BBK V3H, V5N, V5H Schematic

V3N V3H

V5N V5H

service manual

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

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2

3

4

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

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 CALENDAR

2.1.11 CHARGE

2.1.12 RESET

2.2 USAGE INTRODUCTION

2.2.1 MAIN MENU ILLUSTRATION

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5

6

7

2.2.2 PLAYING INTERFACE

8

2.2.3 RECORDING INTERFACE

2.2.4 TUNING INTERFACE

2.3 BASIC OPERATION

2.3.1 USE MOBILE STORAGE FUNCTION

2.3.2 DISCONNECT USB SAFELY

2.3.3 VIDEO CONVERSION TOOL

2.3.4 BROWSE/CANCEL FILE

2.3.5 PLAY MUSIC

2.3.6 A-B REPEAT FUNCTION

2.3.7 PLAYING MODE

2.3.8 EQ MODE

2.3.9 EQ MODE

2.3.10 MY EQ SETUP

2.3.11 WALLPAPER SELECT

2.3.12 RECORD

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2.3.13 TUNING

2.3.14 E-BOOK

2.3.15 CALENDAR

2.4 SYSTEM SETUP

2.4.1 LANGUAGE

2.4.2 TIMING POWER-OFF

2.4.3SCREEN SAVER TIME

2.4.4 BRIGHTNESS

2.4.5 FM CHANNEL

2.4.6 SOUND OF PRESSING

2.4.7 DEFAULT SETTINGS

2.4.8 FIRMWARE UPGRADING

2.4.9 SYSTEM INFORMATION

2.4.10 FORMAT

2.5 SPECIFICATION

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Chapter Three Principle and Servicing

Section One Principle of the Player

3.1.1 Block diagram of the player

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3.1.2 Principle of the player

14

3.1.3 Introduction to IC used by 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

3.2.4 FM tuning circuit

3.2.5 Display screen boost circuit

3.2.6 USB jack circuit

3.2.7 Headphone output jack circuit

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

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3.2.14 Power on/off control circuit

3.2.15 MIC circuit

Section Three Servicing Cases

3.3.1 Servicing cases

3.3.2 Troubleshooting diagram

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

3.5.3 Function introduction to RT9284B

3.5.4 Function introduction to TPS62200

3.5.5 Function introduction to MCP73832

3.5.6 Function introduction to TEA5767HN

3.5.7 Function introduction to M41T62

3.5.8 Function introduction to WM8750BL

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3.5.9 Function introduction to XC6206P152MR

Chapter Four Assembly and Disassembly Process

4.1 Disassembly process of the player

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4.2 Assembly process of the player

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Chapter Cinque PCB board & Circuit diagram

Section One PCB board

5.1.1 Surface layer of Main Board

5.1.2 Bottom layer of Main Board

Section Two Circuit diagram

Chapter six BOM List

Chapter Seven V5 Assembly and Disassembly Process

7.1 Disassembly process of the player

7.2 Assembly process of the player

Chapter Eight V5 PCB board & Circuit diagram

Section One PCB board

8.1.1 Surface layer of Main Board

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8.1.2 Bottom layer of Main Board

Section Two Circuit diagram

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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

V3 video:

:

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:

Push in power-off state

#

Push for long in power-on state

#

Push in playing interface

#

Push when recording

#

Push when tuning

#

Push when timing with stopwatch

#

Press when in menu operation

#

Press when recording

#

Press when in stopwatch timing interface

#

Press when in music playing interface

#

Press when in music playing, tuning, e-

#

book browsing, picture browsing and recording preparation interface

:

Press when playing or tuning

#

Press when in "My sound effect setting"

#

Press when setting clock

# #Press when browsing e-book

Press when in menu operation

#

:

#Press when playing #Press for long when playing #Press when in tuning preset state

power on power off pause/play switch pause recording mute record time enter the item or confirm the setting save record files Time/pause timing Exit and enter into main menu interface

On-line menu pops up adjust volume Adjust dB value set time

turn lines

Move cursor

the previous/next track fast backward/forward Select channel

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Press when in tuning search state

#

Press for long when in tuning search state

#

Press when in "My sound effect setting"

#

auto search Automanual search select the frequency that you want to set

Press when browsing picture

# #Press when browsing e-book

Press when in menu operation

#

:

#Press for long when in music playing

interface

switch pictures turn pages move cursor

A-B repeat #Press for long when in file browsing interface #Press when in file browsing interface

Delete file

return to the previous

directory #Press when in menu operation

not save the setting and then

exit from menu Hanging rope hole USB jack MIC: microphone Headphone jack HOLD button: lock buttons when pushing towards arrow direction and unlock when push towards the opposite direction.

2.1.2 POWER ON/OFF

#Power on

Press button to power on, the power-on motion picture displays and

PUSH

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

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

#FF and FB

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

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to exit and enter main menu interface.

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After pressing button to exit from on-line menu, pictures will be played in the means of

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PRESS

slide.

2.1.6 E-BOOK BROWSING

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.

2.1.4 VIDEO

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

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PRESS

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.

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PRESS

NOTE:

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

#Switch of ANSI encoding format

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".

NOTE:

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

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2.1.5 PICTURE BROWSING

After selecting picture file, press button to

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

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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.

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.

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PRESS

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CAUTION:

#In order to avoid sudden power-off in the 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.

#When recording with microphone, if you press

buttons and the sound of pressing may probably be recorded.

2.1.8 TUNING

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PRESS

In main menu, select "Radio set" item and

press button to enter tuning mode. Now,

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insert headphone and you may listen to radio program. After entering tuning mode, pressing button may enter "On-line menu".

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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

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from the position where playing stopped last time.

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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.

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.

2.1.12 RESET

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

2.2 USAGE INTRODUCTION

2.2.1 MAIN MENU ILLUSTRATION

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PRESS

2.1.10 CALENDAR

In "Calendar" menu, you may set "Clock", "Calendar" and Stopwatch".

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PRESS

2.1.11 CHARGE

#Play music Save audio files.

#Browse picture

Save picture files.

#Record Select “Record” to enter recording mode.

#Calendar

Select "Calendar" item to enter this mode.

#Resume playing

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

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#Video

Save video files.

#E-book

Save text files.

#FM Radio

Select to enter radio mode.

#Setup

Select "Setup" item to set system options.

2.2.2 PLAYING INTERFACE ILLUSTRATION

As for the name of recorded file “REC0001.wav”: 0001 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 ILLUSTRATION

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1. Current track serial number

2. total track number

3.Clock

4. Battery capacity

5. Song name

6. Song name/singer/lyrics display

7. Total track time

8. Playback progress bar

9. Playback state

10. Current playback time

11. Volume

12. Playback mode

13. EQ mode

14. Music file format

15. Sampling rate\Bit rate

2.2.3 RECORDING INTERFACE ILLUSTRATION

1.Clock

2. Battery capacity

3. Name of recorded file

4. Time that has been recorded

5. The left recordable time

6. Recording quality

1.Clock

2. Battery capacity

3. Preset mode

4. Frequency of the current radio station

5. Scanning progress bar

6. Radio station serial number

7. Volume

8. Scanning mode

9.Mono channel

2.3 BASIC OPERATION

2.3.1 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.

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2.3.2 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.

#Cancel file

When browsing files, press button for long and the cancel dialogue box will pop up. Press button to select "YES" and then press button to cancel the file.

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PRESS FOR LONG

2.3.3 VIDEO CONVERSION TOOL

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.

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.

NOTE:

When in playing state, files cannot be cancelled.

2.3.5 PLAY MUSIC

#PLAY MUSIC

In “music”, press button to select song,

/

press button to begin playing music, and the playback interface displays at the same time.

#Pause music

When playing music, press button to switch to pause playing state, and press button again to continue playing.

PUSH

#NEXT and PREV

When playing, pressing button may skip to the next track to play; and pressing button may skip to the previous track to play.

# FF and FB

When playing, pressing button for long without loose may realize fast forward.

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

2.3.4 BROWSE/CANCEL FILE

#Browse file

In main menu, audio files are saved in "Music playing" item. Press or button to select files to browse upwards or downwards.

PRESS

PRESS FOR LONG

When playing, pressing button for long

without loose may realize fast backward.

#ADJUST VOLUME

When in playback interface or listening to radio set, pressing button or for long may both adjust volume.

NOTE:

#In some operating system (such as complex font Windows), the operation of copying lyrics/song file and changing song's name may

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Probably lead to incorrect display. When playing non-standard songs or songs with special format, noise may probably occur.

2.3.6 A-B REPEAT FUNCTION

When playing, if you want to listen to content of a certain segment repeatedly, please use A-B repeat function. Press button for long for the first time to select the beginning point that you want to play repeatedly and screen displays“A”; press button for long for the second time to select the end point that you want to play repeatedly and screen displays “A-B”and system begins to repeat during“A-B”period; press button for long for the third time to cancel A-B repeat and playing continues.

PRESS FOR LONG

2.3.7 PLAYING MODE

2.3.9 EQ MODE

The corresponding icons of each EQ mode

in playback interface are shown as follows:

NORMAL

3D

ROCK

POP

CLASSIC

DBASS

JAZZ

MY EQ

Select “MY EQ”, and correspond with the sound effect that you have preset in “On-line menu” in playback mode. If you have not set “MY EQ”, it is defaulted “NORMAL” sound effect,

When cursor moves to a certain sound effect, press button to confirm the selection of this EQ mode.

2.3.10 MY EQ SETUP

In "My EQ setup" interface, the range value (dB) of each frequency range may be increased or decreased.

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The playback mode icons displayed on playback interface are shown as follows:

: Repeat playing all tracks.

: Play according to track sequence.

: Repeat file folder.

: Repeat playing single track.

: Play any track at random.

: Browse play each track for 10

seconds.

2.3.8 EQ MODE

When playing music, press button to enter “On-line” menu, press button to enter “EQ Select”, and then move cursor through pressing button to select proper EQ mode.

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If you want to adjust the range of mediant (1K), you may operate according to the following diagram:

PRESS

Press button to select the frequency range that you want to adjust, and press button to adjust the range value. When adjusting the range, take 2dB as a step, and the max adjustable scope is 6dB. After setup finishes,

++

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press button to confirm and exit; press button not to save and then exit.

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2.3.11 WALLPAPER SELECT

When playing music, you may select wallpaper in“On-line” menu. Press button to enter “On-line”menu and press button to move cursor to "Wallpaper select" item. Select your favourite wallpaper and then press button to confirm.

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PRESS

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2.3.12 RECORD

In main menu, after selecting “REC”, press button to enter recording ready state. In recording ready state, press button to pop up

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on-line menu.

# Recording quality

If recording quality is higher, sound quality is better and space occupied is more. The two kinds of recording quality both adopt ADPCM format encoding, which is only effective to MIC recording.

