizes as 5 external component counts. Optimized operation frequency can meet the requirement of small LC filters value and low operation current with high efficiency. Internal soft start function can reduce the inrush current. Tiny package type of TSOT-23-5 and TSOT-23-6 packages provide the best solution for PCB space saving and total BOM cost.

2. Features

◆ VIN Operating Range : 2.7V to 5.5V

◆ Maximum Output Voltage up to 20V

◆ Dimming with Zero-inrush and Wide Frequency Range of 100 to 100kHz

◆ Over Voltage Protection

◆ Output Current up to 100mA at VOUT = 12V.

◆ Zero Shutdown Supply Current

◆ Minimize the External Component

- 41 -

Page 46

◆ Small LC Filter

◆ Internal Soft Start

◆ RoHS Compliant and 100% Lead (Pb)-Free

3. PIN Description

PIN No. Symbol I/O Description

1 LX O

2 GND

OVP

VDD

I Supply Input Voltage Pin

Feedback Reference Voltage Pin

Switch Pin

Ground Pin

Chip Enable (Active High)

over voltage protection

3.5.4 Function introduction to MCP73832

1. Description

The MCP73831/2 devices are highly advanced linear charge management controllers for use in space-limited, cost-sensitive applications. The MCP73831/2 are available in an 8-Lead, 2 mm x 3 mm DFN package or a 5-Lead, SOT23 package. Along with their small physical size, the low number of external components required make the MCP73831/2 ideally suited for portable applications. For applications charging from a USB port, the MCP73831/2 adhere to all the specifications governing the USB power bus.

The MCP73831/2 employ a constant-current/constantvoltage charge algorithm with selectable preconditioning and charge termination. The constant voltage regulation is fixed with four available options:

4.20V, 4.35V, 4.40V or 4.50V, to accommodate new, emerging battery charging requirements. The constant current value is set with one external resistor. The MCP73831/2 devices limit the charge current based on die temperature during high power or high ambient conditions. This thermal regulation optimizes the charge cycle time while maintaining device reliability.

2. Features

◆ Linear Charge Management Controller:

· Integrated Pass Transistor

· Integrated Current Sense

· Reverse Discharge Protection

◆ High Accuracy Preset Voltage Regulation: + 0.75%

◆ Four Voltage Regulation Options:

· 4.20V, 4.35V, 4.40V, 4.50V

◆ Programmable Charge Current

◆ Selectable Preconditioning

◆ Selectable End-of-Charge Control

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Page 47

◆ Charge Status Output

· Tri-State Output - MCP73831

· Open-Drain Output - MCP73832

◆ Automatic Power-Down

◆ Thermal Regulation

◆ Temperature Range: -40°C to +85°C

◆ Packaging:

· 8-Lead, 2 mm x 3 mm DFN

· 5-Lead, SOT23

3.5.5 Function introduction to TEA5767HN

1. Description

The TEA5767HN is a single-chip electronically tuned FM stereo radio for low-voltage application with fully integrated IF selectivity and demodulation. The radio is completely adjustment-free and only requires a minimum of small and low cost external components. The radio can be tuned to the European, US and Japanese FM bands.

2. Features

◆ High sensitivity due to integrated low-noise RF input amplifier

◆ FM mixer for conversion to IF of the US/Europe (87.5 to 108 MHz) and Japanese (76 to 91MHz) FM

band

◆ Preset tuning to receive Japanese TV audio up to 108 MHz

◆ RF Automatic Gain Control (AGC) circuit

◆ LC tuner oscillator operating with low cost fixed chip inductors

◆ FM IF selectivity performed internally

◆ No external discriminator needed due to fully integrated FM demodulator

◆ Crystal reference frequency oscillator; the oscillator operates with a 32.768 kHz clock crystal or with a

13 MHz crystal and with an externally applied 6.5 MHz reference frequency

◆ PLL synthesizer tuning system

◆ I2C-bus and 3-wire bus, selectable via pin BUSMODE

◆ 7-bit IF counter output via the bus

◆ 4-bit level information output via the bus

◆ Soft mute

◆ Signal dependent mono to stereo blend [Stereo Noise Cancelling (SNC)]

◆ Signal dependent High Cut Control (HCC)

◆ Soft mute, SNC and HCC can be switched off via the bus

◆ Adjustment-free stereo decoder

◆ Autonomous search tuning function

- 43 -

Page 48

◆ Standby mode

◆ Two software programmable ports

◆ Bus enable line to switch the bus input and output lines into 3-state mode

◆ Automotive temperature range (at VCCA, VCC(VCO) and VCCD = 5 V).

3. PIN Description

PIN No. Symbol I/O Description

1 n.c. not connected

2 CPOUT O charge pump output of synthesizer PLL

3 VCOTANK1 O voltage controlled oscillator tuned circuit output 1

4 VCOTANK2 O voltage controlled oscillator tuned circuit output 2

5 VCC(VCO) P voltage controlled oscillator supply voltage

6 DGND digital ground

7 VCCD P digital supply voltage

8 DATA I/O bus data line input/output

9 CLOCK I bus clock line input

10 n.c. not connected

11 WRITE/READ I write/read control input for the 3-wire bus

12 BUSMODE I bus mode select input

13 BUSENABLE I bus enable input

14 SWPORT1 software programmable port 1

15 SWPORT2 software programmable port 2

16 XTAL1 I crystal oscillator input 1

17 XTAL2 I crystal oscillator input 2

18 PHASEFIL phase detector loop filter

19 PILFIL pilot detector low-pass filter

20 n.c. not connected

21 n.c. not connected

22 VAFL O left audio frequency output voltage

23 VAFR O right audio frequency output voltage

24 TMUTE I time constant for soft mute

25 MPXO O FM demodulator MPX signal output

26 Vref P reference voltage

27 TIFC I time constant for IF centre adjust

28 LIMDEC1 I decoupling IF limiter 1

- 44 -

Page 49

29 LIMDEC2 I decoupling IF limiter 2

30 n.c. not connected

31 n.c. not connected

32 Igain I gain control current for IF filter

33 AGND analog ground

34 VCCA P analog supply voltage

35 RFI1 I RF input 1

36 RFGND RF ground

37 RFI2 I RF input 2

38 TAGC time constant RF AGC

39 LOOPSW switch output of synthesizer PLL loop filter

40 n.c.

not connected

3.5.6 Function introduction to XC6206P152MR

1. Description

The XC6206 series are highly precise, low power consumption, high voltage, positive voltage regulators manufactured using CMOS and laser trimming technologies. The series provides large currents with a significantly small dropout voltage.

The XC6206 consists of a current limiter circuit, a driver transistor, a precision reference voltage and an error correction circuit.

The series is compatible with low ESR ceramic capacitors. The current limiter's foldback circuit also operates as a short protect for the output current limiter and the output pin.

Output voltage can be set internally by laser trimming technologies. It is selectable in 0.1V increments within a range of 1.2V to 5.0V.

SOT-23 (250mW) and SOT-89 (500mW) packages are available.

2. Features

◆ Maximum Output Current : 250mA (5.0V type)

◆ Dropout Voltage : 160mV @ 100mA (5.0V type)

◆ Maximum Operating Voltage : 6.0V

◆ Output Voltage Range : 1.2V ~ 5.0V (selectable in 0.1V steps)

◆ Highly Accurate : ± 2%

◆ Low Power Consumption : Typ. 1.0µA

◆ Operational Temperature Range : -40OC ~ 85OC

◆ Ultra Small Packages : SOT-23 (250mW), SOT-89 (500mW)

◆ Low ESR Capacitor : Ceramic compatible

- 45 -

Page 50

3.5.7 Function introduction to K9G8G08U0M

1. Description

Offered in 2Gx8bit, the K9LAG08U0M is a 16G-bit NAND Flash Memory with spare 512M-bit. Its NAND cell provides the most costeffective solution for the solid state mass storage market. A program operation can be performed in typical 800μs on the 2,112-byte page and an erase operation can be performed in typical

1.5ms on a (256K+8K)byte block. Data in the data register can be read out at 30ns(K9MCG08U5M:50ns) cycle time per byte. The I/O pins serve as the ports for address and data input/output as well as command input. The on-chip write controller automates all program and erase functions including pulse repetition, where required, and internal verification and margining of data. Even the write-intensive systems can take advantage of the K9LAG08U0M′s extended reliability of 5K program/erase cycles by providing ECC(Error Correcting Code) with real time mapping-out algorithm. The K9LAG08U0M is an optimum solution for large nonvolatile storage applications such as solid state file storage and other portable applications requiring non-volatility.

2. Features

◆ Voltage Supply : 2.7 V ~ 3.6 V Organization

- Memory Cell Array : (2G + 64M)bit x 8bit

- Data Register : (2K + 64)bit x8bit

◆ Automatic Program and Erase

- Page Program : (2K + 64)Byte

- Block Erase : (256K + 8K)Byte

◆ Page Read Operation

- Page Size : (2K + 64)Byte

- Random Read : 60μs(Max.)

- Serial Access : 30ns(Min.) *K9MCG08U5M : 50ns(Min.)