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#Preset

In preset mode, pressing button may adjust to the next channel and pressing button may adjust to the previous channel. #Save

In manual or automanual scanning mode, after radio station is searched, press button

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to enter on-line menu. After selecting "Save", press button to confirm.

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PRESS

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2.3.13 TUNING

#Enter radio set mode

Select "Radio set" in main menu and press

button to listen to radio program.

#Quit radio set mode

When listening to radio program, press

button to exit and enter main menu.

#Search

When listening to radio program, press

button to enter on-line menu.

There are two kinds of scanning mode of

“Manual” and “Auto”.

1. Manual scanning Pressing button may add 0.1MHZ each

time and pressing button may decrease

0.1MHz each time. Pressing / button for long may

increase or decrease frequency continuously and will stop until radio station is searched.

#Delete

In tuning interface, press button to enter

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on-lin menu, select “Delete” item, move cursor to the frequency point that you want to delete and press button to confirm.

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PRESS

#FM recording

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When listening to radio set, press button to pop up “On-line” menu and select “Record” item to enter FM recording. Press button to

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generate recording file and exit to tuning state. Format of file generated from FM recording is WAV format and this file is saved in“FM REC” file folder of “Music playing”.

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PRESS

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2. Auto scanning In on-line menu, after selecting "Auto" item,

full auto scanning starts and all radio stations searched will be saved automatically.

NOTE:

During the course of (full-auto/automanual)

scanning, pres button and scanning will be stopped.

2.3.14 E-BOOK

When browsing e-book, pressing button may enter "On-line" menu. In on-line menu, you may set jump pages, save bookmark, extract bookmark, delete bookmark, auto page down, music playing, style select and font size. #Jump pages

You may press and button to set page by using this function, shown in the figure:

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After setup finishes, press button to confirm.

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#Save bookmark

In on-line menu, select “Save bookmark” item

and press button to enter. Pressing button

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may select th position to save and pressing button may set the current page as bookmark.

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PRESS

#Extract bookmark

In on-line menu, select Extract book

mark" item and press button to enter.

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Press button to select your desired bookmark and then press button to confirm.

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#Delete bookmark

After selecting "Delete bookmark" item, press button to make dialogue box pop up. Select "OK" item and then press button to

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delete bookmark. #Auto page down

After pressing button to enter on-line

menu, select "Auto page down" item and press

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button to enter interval time setup of page down. After selecting your desired interval time, press button and the E-book will turn pages

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Automatically. #Music playing

After setting "Music playing" item in "ON", you may browse E-book while listening to music. #Style select

In "Style display" item, you may set your favourite style according to your own likes.

2.3.15 CALENDAR

#Clock

In "Calendar" menu, press button to enter "Clock" item and you may set the current time.

Press button to select time format: 12hour or 24-hour system.

PRESS

Use and button to set the current time and then press button to confirm.

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#Calendar

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Press button to enter "Calendar" setup. Use and button to set date. #Stopwatch

In "Stopwatch" menu, press button to start

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Timing. When timing, Push button to save record and press

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button to stop timing

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PRESS

2.4 SYSTEM SETUP

2.4.1 LANGUAGE

#Language

Press button to enter the setup, press button to select language and press button to confirm. After setup is ok, press button to return to the previous content.

2.4.2 TIMING POWER-OFF

#Timing power-off

Press button to adjust timing power-off time. After setup is ok, press button to confirm. If the timing power-ff time is set in 15-min, after 15 minutes this player will power off automatically.

CAUTION:

#Invalid is defaulted each time when power on.

#Timing power-off time is rough time and it may probably have deviation. #When recording, please do not set timing power-ff, otherwise the recording files cannot be played normally.

2.4.3

#Screen saver time

After pressing button to select screen saver time, press button to confirm. If screen saver time is set in 15 seconds and no operation happens within 15 seconds, this player will enter screen saver state automatically.

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SCREEN SAVER TIME

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CAUTION:

#Screen saver time is rough time and it may have difference when playing songs with different formats. #Screen saver function is not available when in video playing, stopwatch, Ebook and pictures.

2.4.4 BRIGHTNESS

#Brightness

Press button to select proper

brightness and then press button to confirm.

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2.4.5 FM CHANNEL

# FM Channel

You can select the FM channel in settings. When select Auto, it changes the channel Automatically. When select Mono, it tunes atMono channel all the time.

CAUTION:

“General radio station" is the default value

each time when power on.

2.4.6 SOUND OF PRESSING

BUTTON

#Sound of pressing button

After entering this menu, you may set "On" or "Off" for the sound of pressing buttons. When dialogue box pops up, press button to move cursor to "On" and then press button to confirm.

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2.4.7 DEFAULT SETTINGS

#Default settings

If you want to restore this player in factory settings state (material and song file will not be deleted), you may select "Default settings". Press button to enter this menu, after dialogue box pops up, select "Yes" and then press button to restore in "Default settings".

2.4.8 FIRMWARE UPGRADING

# Firmware upgrading

This player supports firmware upgrading. Please refer to the description on BBK website for details.

CAUTION:

After upgrading, disk will be formatted, so please pay attention to backup materials before upgrading.

2.4.9 SYSTEM INFORMATION

#System information

In this item, you may check information of memory, remained memory and version number.

CAUTION:

Because firmware will use some space, the displayed content capacity may probably be different from the actual capacity.

2.4.10 FORMAT

#Format

When using computer to format this player, please select FAT32 file system, otherwise this player will work abnormally.

2.5 SPECIFICATION

Model

Audio decode chip

Lithium battery

Continuous playback time

Size/weight

Audio SNR

Headphone output

Frequency range

FM tuning range

Working temperature

Audio file

Picture file

V3 video

WOLFSON WM 8750

3.7V 650mAh

Longest continuous playing time for MP3 is 11 hours

Size: 85.5mm 50mm 10mm weight: 66.2g

90dB

12mW+12mW 32 ohm (25mW+25mW when headphone impedance is 16-ohm)

18Hz~20kHz

76MHz~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

V5 video

WOLFSON WM 8750

3.7V 900mAh

Longest continuous playing time for MP3 is 15 hours

Size: 87mm 54mm 11mm weight: 76g

#Design and specifications of product are

subject to change without notice.

- 13 -

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:

POWER

MANAGEMENT

MODULE

POWER

ADAPTOR

CHARGE

MANAGEMENT

SDRAM

LDO CIRCUIT

TPS79333

DC-DC CIRCUIT

TPS62200

USB INTERFACE

AUDIO&VEDIO CODEC

USB POWER

24M CRYSTAL

LI-ION BETTERY

HEADPHONE

MICROPHONE

AUDIO CODEC

WM8750

RK2608

FLASH MEMORY

FM MODULE

TEA5767

QVGA LCD

LDO BACKLIGHT

RT9284

SWITCH CIRCUIT

RESET CIRCUIT

TOUCH-BUTTON

CONTROL

CY8C21434

TOUCH-BUTTON

ARRAY

Figure 3.1.2.1 Block diagram of the player

3.1.2 Principle of the player

V3/V5 portable Mp4 player is mainly composed of the following functional modules:

1. Decode part: main video decode chip adopts Rk2608 decode chip of Rockchip Company with

built-in ROM and RAM, which may directly drive TFT LCD screen. Main audio decode chip adopts

Wm8750 decode chip of Wolfson Company.

- 14 -

2. Power supply part: composed of lithium battery, TPS79333, TPS62200 and XC6206, which is

Location number Chip Function

U1 HY57V641620ETP-7 SDRAM

U2 RK2608 Main video decode board

U3 RT9284B 12V voltage DC-DC conversion

U4, U5 K9G8G08U0M FLASH

U6 TPS62200 1.8V voltage DC-DC conversion

U8 MCP73832 Charge management

U9 TEA5767HN Tuning chip

U10 M41T62 Real-time clock

U11 WM8750BL Audio encode/decode

U14 XC6206P152MR 1.8V voltage stabilizing

U15 CY8C21534 Touch button control

U16 TPS79333DBVR 3.3V voltage DC-DC conversion

Location number Chip Function

U1 WM8750BL Audio encode/decode

U2 HY57V641620ETP-7 SDRAM

U3 RK2608 Main video decode

U4, U5 K9G8G08U0M FLASH

U6 M41T62 Real-time clock

U7 TEA5767HN Tuning chip

responsible for power supply circuit of each part of the entire MP3.

3. Peripheral jack” composed of headphone output port, MIC input port and USB jack. Headphone

jack is the audio output jack of the player, MIC is the audio input jack of external recording and USB jack

fulfills internal and external data exchange of the machine to realize charge function.

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

5. Display module: V3 adopts 2.4” high-bright QVGA screen and V5 adopts 3” high-bright 16:9 LCD

screen.

6. Tuning module: FM tuning.

3.1.3 Introduction to IC used by the player

1. IC used by the main board of V3 is shown in the following picture:

2. IC used by the main board of V5 is shown in the following picture:

- 15 -

U8 SSD1928QL9 LCD drive

U10 RT9284B 12V voltage DC-DC conversion

U11 TPS79333DBVR 3.3V voltage DC-DC conversion

U12 TPS62200 1.8V voltage DC-DC conversion

U13 MCP73832 Charge management

U14 XC6206P152MR 1.8V voltage stabilizing

U15 CSTCR4M00G55 SMD ceramic resonance

U1 CY8C21534 Touch button control

- 16 -

Section Two Unit Circuit Principle

3.2.1 Video decode circuit principle

1. Video decode circuit is mainly composed of main decode chip Rk2608, SDRAM and peripheral

circuit. Rk2608 may realize video file decode playing of MPEG-4 format in low frequency and power

consumption with clear and smooth picture quality, meanwhile, Rk2608 integrates large amount of I/O

control jacks which may provide the max flexibility. The internal principle block diagram of Rk2608 is

shown in the picture 3.2.1.1. Low power consumption function of Rk2608 may prolong battery usage

time for portable player and its integrated intelligent lithium battery charger supports voltage control

(AVC) and its integrated power management unit includes a DC-DC converter on high effective plate,

which supports multiple battery configuration, such as 1×AA, 1×AAA and Li-ion battery. What’s more,

compared with the traditional voltage control system, AVC enables chip to operate with higher peak

value CPU working frequency to make the highest running speed up to 100 MIPS. Rk2608 supports

DRM10 digital copyright management technology based on SOFTWARE. Rk2608 with multi-function

management function, which may realize the function that listening to music while viewing e-book or

playing e-games. Rk2608 chip integrates USB 2.0 High Speed/Full Speed PHY with hugher

transmission speed and integrates the controller that supports TFT/CSTN/OLED colorful screen.

Figure 3.2.1.1 Internal principle block diagram of Rk2608

- 17 -

2. Working principle: when the machine power on, reset circuit keeps high level reset signal. After

RK2608 completes reset through reset pin 113, reset signals output from pin 56 to pin 42 of SSD1928 to

enable SSD1928 to finish reset (V3 screen need no SSD1928 drive, so there is no this reset process), at

the same time reset signals are sent to enable end of RT9284, boost circuit begins to work and screen is

lightened. Meanwhile, 1.8V and 3.3V power circuit begins to supply power for RK2608, 24M crystal

oscillator Y1 oscillates and decode chip begins to work and read data saved in Flash. After RK2608

decoding, video signals are sent to SSD1928 to drive LCD screen to display through SSD1928.