◆ Memory Cell : 2bit / Memory Cell

◆ Fast Write Cycle Time

- Program time : 800μs(Typ.)

- Block Erase Time : 1.5ms(Typ.)

◆ Command/Address/Data Multiplexed I/O Port

◆ Hardware Data Protection

- Program/Erase Lockout During Power Transitions Reliable CMOS Floating-Gate Technology

- Endurance : 5K Program/Erase Cycles(with 4bit/512byte ECC)

- Data Retention : 10 Years

◆ Command Register Operation

◆ Unique ID for Copyright Protection

3. PIN Description

- 46 -

Page 51

Pin Name Pin Function

I/O0 ~ I/O7

CLE

ALE

CE / CE1

CE2

DATA INPUTS/OUTPUTS The I/O pins are used to input command, address and data, and to output data during read operations. The I/ O pins float to high-z when the chip is deselected or when the outputs are disabled. COMMAND LATCH ENABLE The CLE input controls the activating path for commands sent to the command register. When active high, commands are latched into the command register through the I/O ports on the rising edge of the WE signal. ADDRESS LATCH ENABLE The ALE input controls the activating path for address to the internal address registers. Addresses are latched on the rising edge of WE with ALE high.

CHIP ENABLE The CE / CE 1 input is the device selection control. When the device is in the Busy state, CE / CE1 high is ignored, and the device does not return to standby mode in program or erase operation. Regarding CE / CE1 control during read operation , refer to ’Page Read’ section of Device operation

CHIP ENABLE The CE2 input enables the second K9LAG08U0M READ ENABLE

R/B / R/B1

Vcc

Vss

N.C

The RE input is the serial data-out control, and when active drives the data onto the I/O bus. Data is valid tREA after the falling edge of RE which also increments the internal column address counter by one. WRITE ENABLE The WE input controls writes to the I/O port. Commands, address and data are latched on the rising edge of the WE pulse.

WRITE PROTECT The WP pin provides inadvertent program/erase protection during power transitions. The internal high voltage generator is reset when the WP pin is active low. READY/BUSY OUTPUT The R/B / R/B1 output indicates the status of the device operation. When low, it indicates that a program, erase or random read operation is in process and returns to high state upon completion. It is an open drain output and does not float to high-z condition when the chip is deselected or when outputs are disabled.

POWER VCC is the power supply for device.

GROUND

NO CONNECTION Lead is not internally connected.

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Page 52

Chapter Four Assembly and disassembly process

In order to get to know the structure of V7 more easily and directly, now we use pictures to present

each key point of assembly and disassembly process to all users to prevent users from operating blindly

and damaging elements. So, we hope you can operate according to the instructions strictly.

Note All operations must be with strict anti-static measures, operators must wear anti-static

gloves or wrist ring, electric screwdriver must be grounded effectively and articles, such as nippers must

remove static before using !

4.1 Disassembly process of the player

1. Use electric screwdriver or "+” shaped screwdriver to take out two stainless steel screws of two sides of USB interface;

3.Take out bottom cover;

2. Use nail to force from gap of middle and bottom casing, disassemble bottom casing and the player;

4. Take out battery from main board, pay attention to glue of rear side of battery;

- 48 -

Page 53

5. Use electric screwdriver or"+” shaped screwdriver to take out four screws of main board.

6. Separate middle cover and surface cover, do not damage the six clamps shown in the figure.

7.Use electric screwdriver or "+” shaped screwdriver to take out two screws of main board;

8. Take out main board from surface board, do not damage each terminal;

4.2 Assembly process of the player

Assembly process of the player is similar with disassembly process, and only the sequence is reverse.

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Page 54

Chapter Cinque

PCB board & Circuit diagram

Section One Circuit diagram

FM_3V3

R56 22R

C81 104

FM_3V3

SGND

FM_ANT1

FM_ANT

O603CS

L22 33nH±2%

MURATA COILCRAFT OR TOKO SMD LLQ1608-A33NG

C78 103

L23 33nH±2%

MURATA COILCRAFT OR TOKO SMD LLQ1608-A33NG

C68 101

O603CS

MURATA COILCRAFT TOKO SMD

LLQ1608-AR10G

BB202

FM_3V3

R58

22R

SGND

C90 104

L21 120nH

SGND

C69 27PF

C71 47PF

R54 100K

SGND

R53 10K

C76 393

L28

N.C

CPOP

VCOT1

VCOT2

VCOVCC

DGND

DVCC

DATA

CLOCK

N.C

L27 601/0402

601/0402

C70 472

N.C

RFI1

RFI2

TCAGC

RFGND

LOOPSW

TEA5767HN

NECTAR-IO603CS

W/R

BUSM

BUSEN

SWP1

SWP2

XTAL1

111213141516171819

SGND

FM_3V3

I2C_SCL 2 I2C_SDA 2

AVCC

XTAL2

AGND

PDLF

R52 18K

313233343536373839

N.C

IFGAI

DIFL2 DIFL1

TCIFC

VREF

MPXO

TMUTE

RAVO LAVO

PHLF

N.C

R51 10R

C72 475/X5R

N.C

C73 473

C74 473

SGND

30 29 28 27 26 25 24 23 22 21

XT1

32.768KHz

OR 13MHz CRYSTAL

SGND SGND

C77 333

C85 102

C75 473

C79 333

L24 L25

C87 22PF

SGND

R57 33K

C88 223

SGND

601/0402 601/0402

SGND

C86 223

SGND

C80 105/X5R

C82 105/X5R

C89 102

FM_OUTR 1

FM_OUTL 1

VCC33A

D_GND

L26 10UH/2012

R55

C83

106/X5R

SGND

FM_3V3

C84 104

- 50 -

Page 55

VCC

USB_VBUS3

BAT+

USB_VBUS

P_GND

VBUS

R60 10K

R63

C93 475/X5R

+5V VB

R62

10K/47K

BAT+

MMST3904

GND

U7 MCP73832 DFN8

V_IN

2 3 4 5

PROG V_IN BAT BAT STATE

D5 BAT43WS

MMBD4148CC

R61 100R

8 7

VSS

P_GND

VCC

R64 3.3K

P_GND

SI2305DS SOT23

D S

BAT+

C92 105/X5R

GND

R66 47K

BAT+

CHG_OK 2

R59 100K

D10

PLAY/PAUSE2

1N4148WS

SFI0402-050E100NP

CN3

BAT

R67

START

R68 10K

47K

PLAY

C91

GND

BAT+

MMST3906

START

1N4148WS

L29 601/0402

S7 PLAY

GND

VCC

R65 100K

R69 100K

D8 MMBD4148CC

VCC

U8 XC6206P152

GND

D_GND

VOUT

R77 100K

VCC1V8 2

C95 104

P_GND

R70

5.6M

OFF2

D9 1N4148WS R72 10K

R73 10K

START

GND

D_GNDP_GND

GND

R76 1M

R74 100K

Q11

MMST3904

GND

R75 2M

GNDGND

C94 475/X5R

Q10

SS8050LT

R71 470K

GNDGND

- 51 -

Page 56

CN1

2 5 6 3 7 4 1

2SJ-0890-A02 USB/HPOUT

FM_ANT

L1 601

L2 601

FM_ANT

R3 0R

OUTL

OUTR

HP_OUTR

R1 10R

104

HP_OUTL

HP_OUTR

R2 10R

104

HP_OUTL

+5V

D+

GND

IN_L

IN_R

GND

3DU05S-32T-10

R12 1M

D_GND

L3 601 L4 601

USB_DM USB_DP

2 2

104

C96

VCC

FM_ANT

L30

601/0402

R7 100K

R11 470K

MMST3904

106/X5R

MIC1

MICROPHONE

1 2

R14 47K

2.2K

221

C7 104

MIC

1 6

RCLAMP0504F/SC-70 6L

GND

D_GND

SFI0402-050E100NP

1 2

D-

3 4 5 6 7 8

L5 680

SFI0402-050E100NP*

D_GND

470R

SS8550LT

C10 SFI0402-050E100NP*

D_GND

3 4

104

+5V

AOM AOMS

D_GND

R4 12K

R6 10K

USB_VBUS2

104

USB_DET

R10 0R

USB_DET 2

R13 1M

D_GND

D_GNDD_GND

D_GND

- 52 -

Page 57

GND

VDD

D_GND

VCC

GND

C62

104

R46 100K

C56

GND

C35

106/X5R

R44 220K

R48 1M

VCC_SDRAM

104