3.2.2 Audio decode circuit principle

1. Audio decode circuit is mainly composed of decode chip WM8750 and peripheral circuit. WM8750

is a stereo coder/decoder with low power consumption and high quality, specially designed for portable

digital audio application. WM8750 adopts I2C bus mastering means and its internal principle block

diagram is shown in the picture 3.2.2.1.

Figure 3.2.2.1 WM8750 internal principle block diagram

2. Working principle: the digital audio signals that output after being decoded by the internal decode

circuit of RK2608 are sent to WM8750 inside for DA conversion through pin 6 of WM8750 and the analog

audio signals after conversion are sent to headphone jack for output through HP_OUTR and HP_OUTL.

When the machine is recording, external analog audio signals pass through microphone and an

INPUT pin (pin 24) of WM8750 and then are sent to AD conversion unit of WM8750 for AD conversion

and then for digital filtering, volume control and echo processing inside. The digital audio signals after

being processed are sent to main decode chip RK2608 for processing and then saved in Flash.

- 18 -

When machine is in FM state, FM digital audio signals input from INPUT pin (pin 27, 28) of

WM8750, after digital filtering and echo processing inside WM8750, and then output to headphone jack

directly.

3.2.3 FLASH circuit

1. FLASH circuit schematic diagram is shown in the figure 3.2.3.1:

VCC

R35 47K

VCC

R36 47K

FCE0 FCE1

C39 104

GND

R37 10K

RD/BY

FREN

FCLE/A2

FALE/RS/A1

FWEN FWP

R40 47K

D_GND

U4

1

RES#

2

NC

3

NC

4

NC

5

NC

6

R/B2

7

R/B1

8

RE

9

CE1

10

CE2

11

NC

12

VCC

13

VSS

14

NC

15

NC

16

CLE

17

ALE

18

WE

19

WP

20

NC

21

NC

22

NC

23

NC

24

NC

NAND FLASH

NC NC NC

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

NC

PRE

VCC

VSS

NC

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

NC

48 47 46 45 44 43 42 41 40 39

R32 0R

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

D7 D6 D5 D4

D3 D2 D1 D0

VCC

C40 104

D_GND

Figure 3.2.3.1 Flash circuit schematic diagram

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

be stored in FLASH. Flash module is composed of two groups of FLASH chip K9G8G08U0M with the

specification 2G (H model is 4G). Flash chip and main decode RK2608 are connected through 8 data

lines to complete the read, write and delete of inside files. VCC provides 3.3V voltage for FLASH

working. R35, R36 are pull-up resistor of /CE and R40 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 working. /RE, /WE are read-effective and write-ettective signal ports to control rear and

write function of FLASH. I/O1 I/O8 are 8 data lines to fulfill the exchange of FLASH and outside data to

realize the function of write, delete and edit of Mp3.

- 19 -

There is firmware of the player’s working inside Flash and all tasks are completed by CPU to send

out relevant order after the 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 signal and Flash begins to work

effectively. When playing video files, /RE is high level, Flash performs the operation of read out. When

files are written in through USB data line or recording through microphone, /WE is high level and Flash

performs the operation of writing in. The operation of read out and writing in is performed through

I/O1~I/O8 dateladdress lines.

3.2.4 FM tuning circuit

1. FM tuning circuit diagram is shown in the figure 3.2.4.1

FM_3V3

R69 22R

C68 104

FM_ANT

FM_3V3

FSGND

FM_ANT

L17 33nH 2%

L18 33nH 2%

C66 103

C56 101

R73 22R

D10

BB202

D11

BB202

FM_3V3

FDGND

C76 104

L16 120nH

C57 27PF

FDGND

C59 47PF

R70 100K

FSGND

R68 10K

C65 393

L23 601 DCR<350m

L24

C58 472

1

N.C

2

CPOP

3

VCOT1

4

VCOT2

5

VCOVCC

6

DGND

7

DVCC

8

DATA

9

CLOCK

10

N.C

FDGND

601 DCR<350m

40

N.C

W/R11BUSM12BUSEN13SWP114SWP215XTAL116XTAL217PDLF18PHLF19N.C

36

37

38

39

RFI2

TCAGC

RFGND

LOOPSW

TEA5767HN

NECTAR-I

FM_3V3

I2C_SCL

I2C_SDA

33

34

35

RFI1

AVCC

32

AGND

R67 18K

31

N.C

IFGAI

DIFL2 DIFL1

TCIFC

VREF MPXO

TMUTE

RAVO

LAVO

20

C60 475/X5R

N.C

R66 10R

C61 473

C63 473

C67 333

601 DCR<350m

L7

L8

601 DCR<350m

C73 22PF

FDGND

FSGND

FDGND

FSGND

R72 33K

C74 223

FDGND FDGND

C72 223

5767R

5767L

C75 102

C62 473

XT1

32.768KHz

C64 333

C71 102

FDGND

U9

FSGND

30 29 28 27 26 25 24 23 22 21

Figure 3.2.4.1 FM tuning circuit diagram

2. Working principle: tuning circuit is composed of the micro digital tuning IC TEA5767 of Philips

Company and peripheral circuit. C56, C57, C58, C59, L16 is the antenna input matching circuit of FM

module; variant diode D10, D11 and winding inductor L17, L18 is frequency selection tuning circuit in FM

module. The control of FM adopts IIC bus control means and 9, 10 of TEA5767 are data and control

lines.

- 20 -

When MP3 player switches in FM tuning state, antenna is sent to the RF band-pass filter

(87.6MHz~108MHz and 76MHz 87.5MHz) composed of Li6, C57 and C59 through C56 coupling and

then to pin 35, 37 of TEA5767 for amplifying through TEA5767 inside. Pin 2, 3, 4 of TEA5767 is

connected with the internal VCO and with variant diode D10, D11 externally. Pin 2 id tuning voltage

output pin and voltage changes within 1V when in auto search. VCO power supply is sent to pin 5 of

TEA5767 by FM 3V3 through 69 limit and C68 filtering. The built-in I2C jack is controlled through pin 8, 9

of TEA5767 and CPU performs operation of channel search and selection through I2C bus. Digital power

is sent to pin 7 of TEA5767 by FM 3V3 through R73 limit and C76 filtering. XT1 (32.768) produces basic

clock of 32.768 and inputs to TEA5767 from pin 17. Analog audio signals after being processed by

TEA5767 output to rear stage power amplifying circuit from 23 (right channel), 22 (left channel) for

amplifying and then output through headphone jack.

3.2.5 Display screen boost circuit

1. Display screen boost circuit diagram is shown in the picture 3.2.5.1:

VB

L9 601/0603

C35

106/X5R

BACK_EN

BACK_L

R61 0R*

R59 1K

R60 10K

L10

CDRH3D16-100

R63

0R*

Figure 3.2.5.1 Display screen boost circuit

6

VCC

4

EN

2

GND

U3

RT9284B

LX

OVP

FB

D3

MBR0520/SOD123

1

5

3

C5

102

R30

12R¡À1%

LED-

D_GND

L11 601/0603

C36

106/16V/1206

LEDP

LED+

2. Working principle: 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 and FB is feedback pin.

After power on, the internal boost circuit of L10 and Rt9284 begins to boost and storage energy.

When current of L10 reaches 750mA, RT9284 internal switch turns off, and supplies power for the rear

circuit through external diode D3 at the same time when the switch is off. Voltage divide detect circuit

sends the detected voltage in pin 3 of RT9284. When detect voltage of pin 3 is lower than 1.235V

reference voltage (this IC has a 1.235V reference voltage comparator inside), the internal switch is on,

the internal boost circuit of L10 and RT9284 begins to boost and store energy. When current of L10

- 21 -

reaches 750mA, the internal switch of RT9284 turns off, and supplies power for the rear circuit through

external diode D3 at the same time when switch is off until feedback voltage is lower than reference

voltage again. As for this PFM peak current control scheme adopted by convertor and discontinuous

conduction means (DCM), the frequency depends on output current and makes the frequency of entire

load very high. Pin 4 of RT9284 is working enable pin and connected with pin 56 of RK2608 to control

level change through software and control RT9284 to realize screen-save function.

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

restores the drive current signals sent from CPU on display screen. Signals sent from CPU are different

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

screen-save function through software setup.

3.2.6 USB jack circuit

1. USB jack circuit is shown in the picture 3.2.6.1.

D_GND

R3

J1

+5V

D-

NC

D+ GND IN_L IN_R GND

3DU05S-32T-10

D_GND

SFI0402-050E100NP

C6

1 2 3 4 5 6 7 8

L6 680

C8

SFI0402-050E100NP*

D_GND D_GND

R5

470R

SS8550LT

Q2

601 DCR<350m

L2

L4

601 DCR<350m

C9

SFI0402-050E100NP*

D_GNDD_GNDD_GND

C4

104

+5V

SPEAKER_OUTL

SPEAKER_OUTR

12K

R8 10K

1 3

C3

104

USB_DET

USB_VBUS 2

T1

SDCW2012-2-900T

2 4

R11 1M

D_GND D_GND

USB_DET

R12 1M

USB_DM

USB_DP

Figure 3.2.6.1USB jack circuit diagram

2. Working principle: USB data jack is composed of USB_DM, USB_DP and GND (ground wire).

When the player is connected with computer or is charging through USB line, USB_VBUS is power

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

charging through USB, the internal 5V power of PC charges Li battery through USB.

Meanwhile, IN_L and IN_R pin of USB jack is also audio output pin of the player. One channel of

audio signals after being processed by Wm8750 outputs to headphone through HP_OUT and one

channel performs external output through SPEAKER_OUT of USB jack.

- 22 -

3.2.7 Headphone output jack circuit

1. Headphone output jack circuit principle diagram is shown in the picture 3.2.7.1:

OUT_L1

4

5

162

RCLA MP0504F/SC-70

D1

R99 1K

R100 1K

C31

220UF/4V

HP_OUTL

C32 220UF/4V

R83 10R

104

C90

HP_OUTR

R84 10R

C92

104

1 3 4 5

2SJ-A382-001(HP-DC)

CN1

FM_ANT

L1 601/0603

L3 601/0603

R102 0R*

L5

601/0603

OUT_R1

3

GND

Figure 3.2.7.1 Headphone output jack circuit

2. Working principle: left/right channel audio signals that output from Wm8750 output through

220uF capacitor coupling. D1 in the circuit is TVS diode array used for ESD protection. Ground wire of

headphone is also used as antenna input of FM module.