GND

C67

D_GND

104

GND

C36 103

C42

104

C46 104

C58 104

FALE/RS/A1 FCLE/A2

104

D0 D1

D2 D3

D4 D5

D6 D7 DQM0

WEN CASN RASN CSN BA0 BA1 A10 A0

20PF/NPO

C24

106/X5R

C26

USB_DM USB_DP

VDDD

VCC

XOUT

C13

R22 10K

2 2

VCC

SS8050LT

D_GND

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

D_GND

FALE/RS/A1 FCLE/A2

R45 10K

VDD DQ0 VDDQ DQ1 DQ2 VSSQ DQ3 DQ4 VDDQ DQ5 DQ6 VSSQ DQ7 VDD DQM0 WEN CASN RASN CS BA0 BA1 A10AP A0 A1 A2 A3 VDD

SDRAM

R15 1M

24MHz

DM DP

D0 D1 D2 D3 D4 D5 D6 D7

RD/BY

FREN FWEN FWP

A10

R47 1K

C65

104

HY57V641620ETP

VSS DQ15 VSSQ DQ14 DQ13

VDDQ

DQ12 DQ11

VSSQ

DQ10

DQ9

VDDQ

DQ8

VSS

DQM1

CLK

CKE

A12 A11

A9 A8 A7 A6 A5 A4

VSS

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15

16 17 18 19

20 21

22 23

24 25

26 27 28 29 30 31

RESETN

20PF/NPO

D_GND

VDDA RREF AGND DM DP VCCA D0 D1 D2 D3 D4 D5 D6 D7 RD/BY

FREN FWEN FWP VDD

VSSD VCC

P2.4/A0 FALE/RS/A1

FCLE/A2 P2.7/A3

A4 A5 A6 A7 A8 A9

A10

A11

R50 33R

54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28

XIN

C14

LCDWRN

FCE0

LCDCSN

127

126

128

FCE0

LCDCSN

BA0

BA1

CKE

A12

353637

CLK

A12

BA0

CKE

BA1

C66 6P

D_GND

D15 D14

D13 D12

D11 D10

D9 D8

DQM1 CLK# CKE A12 A11 A9 A8 A7 A6 A5 A4

LCDRDN

D11

D10

D14

D13

D12

117

118

119

120

121

122

123

124

125

P3.1/D9

LCDRDN

P3.2/D10

P3.3/D11

P3.4/D12

P3.5/D13

P3.6/D14

P3.7/D15

LCDWRN

P2.8/WEN

P2.9/CASN

P2.10/RASN

P2.11/CSN

P2.13/PWM0

P2.0/SDDO

P2.1/SDDI

CLK

P2.2/SDCLK

3940414243444546474849

WEN

RASN

CASN D15

CSN

FCE1

LCD_REST

BACK_EN

VCC

C54 104

CLK#CLK

D_GND

C11 104

GND

VDDD

C18

105/X5R

GND

XOUT

XIN

111

112

113

114

VDD

VCC

VSSD

XOUT

RESETN

RK2606

VSSD

VDD

DFU

C55 104

C57

104

C61

104

VDD_PLL

BATT

C12 104

VCC1V8

BAT_DET

CHG_OK

106

105

107

109

110

108

XIN

VSSPLL

VDDPLL

LRADC1

LRADC0

P0.0

P0.1

P0.2

5355565758

VDDD

R16 100K±1%

R18 100K±1%

100K±1%

CHG_OK

GND

VCC

LCD_SEL

104

101

103

102

VSSD

VCCA

LRADC2

LRADC3

REXT100K

P0.4

P0.3

VOL+

VOL-

R19

P0.5

GND

VCC

GND

100

P0.6

PLAY/PAUSE

DFU

VOL+

VOL-

106/X5R

VCC33

OFF

2 2

C20

P0.7

I2C_SDA

C21

106/X5R

GND

VBAT42

P1.1/I2C_SDA

P1.2/I2C_SCL

P1.3/I2SMCLK

P1.4/DAC_LRCLK

6061626364

I2C_SCL

I2C_SDA

I2C_SCL

R80 4.7K

R81 4.7K

R82 4.7K

R83 4.7K

R84 4.7K

R85 4.7K

HP_SENSE

P1.5/ADC_LRCLK

P1.6/SDI

USB_DET

SENSE VCC37

VBAT42

IBOOT

VDDAO

AOMS

VSSAO

VCOM

P1.7/SDO

R32

C22 47P C23 101

VSS VDDD PVDD

PVSS

VSSD DQM1 DQM0

VSSD

VCC VDD

AOR

AOM

AOL VDDA

VSSA

IREF

MIC AIR2 AIL2 AIR1 AIL1

VDDO

C98

GND

C99

GND

C100

GND

C101

SFI0402-050E100NP

GND

C102

SFI0402-050E100NP

GND

C103

SFI0402-050E100NP

GND

R21 330K

GND

95 94 93 92

GND

VCC37

90 89 88

DQM1

DQM0

86 85 84 83 82 81 80 79

AOMS

AOM

77 76 75

74 73 72 71

MIC