3.2.8 Button circuit

1. Button circuit diagram is shown in the picture 3.2.8.1:

VDL

VDD

P06 P04 P02 P00 P26 P24 P22 P20

XRES

P16 P14 P12

SDA

VDL

C30 105

GND

28 27 26 25 24 23 22 21 20 19 18 17 16 15

R103

K4

K5

K6 K3 K2 K1

10K

XRES

SDA

INT

VLED

J2

8 7 6 5 4 3 2 1

PSOC_SCL

PSOC_SDA

D_GND

K1 K2 K3 K4 K5 K6

R4 100R

R74 10K

R75 10K

R9 100R

VCC

SCL

U15

CY8C21534

1

P07

2

P05

3

P03

4

P01

5

P27

6

P25

7

P23

8

P21

9

VSS

10

P17

11

P15

12

P13

13

SCL

14

VSS

Figure 3.2.8.1Button circuit diagram

2. Working principle: V3/V5 adopts touch button and button control IC is CY8C21434. CY8C21434

integrates the programmable digital and analog system inside, which may configure various functional

modules needed by users flexibly, and it is a really system (SoC) with mixed signals processing ability.

CY8C21434 chip belongs to capacitor touch mode, which adopts I2C bus control.

- 23 -

Each button is actually a capacitor. When pressing this flat capacitor, it means two capacitors are

connected parallel on two ends of this capacitor to make the capacitance of this capacitor become

large charge/discharge cycle become long and the counting number for recording charge process

become large. Counting numbers of many charge cycle form a group of original data named as rawdate

and a new group of numbers, baseline, is formed through rawdate 4. In theory, change of rawdate and

baseline is accordant. After touching buttons, rawdate becomes large quickly. When more than noise

level (V3 is set as 30) set by us, baseline will not change any more. Now, we may judge whether some

buttons are pressed and confirm which buttons are pressed through calculating the difference between

rawdate and baseline. And button function is realized through software.

3.2.9 Charge management circuit

1. Charge management circuit is mainly responsible for Li battery’s charge function and its circuit

diagram is shown in the picture 3.2.9.1:

5V

D5

R101 1K

4 8 3 6

BAT43WS

R14 100R

BAT

G

R53

2.7K 1%

Q1 SI2305DS

D S

BATT

C99 105

BAT

BAT1

CN3

1

BAT

2

CHG_OK

USB_VBUS

USB_VBUS3

D_GND

U8

VDD VDD START NC

P_GND

VBAT

PROG

VBAT

VSS

R52 0R

R54 10K

VCC

C96

475

VIN

1 2 5 7

MCP73832T

D_GND

Figure 3.2.9.1 Charge management circuit diagram

2. Working principle: seen from the circuit, charge circuit is mainly composed of charge control IC

MCP73862 and peripheral circuit. VIN is power input pin of MCP73862, that is, 5V power input end of

USB jack; VBAT is output pin of MCP73862, that is, input end of Li-ion battery; STAT means that charge

is in process when in low level, whereas means that charge finishes; PROG is charge current setup end

and MCP73862 uses this reference current to charge Li battery. Relationship between charge current

I R53 is shown as the following:

REG and

- 24 -

1000V

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

I =

REG

R

PROG

(A)

From the above, charge current is 400mA.

When power adapter 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 automatically fulfills a

complete charge process. During the process of charge, indication of STAT pin is shown in the following

table:

3.2.10 Battery voltage detect circuit

1. Low voltage detect circuit diagram is shown in the picture 3.2.10.1:

BATT

R16

2

C38

100K 1%

R17

100K 1%

GND

RK2608

LRADC0 LRADC1 LRADC2 LRADC3

REXT100K

Figure 3.2.10.1 Low voltage detect circuit

2. Working principle: as for the function of battery voltage detect circuit, when we detects that input

voltage of the player is lower than a certain voltage, the player switches off. Battery vltage detect is

fulfilled by Rk2608 and firmware of the player. Pin 105 of Rk2608 is connected with the voltage divide

circuit composed of R16 and R17. The voltage value after battery electric charge is divided through

voltage divide circuit is processed by Rk2608 and then displays on screen to indicate voltage value.

105 104 103 102 101

BAT_D ET

GND

VCC1V8

104

- 25 -

3.2.11 Battery protection circuit

1. Battery protection board is installed on Li battery and used to prevent Li battery from being

damaged by short-circuit, over-charge and over-discharge. Li battery and battery protection board are

called as Li battery components. Battery protection board principle diagram is shown in the picture

3.2.11.1:

Figure 3.2.11.1 Battery protection circuit

2. Working principle: battery protection circuit is mainly composed of battery protection IC S8261

and built-in dual N-channel MOSFET ECH8601. S8261 is the protection IC of Li-ion polymer changeable

battery of built-in 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 pin. When working normally, the two pins are high

level. MOSFET opens and Li battery voltage outputs to the player through protection board. When in

protection, the 2 pins output low level to control MOSFET to cut off power. Over-current detect (short-

circuit protection) is fulfilled by V- pin through detecting short-circuit state and controlling DOUT and

COUT output.

3.2.12 Power management module

1. Function of power management module is to provide 3.3V and 1.8V voltage for the player’s

normal working, shown in the picture 3.2.12.1, 3.2.12.2:

VB

C91 106/X5R

P_GND

R98 68K

EN

U16

1

VIN

2

GND EN3BYPASS

TPS7 9 3 33

P_GND

C93 102

VOUT

T

S

O

5

4

23-6

C4 103

P_GND

VCC

Figure 3.2.12.1 3.3V power circuit diagram

- 26 -

VDD

C98 101

VDD

C48

106/X5R

D_GND

VDD

C45 106/X5R

U6

1

VI

2

GND EN3FB

TP S 62 200/FAN5307* SOT23-5

P_GNDP_GND

V_ADJ

2

EN

SW

5

4

R45

L13 CDRH3D16-100

C44

R42

47PF

240K 1%

Q8

MMST3904

D_GND

R43 100K 1%

R44

390K 1%

10k

R46

47k

D_GND

Figure 3.2.12.2 1.8V power circuit diagram

2. Working principle: seen from the circuit diagram, 3.3V power is supplied by IC TPS79333 and

peripheral circuit. TPS79333 is a linear volatge stabilizing module (also called as LDO) and its EN pin is

the enable pin that controls normal working, effective when in high level; BYPASS pin has a resistor

inside, which may constitute low-pass filter together with external 103 capacitor C4 to decrease output

noise.

1.8V power of the player’s working is supplied by TPS62200 and peripheral circuit. TPS62200 is

high-efficience voltage drop DC-DC convertor and EN pin is enable pin, effective when in high. The

relationship between TPS62200 output voltage and FB pin feedback resistance is:

R42

VOUT=0.5

1+

( )

R43

From the above, output voltage is about 1.75V.

3.2.13 Reset circuit

1. Reset circuit supplies reset signals for the player. Reset circuit diagram is shown in the picture

3.2.13.1:

VCC

C19 104

R21 220K

R20 10K

Q3SS8050LT

R56 0R

RESETN

R22 1M

GND

C23 104

Figure 3.2.13.1 Reset circuit diagram

- 27 -

2. Working principle: when the player power on, voltage stabilizing circuit begins to work and 3.3V

voltage VCC outputs. Voltage on two sends of capacitor C19 cannot change suddenly, so B electrode of

triode Q3 is low level, Q3 is in cutoff state, RESETN is high level to reset for Rk2608 and display screen.

Meanwhile, VCC charges capacitor C19. When B electrode voltage of Q3 reaches connected voltage,

Q3 is on, VCC is on to ground, RESETN becomes low level and reset of the player finishes. Reset time

is decided by C19 and parameters of resistor R21 and R22.

3.2.14 Power on/off control circuit

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

BATT

R93 10M

P_GND

R89 10K R90

10K

47K

R96

2.7M

START

OFF

PLAY/PAUSE2

PLAY

START

C85

P_GND

SFI0402-050E100NP

D_GND

START

D12

1N4148WSR95

R65 10K

P_GND

VCC

Q4

MMST3906

R87

330K

EN

R88 1M

P_GND

1N4148WS

Q7 SS8050LT

D8

R94 100K

Q5 SS8050LT

R92 330K

C87 475/X5R

R97 1M

VCC

R85

100k

D9 1N4148WS

L22 601 DCR<350m¦¸

SW1

C86

HOLD

R58 47K

1

2

3

4

VCC

Figure 3.2.14.1 Power on/off control circuit diagram

2. Working principle: START/PLAY/PAUSE is a group of combination buttons and functions are

different in different working times, decided by software. When the player is in power-off state without

connecting with USB, Q4 is in cutoff state. When power-on button Sw1 is in ON position, START is

pulled down to ground to output low level, Q4 is on, diode D8 is also on, BATT pulls EN up through Q4

and D8, TPS62200 and TPS79333 begin to enter working state to output 1.75V and 3.3V voltage to

suppl power for the entire system. System voltage VCC, VDD and OLED (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, Q4 is on and BATT produces a voltage drop

through CE electrode of Q4. Because VCC voltage is normal, the circuit composed through R92, R93,

C87 makes N electrode of D12 keeps 3.3V voltage. D12 cannot be on and it in cutoff state, but after

pressing button, voltage of PLAY/PAUSE pin changes and then inputs to pin 57 of Rk2608 to realize

different functions in different operation interfaces.

- 28 -

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

Rk2608 detects he change of voltage; software decides this signal is power-off signal and then saves

contents of machine; pin 58 outputs high level, D12 is on to make Q7 on, VCC is grounded through CE

electrode of Q7, enable end EN is low level, TPS62200 and TPS79333 stop voltage output and the

player realizes software power-off.

When machine down because of software problem, pressing START/PLAY/PAUSE button more

than 4 seconds may realize firmware power-off. The process is: after pressing button, B electrode of Q4

becomes low level, Q4 is on, BATT charges C87 through CE electrode of Q4 and R93, voltage on

capacitor increases gradually to make Q7 on, VCC is grounded through CE electrode of Q7, enable end

EN is low level, TPS62200 and TPS79333 stop voltage output and the player power off. When loosening

button, BATT makes START pin keeps in high level through R89, R90 to make Q5 on, electric charge

saved in C87 discharges quickly through CE electrode of Q5, R22 and R94 to ensure normal power-on

when pressing START/PLAY/PAUSE button next time.

3.2.15 MIC circuit

1. MIC circuit diagram is shown in the picture 3.2.15.1:

MICBIAS

R27

MIC1

1 2

MICROPHONE

Figure 3.2.15.1 MIC circuit diagram

2.2K

R6 47K

C37

221

C7

MIC

105

2. Working principle: MIC circuit is mainly composed of microphone and MIC bias circuit. MIC1

switches the recorded external voice signals into electric signals to input to ADC circuit of Wm8750 and

switches analog signals into digital signals to form WAV file through software encoding to save inside

FLASH. R27 in circuit is bias resistor of microphone, R6 and C37 constitute filtering circuit to filter the

clutter of audio signals.

- 29 -

Section Three Servicing Cases

3.3.1 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 power on and connecting, there is no 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 voltage on two ends of L13 and find that

1.8V only has 0.7V. Observe DC-DC switch IC U6 carefully and find that pin 4 feedback has rosin joint.

After welding again, trouble is removed.

[ Example 3 ] Symptom: machine not power on.

Description: after pressing ON button, screen has no display and headphone has no output.

Analysis and troubleshooting: connect Mp4 player with computer and there is no display. Test

charge current and find that current is large. Open machine casing to test and current is normal. Power

on again and it is normal, so we preliminarily judge that short-circuit in a certain position causes the

trouble. Observe carefully and find that two lead wires of buzzer have been damaged to cause the inner

part show outside and short-circuit with bottom casing, which makes working current of the player large.

After installing battery, machine cannot power on. Change buzzer lead wire, test and trouble is removed.

- 30 -

[ Example 4 ] 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 U1 (TEA5767HN) has false welding. After welding again, trouble is

removed.

[ Example 5 ] Symptom: no sound when pressing button.

Description: no click sound when pressing buttons.

Analysis and troubleshooting: if no click sound when pressing buttons, firstly check whether sound

of pressing button has been opened. After confirming it is opened, check whether buzzer is normal. Use

resistance level of multmeter to test and the resistance is ten-ohm and more, which is normal. Check J3

end voltage 1.6V and it is normal. When pressing buttons, test DIDI signals and find there is no change.

Check whether crystal oscillator U10 oscillates normally and there is no oscillation. After changing U10,

trouble is removed.

[ Example 6 ] 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 L10 and it is about 4.3V, which is normal. Then

test voltage on two ends of D8 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 7 ] 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 U1. Test power supply 3.3V voltage of U1

and it is normal. Change SDRAM directly and trouble is removed.

- 31 -

[ Example 8 ] 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.

[ Example 9 ] 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 10 ] 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. Test 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.

- 32 -

3.3.2 Troubleshooting diagram

1. Troubleshooting flow chart for “No OSD” is shown in the picture 3.3.2.1:

No OSD

Whether

D3 anode 12V voltage

is normal

Y

Whether there is 12V

voltage on display

screensocket

Y

Whether 3.3V

power supply is normal

Y

Whether it is

normal after changing

display screen

components

Y

N

Check DC-DC boost circuit and peripheral elements

N

Check whether display screen flat cable holderhas false welding

N

Display screen flat cable holder has false welding

N

Display screen flat cable holder has trouble

Whether 8-digit number

of screen is normal

Y

Change display screen components

N

Change decode chip

Figure 3.3.2.1 Troubleshooting diagram for “No OSD”

- 33 -

2. Troubleshooting flow chart for “USB is not connected” is shown in the picture 3.3.2.2:

USB is not connected

Check whether 5V of Q2 is grounded

normally

Y

Check whether 3.3V and 1.8V are normal

whether oscillation

of 12M crystal oscillator

D+, D- resistance

software upgrading is

Y

Check

is normal

Y

Check

to ground

Y

Whether

available

N

Q2 has trouble or USB socket has rosin joint

N

Check each DC-DC switch circuit and peripheral elements

N

Change crystal oscillator or capacitor n two sides

N

Check whether T1 or USB socket has rosin joint

N

Change the main decode chip

Y

Upgrade software

Figure 3.3.2.2 Troubleshooting diagram for “USB is not

- 34 -

3. Troubleshooting fow chart for “Do not charge” is shown in the picture 3.3.2.3:

Do not charge

Whether

battery is fully

charge with voltage

4.2V-4.3V

Y

Battery

is fully charged,

then protection

Y

Normal after discharge

Figure 3.3.2.3 Troubleshooting diagram for “Do not charge”

N

whether USB_VBUS

has 5V voltage

Whether

BAT voltage has

change

Battery components have trouble change battery or battery holder

Check

Y

N

Check power supply circuit

Y

N

Change IC ISL6294

- 35 -

4. Troubleshooting flow chart for "Power not on" is shown in the picture 3.3.2.4:

Power not on

Check charge circuit

Check U16 and peripheral circuit

Check U6 and peripheral circuit

Whether battery

voltage is lower than

3.4V

Y

N

Whether battery

voltageis up to 3.6V

after charge

Y

N

whether U6 outputs 1.8V

Refer to troubleshooting process for "Machine not power on"

Check

whether U16 outputs

3.3V normally

Y

Check

normally

Y

N

Whether there is OSD

after connecting with

Whether U16 input

pin voltage is up to

BGA has trouble

computer

Y

5V

Y

N

Change battery components

N

Check D5 and Q2

Figure 3.3.2.4 Troubleshooting diagram for “Power not on”

- 36 -

5. Troubleshooting flow chart for “Machine not power on” is shown in the picture 3.3.2.5:

Machine not power on

Change crystal oscillator

Check reset circuit

Whether

3.3V, 1.8V voltage output is normal

Y

N

Whether

crystal oscillator Y1

has normal

oscillation

Y

Whether

reset circuit is normal

Y

Change the main decode chip

Whether

N

software upgrading

is available after connecting

with computer

Whether

it is normal

after upgrading

software

Trouble is removed

Check USB terminal welding

N

A

Y

N

Change the main decode chip

Y

A

Test

N

whether DM,

DP resistance to

ground is

normal

Y

Change the main decode chip

Figure 3.3.2.5 Troubleshooting diagram for “Machine not

- 37 -

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.

2. VDD waveform diagram

- 38 -

3. VCC waveform diagram

4. Display screen background light BCLK waveform diagram

5. PLAY1 waveform diagram when playing.

- 39 -

6. OUT_R waveform diagram when playing musical files.

7. OUT_L waveform diagram when playing musical files.

8. Crystal oscillator Y1 waveform diagram

- 40 -

9. U6 DC-DC switch waveform diagram

10. Power-on reset RESETN waveform diagram

11. Crystal oscillator XT1 waveform diagram

- 41 -

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

- -

42

3. PIN Description

SYMBOL TYPE DESCRIPTION

CLK Clock

CKE Clock Enable

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

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

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

Data Output Power/Ground Power supply for output buffers

The system clock input. All other inputs are registered to the SDRAM on the rising edge of CLK Controls internal clock signal and when deactivated, the SDRAM will be one of the states among power down, suspend or self refresh

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

NC No Connection No connection

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

- -

43

· 56K words Program Sync SRAM

· 48K words Data Sync SRAM

· 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 RREF I

2 AGND P

3 DM A I/O

4 DP A I/O

Reference Resistor input

Analog GND

USB data minus

USB data plus

5 VCCA P

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

7 D1 I/O Pull up

8 D2 I/O Pull up

9 D3 I/O Pull up

- -

44

Analog 3.3V power input

Flash/ LCD/ SDRAM data bus bit 1

Flash/ LCD/ SDRAM data bus bit 2

Flash/ LCD/ SDRAM data bus bit 3

10 D4 I/O Pull up

Flash/ LCD/ SDRAM data bus bit 4

11 D5 I/O Pull up

12 D6 I/O Pull up

13 D7 I/O Pull up

14 RD/BY I, Pull up

15 FREN O

16 FWEN O

17 FWP O

18 VDD P

19 VSSD P

20 VCC P

21 P2.4/A0 I/O

22 P2.5/A1 I/O

23 P2.6/A2 I/O

24 P2.7/A3 I/O

25 A4 O

Flash/ LCD/ SDRAM data bus bit 5

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

26 A5 O

27 A6 O

28 A7 O

29 A8 O

30 A9 O

31 A10 O

32 A11 O

33 A12 O SDRAM Address Bit 12 SRAM Address Bit 11

34 BA0 O SDRAM Bank Address 0 SRAM Address Bit 12

35 BA1 O SDRAM Bank Address 1 SRAM Address Bit 13

36 CKE O SDRAM clock enable to SDRAM

37 CLK O system clock to SDRAM

38 P2.8/WEN I/O

39 P2.9/CASN I/O

40 P2.10/RASN I/O

SDRAM/ SRAM Address Bit 5

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

41 P2.11/CSN I/O

42 VSSD P Digital Ground

- -

45

SDRAM chip strobe GPIO

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

44 P2.0/SDDO I/O

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

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 I/O Pull up & EN GPIO

56 P0.5 I/O Pull up & EN GPIO

57 P0.6 I/O Pull up & EN GPIO

58 P0.7 I/O Pull up & EN GPIO

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

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

I/O POWER(3.3V)

Digital Ground

Digital Core power(1.8V)

GPIO, External int0

GPIO, External int1

59

60

61

62

63

64

65

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

69

70

71 IREF O Bias current reference of CODEC

P1.1/ I2C_SDA

P1.2/ I2C_SCL

P1.3/ I2SMCLK

P1.4

DAC_LRCK

P1.5/

ADC_LRCK

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

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

I Mic single-end analog input

GPIO, External SDA of I2C

GPIO, External SCL of I2C

GPIO, I2SMCLK of External CODEC

GPIO, DAC LRCK of External CODEC

GPIO, ADC LRCK of External 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

- -

46

75 AOL O L-channel single ended analog output

76 VSSAO P Negative power supply to output amplifiers

77 AOM O Common mode analog output

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, (Internal 100K pull up)

86 A16 O SRAM Address Bit 16

87 A17 O SRAM Address Bit 17

88 A18 O SRAM Address Bit 18

89 A19 O SRAM Address Bit 19

90 A20 O SRAM Address Bit 20

91 DQM0 O SDRAM DQM0

92 DQM1 O SDRAM DQM1

93 A14 O SRAM Address Bit 14

94 A15 O SRAM Address Bit 15

95 VSSD P LDO33 ground

96 VCC33 P LDO33 3.3V power rail

Digital Core power(1.8V)

I/O POWER(3.3V)

Digital Ground

97 VBAT42 P LDO33 Power input

98 VCC33 P Voltage output

99 VSSD G LDO33 ground

100

101 REXT100K I

102 LRADC3 I Low resolution ADC input3

103 LRADC2 I Low resolution ADC input2

104 LRADC1 I Low resolution ADC input1

105 LRADC0 I Low resolution ADC input0

106 VDDPLL P Analog power of PLL

107 VSSPLL P Analog GND of PLL

- -

VCCA P

ADC 3.3V power input，ADC reference

ADC reference Resistor input

47

108 XIN I, OSC

109 XOUT O, OSC Crystal 24MHz OSC output PAD

Crystal 24MHz OSC input PAD

110 VDD P

111 VSSD G

112 VCC P

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

114 TEST I, Pull down Test mode, ( Internal 100K pull down)

115

116 D8/P3.0 I/O

117 D9/P3.1 I/O

118 D10/P3.2 I/O

119 D11/P3.3 I/O

120 D12/P3.4 I/O

121 D13/P3.5 I/O

122 D14/P3.6 I/O

123 D15/P3.7 I/O

124 LCDRDN O LCD Read execution pin

P1.0/ NORCSN

I/O Pull up & EN

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)

GPIO, NOR FLASH Chip select

Flash/ LCD/ SDRAM data bus bit 8 GPIO

Flash/ LCD/ SDRAM data bus bit 9 GPIO

125 LCDWRN O LCD Write execution pin

126 LCDCSN O LCD driver chip select

127 FCE0 O Flash chip select 0

128 VDDA P

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

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

- -

48

◆ 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

◆ 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

3

4

5

6

FB

EN

OVP

VDD

I

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 TPS62200

1. Description

The TPS6220x devices are a family of high-efficiency synchronous step-down converters ideally suited for portable systems powered by 1-cell Li-Ion or 3-cell NiMH/NiCd batteries. The devices are also suitable to operate from a standard 3.3-V or 5-V voltage rail.