70 69 68 67 66 65

Q4 SI2305DS SOT23

R29

100K

A_B/REC

SFI0402-050E100NP

VOL+

VOL-

VDDO

C19

C33

C34

104

106/X5R

GND

L14 CDRH2D11-470

R23 1K R24 10K

R25 2R2 C41 106/X5R

C43

GND

104

VCC

HP_OUTR 2 AOMS 2

AOM 2

HP_OUTL 2

MIC 2

R27

FM_OUTR 2

56K±1%

FM_OUTL 2

VDDAO

I2C_SCL

I2C_SDA

GND

L13 601

C37 106/X5R

GND

C44

104

VDDD

GND

C50

C49

106/X5R

GND

104

I2C_SCL I2C_SDA

VCC

RESETN

115

116

TEST

P3.0/D8

128-Pin TQFP

P2.3FCE1/SDCS

VCC

GND

D_GND

VCC37

10K

L15 601 C38 104

GND

C47 106/X5R

R35

I2C_SDA

I2C_SCL

R26

2.2K

C48

VCC

R36 10K

VCC_FLASH

- 53 -

C39 47uF/6.3v

GND

C45

106/X5R

GND

L17

601/0402

104

R40 0R R41 0R

C59 104

VDDVDDO

D_GND

C40 104

GND

L16 601/0402

VDDO

RD/BY

FALE/RS/A1

FREN

FCLE/A2 FWEN

FWP

VDDAO

L18

106/X5R

RES#

R/B2

R/B1

CE1

CE2

VCC

VSS

CLE

ALE

24 25

NC NC

NAND FLASH

VDD

L6 601/0402* L7 601/0402 L8 601

C15

C16

104*

GND

VCC

L9 601/0402 L10 601/0402 L11 601 L12 601/0402

C25 47uF/6.3v

GND

CN2

VCC1V8

R86 10K*

LCD_SEL

R87 4.7K*

R88 47K*

D_GND

32pin

601

BACK_EN

C52

I/O7

I/O6

I/O5

I/O4

R42 0R

PRE

VCC

VSS

I/O3

I/O2

I/O1

I/O0

GND

L19 CDRH2D11-100

L31

C60

104

4 2

GNDENFB

RT9284/RT9271

R37 47K

LXVCC

OVP

C63 104

R30 100R

R33 10K

VCC

601/0402

VCC_FLASH1

D_GND D_GND

D_GND

C17

104

D_GND

GND

C27

C28

104

GND

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

176*220(RGB)

28 29 30 31 32

R28 0R

MBR0520/SOD123

16 5

R31 0R

VCC_FLASH

R39 10K

R38 47K

RD/BY

FREN FCE0 FCE1

GND

FCLE/A2

FALE/RS/A1

FWEN

FWP

R49 47K

D_GND

VCC1V8

C30

C29

104

106/X5R

GND

LED+ LED-

D_GND

LCD_3V3

LCDCSN FALE/RS/A1 LCDWRN LCDRDN

D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15

D_GND

LCD_3V3

D_GND

C51

102/25V

R34

12R±1%

D_GND

RES#

R/B2

R/B1

CE1

CE2

VCC

VSS

CLE

ALE

24 25

NC NC

NAND FLASH

C31 106/X5R

GND

L20 0R/0603

C53

106/25V/1206

NC NC NC

NC I/O7 I/O6 I/O5 I/O4

NC PRE VCC VSS

NC I/O3 I/O2 I/O1 I/O0

VCC1V8 VDD_PLL VDDD

VCC_FLASH LCD_3V3 VCC33A VCC_SDRAM

C32 104

GNDGND

R78 0R

R79 0R*

NAND FlashNAND Flash

48 47 46 45 44 43 42 41 40 39

R43 0R

38 37 36 35 34 33 32 31 30 29 28 27 26

LED+

D7 D6 D5 D4

VCC_FLASH2

D3 D2 D1 D0

RESETN

LCD_REST

LED-

LED+

VCC

L32

601/0402

C64

C97

104

Page 58

Section Two PCBboard

Surface layer of Main Board

- 54 -

Page 59

Bottom layer of Main Board

- 55 -

Page 60

Chapter six BOM List

BATTERY PROTECT BOARD 5448893

MATERIAL CODE MATERIAL NAME SPECIFICATIONS LOCATION

0090354 SMD RESISTOR 1/16W 470O±5% 0402 R1 0090368 SMD RESISTOR 1/16W 2K±5% 0402 R2 0310480 SMD CAPACITOR 10V 104±10% 5R 0402 C1,C2,C3 0790065 SMD FIELD EFFECT TRANSISTOR ECH8601 TSSOP 0790090 SMD FIELD EFFECT TRANSISTOR ECH8601R TSSOP 0882570 IC S-8261AANMG22 SO23-6 U1 1633305 PCB E29-0

U2　　　① U2　　　 ①

V7H(RU) BLACK[2606]