With an output voltage range of 6.0 V down to 0.7 V and up to 300 mA output current, the devices are ideal to power low voltage DSPs and processors used in PDAs, pocket PCs, and smart phones. Under nominal load current, the devices operate with a fixed switching frequency of typically 1 MHz. At light load currents, the part enters the power save mode operation; the switching frequency is reduced and the quiescent current is typically only 15 µA; therefore it achieves the highest efficiency over the entire load current range. The TPS6220x needs only three small external components. Together with the tiny SOT23 package, a minimum system solution size can be achieved. An advanced fast response voltage mode control scheme achieves superior line and load regulation with small ceramic input and output capacitors.

2. Features

◆ High Efficiency Synchronous Step-Down Converter With up to 95% Efficiency

◆ 2.5 V to 6.0 V Input Voltage Range

- -

49

◆ Adjustable Output Voltage Range From 0.7 V to VI

◆ Fixed Output Voltage Options Available

◆ Up to 300 mA Output Current

◆ 1 MHz Fixed Frequency PWM Operation

◆ Highest Efficiency Over Wide Load Current Range Due to Power Save Mode

◆ 15-µA Typical Quiescent Current

◆ Soft Start

◆ 100% Duty Cycle Low-Dropout Operation

◆ Dynamic Output-Voltage Positioning

◆　 Available in a Tiny 5-Pin SOT23 Package

3. PIN Description

PIN No. Symbol I/O Description

1

2

3

4

5

VI

GND

EN

FB

SW

I

I/O

Supply voltage pin

Ground

The enable pin of the device

The feedback pin of the device

The switch pin

3.5.5 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

- -

50

◆ 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

◆ 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

3.5.6 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

- -

51

◆ 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

◆ 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

- -

52

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

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

3.5.7 Function introduction to M41T62

1. Description

The M41T6x Serial Access TIMEKEEPER oscillator (external crystal controlled). Eight registers are used for the clock/calendar function and are

®

is a low power Serial RTC with a built-in 32.768kHz

configured in binary coded decimal (BCD) format. An additional 8 registers provide status/control of Alarm, 32KHz output, Calibration, and Watchdog functions. Addresses and data are transferred serially via a two line, bi-dire ctional I2C interface. The built-in address register is incremented automatically after each WRITE or READ data byte.

- -

53

Functions available to the user include a time-of-day clock/calendar, Alarm interrupts (M41T62/65), 32KHz output (M41T64), programmable Square Wave output (M41T62/63/64), and Watchdog output (M41T63/65). The eight clock address locations contain the century, year, month, date, day, hour, minute, second and tenths/hundredths of a second in 24 hour BCD format. Corrections for 28-, 29- (leap year), 30and 31-day months are made automatically.

The M41T6x is supplied in a 16-pin QFN.

2. Features

◆ Counters for tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, year, and

century

◆ 32 KHz crystal oscillator integrating load capacitance and high crystal series resistance operation

◆ Oscillator stop detection monitors clock operation

◆ Serial interface supports I2C bus (400kHz)

◆ 350nA timekeeping current @ 3V

◆ Low operating current of 35µA (@400kHz)

◆ Timekeeping down to 1.0V

◆ 1.3V to 4.4V I2C bus operating voltage

◆ 32KHz square wave on power-up to drive a microcontroller in low power mode

◆ Programmable alarm with interrupt function

◆ Accurate programmable watchdog (from 62.5ms to 31 min)

◆ Software clock calibration to compensate deviation of crystal due to temperature

◆ Automatic leap year compensati　

◆ Operating temperature of –40 to 85°C

◆ Lead-free 16-pin QFN package

◆ Lithium ion rechargeable operation　

3. PIN Description

PIN No. Symbol I/O Description

1 XI I Oscillator input

2 XO O Oscillator output

3, 5 GND

4 SQW I Programmable square wave

6, 7, 8, 12, 13, 15 ,16

9 SDA I/O Serial data input/output

10 SCL I Serial clock input

11 IRQ/OUT O Interrupt or OUT output (open drain)

- -

NC Not Used

54

14 VCC P Supply voltage

3.5.8 Function introduction to WM8750BL

1. Description

The WM8750L is a low power, high quality stereo CODEC designed for portable digital audio applications.

The device integrates complete interfaces to stereo or mono microphones and a stereo headphone. External component requirements are drastically reduced as no separate microphone or headphone amplifiers are required. Advanced on-chip digital signal processing performs graphic equaliser, 3-D sound enhancement and automatic level control for the microphone or line input.

The WM8750L can operate as a master or a slave, with various master clock frequencies including 12 or 24MHz for USB devices, or standard 256fs rates like 12.288MHz and 24.576MHz. Different audio sample rates such as 96kHz, 48kHz, 44.1kHz are generated directly from the master clock without the need for an external PLL.

The WM8750L operates at supply voltages down to 1.8V, although the digital core can operate at voltages down to 1.42V to save power, and the maximum for all supplies is 3.6 Volts. Different sections of the chip can also be powered down under software control.

The WM8750L is supplied in a very small and thin 5x5mm QFN package, ideal for use in hand-held and portable systems.

2. Features

◆ DAC SNR 98dB (‘A’ weighted), THD –84dB at 48kHz, 3.3V

◆ ADC SNR 95dB (‘A’ weighted), THD -82dB at 48kHz, 3.3V

◆ Complete Stereo / Mono Microphone Interface

·Programmable ALC / Noise Gate

◆ On-chip 400mW BTL Speaker Driver (mono)

◆ On-chip Headphone Driver

·>40mW output power on 16O / 3.3V

·THD –80dB at 20mW, SNR 90dB with 16O load

·No DC blocking capacitors required (capless mode)

◆ Separately mixed mono output

◆ Digital Graphic Equaliser

◆ Low Power

·7mW stereo playback (1.8V / 1.5V supplies)

·14mW record & playback (1.8V / 1.5V supplies)

◆ Low Supply Voltages

- -

55

·Analogue 1.8V to 3.6V

·Digital core: 1.42V to 3.6V

·Digital I/O: 1.8V to 3.6V

◆ 256fs / 384fs or USB master clock rates: 12MHz, 24MHz

◆ Audio sample rates: 8, 11.025, 16, 22.05, 24, 32, 44.1, 48, 88.2, 96kHz generated internally from

master clock

◆ 5x5x0.9mm QFN package

3. PIN Description

PIN NO

1 MCLK Digital Input Master Clock 2 DCVDD Supply Digital Core Supply 3 DBVDD Supply Digital Buffer (I/O) Supply 4 DGND Supply Digital Ground (return path for both DCVDD and DBVDD) 5 BCLK Digital Input / Output Audio Interface Bit Clock 6 DACDAT Digital Input DAC Digital Audio Data 7 DACLRC Digital Input / Output Audio Interface Left / Right Clock/Clock Out 8 ADCDAT Digital Output ADC Digital Audio Data

9 ADCLRC Digital Input / Output Audio Interface Left / Right Clock 10 MONOOUT Analogue Output Mono Output 11 OUT3 Analogue Output Analogue Output 3 (can be used as Headphone Pseudo Ground) 12 ROUT1 Analogue Output Right Output 1 (Line or Headphone) 13 LOUT1 Analogue Output Left Output 1 (Line or Headphone) 14 HPGND Supply Supply for Analogue Output Drivers (LOUT1/2, ROUT1/2)

NAME TYPE DESCRIPTION

15 ROUT2 Analogue Output Right Output 1 (Line or Headphone or Speaker) 16 LOUT2 Analogue Output Left Output 1 (Line or Headphone or Speaker) 17 HPVDD Supply Supply for Analogue Output Drivers (LOUT1/2, ROUT1/2, MONOUT) 18 AVDD Supply Analogue Supply 19 AGND Supply Analogue Ground (return path for AVDD) 20 VREF Analogue Output Reference Voltage Decoupling Capacitor 21 VMID Analogue Output Midrail Voltage Decoupling Capacitor 22 MICBIAS Analogue Output Microphone Bias

23

24 LINPUT3 Analogue Input Left Channel Input 3 25 RINPUT2 Analogue Input Right Channel Input 2

- -

RINPUT3 /

Analogue Input Right Channel Input 3 or Headphone Plug-in Detection

HPDETECT

56

26 LINPUT2 Analogue Input Left Channel Input 2 27 RINPUT1 Analogue Input Right Channel Input 1 28 LINPUT1 Analogue Input Left Channel Input 1 29 MODE Digital Input Control Interface Selection 30 CSB Digital Input Chip Select / Device Address Selection 31 SDIN Digital Input/Output Control Interface Data Input / 2-wire Acknowledge output 32 SCLK Digital Input Control Interface Clock Input

3.5.9 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

- -

57

Chapter Four

Assembly and Disassembly Process

In order to get to know the structure of V3more easily and directly, now we use pictures to present each key point of disassembly and assembly process before all users to prevent users from operating blindly and to damage 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 be removed static before using!

4.1 Disassembly process of the player

1. Use cuspidal forceps to take out the LOCK button.

3. Use a slice with thickness about 0.1mm to in sert into the gap of the glass prized up and then peel off glue of the glass slowly to tale out the glass. Pay attention not to damage touch button FPC.

2. Insert the forceps into the lock hole and then prize up one corner of the glass.

4. After peeling off glue of the glass, use nails to take out the glass.

- 58 -

5. Insert the 4 special slice clasp instruments into the relevant position of the 4 clasps.

6. Use the special hook tool, shown in the picture,to remove the middle casing.

7. Remove FPC flat cable clasp and then use forceps to take out FPC flat cable.

9. Use iron to weld to separate the batter and buzzer lead wire on main board.

8. Use electric screwdriver or “+”-shaped screwdriver to take out 2 screws of main board.

10. Take out main board components.

- 59 -

11. Take out battery components.

13. Take out display screen components from the direction shown in the picture

4.2 Assembly process of the player

12. Take out the stainless steel cover board on rear side of display screen.

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

reverse.

- 60 -

Chapter Cinque

PCB board & Circuit diagram

Section One PCB board

5.1.1 Surface layer of Main Board

- 61 -

5.1.2 Bottom layer of Main Board

- 62 -

FM_3V3

C56 101

FM_ANT

O603CS

MURATA COILCRAFT TOKO SMD

LLQ1608-AR10G

FM_3V3

R69 22R

C68 104

FSGND

A

O603CS

L17 33nH±2%

MURATA COILCRAFT OR TOKO SMD LLQ1608-A33NG

C66 103

L18 33nH±2%

MURATA COILCRAFT OR TOKO SMD LLQ1608-A33NG

R73 22R

D10

BB202

D11

BB202

FM_3V3

FDGND

C76 104

L16 120nH

C57 27PF

FDGND

C59

47PF

R70 100K

FSGND

R68 10K

C65 393

L23 601 DCR<350mΩ

L24

C58 472

40

1

N.C

2

CPOP

3

VCOT1

4

VCOT2

5

VCOVCC

6

DGND

7

DVCC

8

DATA

9

CLOCK

10

N.C

FDGND

601 DCR<350mΩ

38

36

33

31

35

37

32

34

39

N.C

RFI2

TCAGC

LOOPSW

TEA5767HN

NECTAR-IO603CS

W/R11BUSM12BUSEN13SWP114SWP215XTAL116XTAL217PDLF18PHLF19N.C

FM_3V3

I2C_SDA

RFI1

AVCC

RFGND

I2C_SCL

N.C

IFGAI

AGND

TMUTE

20

C60 475/X5R

R67 18K

N.C DIFL2 DIFL1

TCIFC

VREF

MPXO

RAVO

LAVO

N.C

R66 10R

C61 473

C62 473

C63 473

C64 333

U9

FSGND

30 29 28 27 26 25 24 23 22 21

XT1

32.768KHz

OR 13MHz CRYSTAL

FDGND

C71 102

C67 333

FSGND

601 DCR<350mΩ

L7

L8

601 DCR<350mΩ

C73 22PF

FDGND FDGND

R72 33K

C74 223

FSGND

FDGND

C72 223

5767R

FDGND

C75 102

VCC

D_GND

L19 1 0UH/2012

C50 105

106/X5R

D_GND

C69

R71

FDGND

0R

FSGNDFDGND

FDGND

FM_3V3

C70 104

63 -

-

Section Two Circuit diagram

2SJ-A382-001(HP-DC)