MAINBOARD 2V7-1 4940266

MATERIAL CODE MATERIAL NAME SPECIFICATIONS LOCATION

0090324 SMD RESISTOR 1/16W 0O±5% 0402 R3,R9,R10,R28,R31,R40,R41,R42,R43,R55,R78,C19

0090046 SMD RESISTOR 1/10W 470O±5% 0805 R5 0090037 SMD RESISTOR 1/10W 2.2O±5% 0805 R25 0090326 SMD RESISTOR 1/16W 10O±5% 0402 R1,R2,R51 0090830 PRECISION SMD RESISTOR 1/1612O±1% 0402 R34 0090447 SMD RESISTOR 1/16W 22O±5% 0402 R56,R58 0090330 SMD RESISTOR 1/16W 33O±5% 0402 R50 0090339 SMD RESISTOR 1/16W 100O±5% 0402 R30,R61 0090362 SMD RESISTOR 1/16W 1K±5% 0402 R23,R32,R47,R62 0090369 SMD RESISTOR 1/16W 2.2K±5% 0402 R8,R26 0090373 SMD RESISTOR 1/16W 3.3K±5% 0402 R64

- 56 -

Page 61

0090377 SMD RESISTOR 1/16W 4.7K±5% 0402 R80,R81,R82,R83,R84,R85,R87

SMD PRESS SENSITIVITY RESISTOR

0090385 SMD RESISTOR 1/16W 10K±5% 0402 R6,R22,R24,R33,R39,R45,R53,R60,R63,R68,R72,R73,R35,R36 0090387 SMD RESISTOR 1/1612K±5% 0402 R4 0090390 SMD RESISTOR 1/16W 18K±5% 0402 R52 0090396 SMD RESISTOR 1/16W 33K±5% 0402 R57 0090400 SMD RESISTOR 1/16W 47K±5% 0402 R14,R37,R38,R49,R66,R67,R88 0090402 SMD RESISTOR 1/16W 56K±5% 0402 R27 0090408 SMD RESISTOR 1/16W 100K±5% 0402 R7,R29,R46,R54,R59,R65,R69,R74,R77 0090417 SMD RESISTOR 1/16W 220K±5% 0402 R44 0090421 SMD RESISTOR 1/16W 330K±5% 0402 R21 0090001 SMD RESISTOR 1/16W 0O±5% 0603 L20 0090425 SMD RESISTOR 1/16W 470K±5% 0402 R11,R71 0090433 SMD RESISTOR 1/16W 1MO±5% 0402 R12,R13,R15,R48,R76 0090436 SMD RESISTOR 1/16W 2MO±5% 0402 R75 0090443 SMD RESISTOR 1/16W 5.6MO±5% 0402 R70 0090509 PRECISION SMD RESISTOR 1/16W 100K±1% 0402 R16,R18,R19 1030029 1030033 0310503 SMD CAPACITOR 50V 6P±0.25P NPO 0402 C66 0310415 SMD CAPACITOR 50V 20P±5% NPO 0402 C13,C14 0310416 SMD CAPACITOR 50V 22P±5% NPO 0402 C87 0310418 SMD CAPACITOR 50V 27P±5% NPO 0402 C69 0310424 SMD CAPACITOR 50V 47P±5% NPO 0402 C71,C22 0310432 SMD CAPACITOR 50V 101±5% NPO 0402 C23,C68 0310435 SMD CAPACITOR 50V 221±5% NPO 0402 C8

SFI0402-050E100NP

S1005H180C100GPT 0402

C5,C91,C98,C99,C100,C101, C102, C103 　 ② C5,C91,C98,C99,C100,C101, C102, C103　 ②

- 57 -

Page 62

0310704 SMD CAPACITOR 25V 102±10% 7R 0402 C51,C85,C89 0310706 SMD CAPACITOR 25V 472±10% 7R 0402 C70 0310453 SMD CAPACITOR 25V 103±10% 7R 0402 C36,C78 0310455 SMD CAPACITOR 16V 223±10% 7R 0402 C86,C88 0310710 SMD CAPACITOR 16V 333±10% 5R 0402 C77,C79 0310711 SMD CAPACITOR 10V 393±10% 5R 0402 C76 0310712 SMD CAPACITOR 10V 473±10% 5R 0402 C73,C74,C75

C1,C2,C3,C4,C7,C11,C12,C16,C17,C26,C27,C28,C30,C32,C33,C

0310480 SMD CAPACITOR 10V 104±10% 5R 0402

0310790 SMD CAPACITOR

10V 104±20％ 5R 0402

38,C40,C42,C43,C44,C46,C48,C50,C54,C55,C56,C57,C58,C59,C 60,C61,C62,C63,C64,C65,C67,C81,C84,C90,C95,C96,C97

③

C1,C2,C3,C4,C7,C11,C12,C16,C17,C26,C27,C28,C30,C32,C33,C 38,C40,C42,C43,C44,C46,C48,C50,C54,C55,C56,C57,C58,C59,C 60,C61,C62,C63,C64,C65,C67,C81,C84,C90,C95,C96,C97

③

0310776 SMD CAPACITOR 6.3V 105±20% 5R 0402 ? ?

0310662 SMD CAPACITOR 6.3V 105±10% 5R 0402

0310717 SMD CAPACITOR 6.3V 475±20% 5R 0603 C72,C93,C94

0310486 SMD CAPACITOR 6.3V 106±20% 5R 0805

0310831 SMD CAPACITOR

0310834 SMD CAPACITOR 16V 106±20% 5R 1206 C53

0310866 SMD CAPACITOR

0390142 SMD MAGNETIC BEADS FC1608-60102 L1,L2,L3,L4,L8,L11,L13,L15,L18

0390354 SMD MAGNETIC BEADS 68O/100MHz±25% 1608 L5

6.3V106±10%5R 0805 T≤0.85

6.3V 476 M X5R 1206 T≤1.6

- 58 -

C18,C80,C82,C92　　 ④

C18,C80,C82,C92　　④

C6,C20,C21,C24,C29,C31,C34,C35,C37,C41,C45,C47,C49,C52, C83,C25　　　 ⑤

C39

Page 63

0390388 SMD MAGNETIC BEADS 600O/100MHZ±25% 1005 L7,L9,L10,L12,L16,L17,L24,L25,L27,L28, L29,L30,L31,L32

0390221 SMD COIL THREAD INDUCTOR 33nH±2% 1608 L22,L23

0390398 SMD COIL THREAD INDUCTOR 120nH±2% 1608 L21

0390044 SMD INDUCTOR 10UH±10% 2012 L26

0390541 SMD CORES INDUCTOR 10uH ±20% 0.49A 7E03LAM L19

0390540 SMD CORES INDUCTOR 33uH ±20% 0.27A 7E03LAM L14

0700154 SMD TRIODE 14148WS SO323 D6,D9,D10

0700057 SMD DUAL DIODE MMBD4148CC SO23 D7,D8 0680077 SMD SCHOTTKY DIODE MBR0520 SOD123 D2 0700115 SMD TRANSFIGURATION DIODE BB202 D4,D3 0680074 SMD SCHOTTKY DIODE B43WS SO323 D5 0780300 SMD TRIODE SS8550LT SO323 Q2 0780298 SMD TRIODE MMS3904 SO323 Q1,Q8,Q11 0780299 SMD TRIODE SS8050LT SO323 Q5,Q10 0780293 SMD TRIODE MMS3906 SO323 Q9 0790041 SMD FIELD EFFECT TRANSISTOR SI2305DS SO23 Q4,Q6,Q7 1090080 ESD ELEMENT RCL0504 SC70-6L 1090084 ESD ELEMENT PLR0504P SC70-6L 0883370 IC MCP73832 DFN U7 0883477 IC R2606A LQFP U1

08825598 IC HY57V641620ETP-7 TSOP$ U3

0883456 IC K9LAG08U0M-PCBO TSOP U4 0883384 IC XC6206P152MR SOT-23 U8

- 59 -

D1　　　 ⑥ D1　　　 ⑥

Page 64

0882388 IC TE5767HN HVQFN U6 0883217 IC RT9284B-20PJ6E SOT23-6 U2 0960279 SMD CRYSTAL OSCILLATOR 32.768KHz±20ppm SS6 12.5P XT1 1340174 LIGHT TOUCH SWITCH TS-1186-2(180 GRAM PUISSANCE) S1,S2,S3,S4,S5,S6,S7 1860140 USB SOCKET 3DG08S-30G-P J1 1980104 SMD EARPHONE SOCKET 2SJ-0890-03 CN1 1140082 MICROPHONE 44dB±3dB 4×1.2 WITH NEEDLE 1140105 MICROPHONE 0960278 SMD CRYSTAL OSCILLATOR 24MHz±30ppm 5032/4 20P Y1 1634135 PCB 2 7-1 FR4 D0.8×4 OSP

42dB±2dB 4×1.5　WITH NEEDLE MIC1　　　　 ⑦

MIC1　　　　 ⑦

- 60 -

BBK V7N, V7H service manual

Specifications and Main Features

Frequently Asked Questions

User Manual