CN1

FM_ANT2

J1

+5V

D-

NC

D+ GND IN_L IN_R GND

3DU05S-32T-10

J2

8 7 6 5 4 3 2 1

K1 K2 K3 K4 K5 K6

1 2 3 4 5 6 7 8

VLED

1 3 4 5

D_GND

L5

601/0603

L1 601/0603

L3 601/0603

R102 0R*

D_GND

C6

D_GND D_GND

Q15

SS8550LT

R81 10K

PSOC_SCL

PSOC_SDA

OUT_R1

SFI0402-050E100NP

L6 680

C8

SFI0402-050E100NP*

D_GND

R82 47K

R74

R75

10K

VCC

OUT_L1

4

5

162

3

RCLAMP0504F/SC-70 6L

GND

D_GND

R5

470R

SS8550LT

Q2

601 DCR<350mΩ

L2

L4

601 DCR<350mΩ

C9

SFI0402-050E100NP*

VCCVLED

LED_CON

R4 100R R9 100R

D1

D_GND

SCL

R99

1K

C4

104

+5V

SPEAKER_OUTL

SPEAKER_OUTR

R100 1K

C31

220UF/4V

C32 220UF/4V

D_GND

R3 12K

R8 10K

U15

1

P07

2

P05

3

P03

4

P01

5

P27

6

P25

7

P23

8

P21

9

VSS

10

P17

11

P15

12

P13

13

SCL

14

VSS

HP_OUTL

R83 10R

104

C3

USB_VBUS 2

1 3

CY8C21534

HP_OUTR

R84 10R

C92

C90

104

USB_DET

T1

SDCW2012-2-900T

2 4

R11 1M

D_GNDD_GND

VDL

28

VDD

27

P06

26

P04

25

P02

24

P00

23

P26

22

P24

21

P22

20

P20

19

XRES

18

P16

17

P14

16

P12

15

SDA

USB_DET 2

R12

1M

VDL

C30 105

GND

K4

K5

K6 K3 K2 K1

SDA

R103

XRES

USB_DM

USB_DP

10K

5767L

5767R

2

INT

VCC

R1 100R

R2 100R

HOLD

P1

601 DCR<350mΩ

L20

MCLK#

VCC

R34 10K*

R78 100K

P4

P2

D_GND

BCLK

D_GND

R41

4.7K*

MIC1

1 2

MICROPHONE

R33

0R*

Q6

SS8550LT

R77

4.7K

Q10 MMST3904

D_GND

P5

P6

DBVDD

VCC

C84

104

ADCLRC DACLRC DACDAT ADCDAT

R23 4.7K

I2C_SDA I2C_SCL

C1

C2 105

R80

4.7K*

VDL

P9 P13

P8

P7P3

C89

106/X5R

105

MICBIAS

R27

2.2K

R6 47K

P10

P11

C37

221

P12

105

C97

U11

104

WM8750

3

DBVDD

2

DCVDD

18

AVDD

17

HPVDD

1

MCLK

5

BCLK

9

ADCLRC

7

DACLRC

6

DACDAT

8

ADCDAT

29

MODE

MONOOUT

30

CSB

31

SDIN

32

SCLK

28

LINPUT1

27

RINPUT1

C7

MIC

P14

LINPUT2

RINPUT2

LINPUT3

RINPUT3

DGND

HPGND

AGND

LOUT2

ROUT2

OUT3

LOUT1

ROUT1

MICBIAS

VREF

VMID

26 25 24 23

4 14 19

16

15

10

11

13

12

22

20

21

DIDI

MIC

SPEAKER_OUTL

SPEAKER_OUTR

D_GND

HP_OUTL VREF

HP_OUTR

C82

104

VREF

106/X5R

MICBIAS

C83

D_GND

R47 10K

R79 4.7K

R91 4.7K

C80

104

105

C51

R48 47K

C78

C81

106/X5R

VCC

D_GND

C52

104

12

C53

105

C79

106/X5R

R49 0R

J3

Q9 MMST3904

105

R31 1K

C54

105

64 -

-

R21 220K

R22 1M

C19 104

D_GND

VCC

U1

HY57V641620ETP

1

VDD

D0

2

C35 106/X5R

D1 D2

D3 D4

D5 D6

D7 DQM0

WEN CASN RASN CSN BA0 BA1 A10 A0

A3

R24 33R

R26 33R

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

BACK_EN

BACK_L

DQ0 VDDQ NC DQ1 VSSQ NC DQ2 VDDQ NC DQ3 VSSQ NC VDD DQM0 WEN CASN RASN CS BA0 BA1 A10AP A0 A1 A2 A3 VDD

SDRAM

R50

4.7K

MCLK#

C27 6P

D_GND

R59 1K

VCC

R61 0R*

C18

104

GND

FALE/RS/A1

FCLE/A2

C22

104

D_GND

I2C_SCL

I2C_SDA

MCLK

CLK

L9 601/0603

VB

Á ?8825598虾牛

54

VSS

D15

53

DQ7

52

VSSQ

VDDQ

VSSQ

VDDQ

DQM1

R51

4.7K

R60 10K

D14

51

NC

D13

50

DQ6

49

D12

48

NC

D11

47

DQ5

46

D10

45

NC

D9

44

DQ4

43

D8

42

NC

41

VSS

40

NC

DQM1

39

CLK#

38

CLK

CKE

37

CKE

A12

36

A12

A11

35

A11

A9

34

A9

A8

33

A8

A7

32

A7

A6

31

A6

A5

30

A5

A4

29

A4

28

VSS

D_GND

MCLK#

CLK#

C29 6P

L10

CDRH3D16-100

R63

0R*

RT9284B

MBR0520/SOD123

6

LX1VCC

4

5

EN

OVP

2

3

GND

FB

U3

C46

104

D_GND

C47

104

D_GND

65 -

D3

C5 102

R30 12R±1%

LED-

D_GND

L11 601/0603

C36

106/16V/1206

LEDP

LED+

-

VCC VDD

R15 1M

XOUT

C12 20PF/NPO

GND GND

C15

+

106/X5R

C17

104

DM DP

D0 D1 D2 D3 D4 D5 D6 D7

RD/BY FREN

FWEN FWP

A0

A3 A4 A5 A6 A7 A8 A9

A10 A11

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 32

U2

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

A12

GND

R19 10K

GND

VCC

106/X5R

GND

VCC

R20 10K

RESETN

R56 0R

Q3SS8050LT

C23 104

GND

USB_DM2 USB_DP2

+

C20

C21 104

VDD

C24

104

FALE/RS/A1

C28 104

FCLE/A2

VCC

A1233BA0

BA0

LCDWRN

FCE0CKE

LCDCSN

LCDRDN

127

126

128

124

125

FCE0

VDDA

LCDCSN

LCDRDN

LCDWRN

P2.9/CASN39P2.10/RASN40P2.11/CSN41GND42P2.13/PWM043P2.0/SDDO44P2.1/SDDI45P2.2/SDCLK46P2.3FCE1/SDCS47VCC48VSSD49VDD

BA135CKE36CLK37P2.8/WEN

34

38

CSN

CLK

BA1

CASN

WEN

RASN

GND

D15

123

P3.7/D15

BACK_L

Y1

24MHz

D14

D13

121

122

P3.5/D13

P3.6/D14

128-Pin TQFP

DFU

CHG_OK

LED_CON

2

XIN

C13 20PF/NPO

D10

D12

D11

118

119

120

P3.3/D11

P3.4/D12

RK2608

FCE1

VCC

C33 104

GND

C10 104

2

V_ADJ

D9

D8

RESETN

114

112

116

117

113

115

TEST

P3.0/D8

P3.1/D9

RESETN

P3.2/D10

P1.0/NORCSN

P0.3

P0.051P0.1

P0.253P0.455P0.556P0.657P0.758P1.1/I2C_SDA

54

50

52

2

INT

HOLD

USB_DET

VDD

C34 104

PSOC_SCL

GND

110

111

VCC

VSSD

BACK_EN

PSOC_SDA

PLAY/PAUSE

VDD

OFF

105

XOUT

109

XOUT

2

C14

GND

XIN

108

107

XIN

VSSPLL

P1.2/I2C_SCL60P1.3/I2SMCLK61P1.4/DAC_LRCLK62P1.5/ADC_LRCLK63P1.6/SDI

59

I2C_SDA

I2C_SCL

MCLK

I2C_SCL

I2C_SDA

2

BATT

BAT_DET

106

105

VDDPLL

LRADC0

DACLRC

R16 100K±1%

R17 100K±1%

2

C38 104

GND

VCC1V8

101

104

103

102

LRADC1

LRADC2

LRADC3

HP_SENSE

64

ADCDAT

ADCLRC

GND

99

100

VSSD

VCCA

REXT100K

VCC33

VSSD

DQM1 DQM0

IBOOT

VSSD

VDDAO

AOMS

AOM

VSSAO

VDDA VSSA

VCOM

IREF

P1.7/SDO

R18 100K

VCC

+

C16

106/X5R

97

98

GND

088

料号：

VCC33

VBAT42

A15 A14

A20 A19

A18 A17

A16

VCC VDD

AOR

AOL

MIC

AIR2

AIL2

AIR1

AIL1

3193

96 95 94 93

DQM1

92

DQM0

GND

DACDAT

GND

C26

104

VCC VDD

C25

104

91 90

89 88 87

86 85

84 83 82 81 80 79 78 77 76 75 74

73 72 71 70 69 68 67 66 65

VCC

NAND Flash

48

NC

47

NC

46

NC

45

NC

44

I/O7

43

I/O6

42

I/O5

41

I/O4

40

NC

39

NC

38

PRE

37

VCC

36

VSS

35

NC

34

NC

33

NC

32

I/O3

31

I/O2

30

I/O1

29

I/O0

28

NC

27

NC

26

NC

25

NC

D7 D6 D5 D4

R55 0R

D3 D2 D1 D0

D_GND

BATT

R76

0R

M41T62

U10

16

NC6NC7NC

14

NC13NC15NC

IRQ11VCC

I2C_SCL

10

SCL

I2C_SDA

9

SDA

SQW

8

4

DIDI

2

VCC

C42 104

C77 6PF*

XT2

1

OSCI

2

OSCO

3

GND

5

GND

OSCO

D_GND

OSCI

32.768KHZ

RD/BY

FREN

FCLE/A2

FALE/RS/A1

FWEN

FWP

1 2 3 4 5 6 7 8

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

U5

RES# NC NC NC NC R/B2 R/B1 RE CE1 CE2 NC VCC VSS NC NC CLE ALE WE WP NC NC NC NC NC

NAND FLASH

R37 10K

RD/BY

FREN

FCLE/A2

FALE/RS/A1

FWEN FWP

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

U4

RES# NC NC NC NC R/B2 R/B1 RE CE1 CE2 NC VCC VSS NC NC CLE ALE WE WP NC NC NC NC NC

NAND FLASH

R36

R35

47K

FCE0 FCE1

VCC

C39 104

GND

R40

47K

NAND Flash

48

NC

47

NC

46

NC

45

NC

44

I/O7

43

I/O6

42

I/O5

41

I/O4

40

NC

39

NC

38

PRE

37

VCC

36

VSS

35

NC

34

NC

33

NC

32

I/O3

31

I/O2

30

I/O1

29

I/O0

28

NC

27

NC

26

NC

25

NC

D7 D6 D5 D4

R32 0R

D3 D2 D1 D0

I2C_SDA

R38 0R

I2C_SCL

VCC VCC

C40 104

R39 0R

C41 104

D_GNDD_GND

CN2

1 2 3 4 5

240*320(RGB)

6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

FALE/RS/A1

24 25

D_GND

26 27 28

28pin

D_GND LCD_3V3

LCDCSN LCDRDN

D0 D1 D2 D3 D4 D5 D6 LCDCSN D7 LCDRDN D8

D10 D11 D12 D13 D14

R29

D15

0R

LCDWRN

LED+ LED-

D_GND

LCD_3V3

RESETN

C49 105

LCDWRND9 FALE/RS/A1

VCC

R13

R7

R25

R28

10K

L12 601/0603

D_GND

LCD_3V3

C43

105

USB_VBUS3

CHG_OK2

R52 0R

VCC

R54 10K

USB_VBUS

D_GND

C96

475

VIN

5V

U8

1

VDD

2

VDD

5

START NC7VSS

MCP73832T

P_GND

VBAT

PROG

VBAT

R101 1K

4 8 3 6

D_GND

D5 BAT43WS

R14 100R

BAT

G

R53

2.7K±1%

D_GND

VB

P_GND

Q1 SI2305DS SOT23

D S

BAT

BAT1

BATT

C99 105

C91 106/X5R

C45 106/X5R

D_GND

R98 68K

P_GND

EN

P_GND

CN3

1

BAT

2

U16

1

VIN

2

GND EN3BYPASS

TPS79333DBVR SOT23-5

C93 102

P_GND

5

VOUT

4

C94 103

P_GND

USB_VBUS3

C88 SFI0402-050E100NP

VCC

C95 106/X5R

P_GND

U6

1

VI

2

GND

3

EN

TPS62200/FAN5307* SOT23-5

V_ADJ

2

D15 1N4148WS

XC6206P152

2

VI

U14

1

GND

EN

VOUT

5

SW

4

FB

R45

10k

3

R46 47k

R86 330K

R64 100K

R44

390K±1%

R87 330K

R88 1M

P_GND

L13 CDRH3D16-100

R42

240K±1%

D_GND

Q8

MMST3904

D_GND

VCC

1N4148WS

Q7 SS8050LT

VCC1V8

R43

100K±1%

D8

R94

100K

Q5 SS8050LT

2

C44 47PF

C98 101

MMST3906

R92

330K

C87 475/X5R

P_GND

VDD

C48

106/X5R

D_GND

BATT

Q4

R97 1M

R93 10M

VDD

P_GND

R89 10K

R95 47K

R96

2.7M

START

D_GND

R90 10K

START

D12

1N4148WS

R65 10K

P_GND

PLAY/PAUSE2

START

C85

SFI0402-050E100NP

SFI0402- 050E100NP

OFF 2

PLAY

P_GND

R10 1K

SW2

DFU

D_GND

P_GND

C86

R57 47K

VCC

HOLD

R85

100k

D9 1N4148WS

L22 601 DCR<350mΩ

R58 47K

VCC

DFU

SW1

1

2

3

4

SK??

66 -

-

P_GND

A_GND

5V

D5

USB_VBUS

USB_VBUS3

BAT43WS

C45 106/X5R

P_GNDP_GND

U6

1

VI

2

GND

3

EN

TPS62200/FAN5307* SOT23-5

SW

FB

5 4

R44

390K±1%

L13 CDRH3D16-100

R42

240K±1%

C44 47PF

R43 100K±1%

VDD

C48

106/X5R C98 101

D_GND

VDD

USB_VBUS3

C88 SFI0402-050E100NP

P_GND

2

V_ADJ

D15 1N4148WS

R45

10k

R46 47k

R86 330K

Q8

MMST3904

D_GND

67 -

-

R7,R8,R13,R19,R20,R25,R28,R37,R45,R47,R5

Chapter six BOM List

MATERIAL

CODE

BATTERY PROTECT BOARD 5448893

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

0790090

0882570 IC S-8261AANMG22 SO23-6

1633305 PCB E29-0

MATERIAL NAME SPECIFICATIONS LOCATION

SMD FIELD EFFECT

TRANSISTOR

SMD FIELD EFFECT

TRANSISTOR

ECH8601 TSSOP

ECH8601R TSSOP

U2 ①

U2　　　 ①

V3N video(RU)B SILVER

FPC BOARD 5449972

1633812 FPC 9 3-1

0700186 SMD RADIATION DIODE 1SB0602V22D0CA01

0700187 SMD RADIATION DIODE LTST-S270KRKT RED

D1,D3　　　　　②

D1,D3　　　　　 ②

0090346 SMD RESISTOR 1/16W 220O±5% 0402 R1,R3

V3N video(RU)B SILVER

MAINBOARD 2V3-1 1.0/Ver3.00 4940141

0090001 SMD RESISTOR 1/16W 0O±5% 0603 L11

0090324 SMD RESISTOR 1/16W 0O±5% 0402 R29,R32,R38,R39,R49,R52,R55,R56,R71,R76

0090326 SMD RESISTOR 1/16W 10O±5% 0402 R66,R83,R84

0090830 PRECISION SMD RESISTOR 1/1612O±1% 0402 R30

0090046 SMD RESISTOR 1/10W 470O±5% 0805 R5

0090447 SMD RESISTOR 1/16W 22O±5% 0402 R73,R69

0090330 SMD RESISTOR 1/16W 33O±5% 0402 R24,R26

0090339 SMD RESISTOR 1/16W 100O±5% 0402 R1,R2,R4,R9,R14

0090362 SMD RESISTOR 1/16W 1K±5% 0402 R10,R31,R59,R99,R100,R101

0090369 SMD RESISTOR 1/16W 2.2K±5% 0402 R27

0090839 PRECISION SMD RESISTOR 1/16W3K±1% 0402 R53

0090377 SMD RESISTOR 1/16W 4.7K±5% 0402 R23,R50,R51,R79,R91

0090385 SMD RESISTOR 1/16W 10K±5% 0402

0090387 SMD RESISTOR 1/1612K±5% 0402 R3

4,R60,R65,R68,R74,R75,R77,R81,R89,R90,R1

- 68 -

MATERIAL

CODE

MATERIAL NAME SPECIFICATIONS LOCATION

0090390 SMD RESISTOR 1/16W 18K±5% 0402 R67

0090396 SMD RESISTOR 1/16W 33K±5% 0402 R72

0090400 SMD RESISTOR 1/16W 47K±5% 0402 R6,R35,R36,R40,R46,R48,R57,R58,R82,R95

0090404 SMD RESISTOR 1/16W 68K±5% 0402 R98

0090408 SMD RESISTOR 1/16W 100K±5% 0402 R18,R64,R70,R85,R94,R78

0090421 SMD RESISTOR 1/16W 330K±5% 0402 R86,R87,R92

0090433 SMD RESISTOR 1/16W 1MO±5% 0402 R11,R12,R15,R22,R88,R97

0090509 PRECISION SMD RESISTOR 1/16W 100K±1% 0402 R16,R17,R43

0090417 SMD RESISTOR 1/16W 220K±5% 0402 R21

0090687 PRECISION SMD RESISTOR 1/16W 240K±1% 0402 R42

0090831 PRECISION SMD RESISTOR 1/16390K±1% 0402 R44

0090444 SMD RESISTOR 1/16W 10MO±5% 0402 R93

0090438 SMD RESISTOR 1/162.7MO±5% 0402 R96

1030029

1030033

SMD PRESS SENSITIVITY

RESISTOR

SMD PRESS SENSITIVITY

RESISTOR

SFI0402-050E100NP

S1005H180C100GPT 0402

C6,C85,C86,C88　　　　　　　　③

0310503 SMD CAPACITOR 50V 6P±0.25P NPO 0402 C27,C29

0310416 SMD CAPACITOR 50V 22P±5% NPO 0402 C73

0310418 SMD CAPACITOR 50V 27P±5% NPO 0402 C57

0310424 SMD CAPACITOR 50V 47P±5% NPO 0402 C44,C59

0310432 SMD CAPACITOR 50V 101±5% NPO 0402 C56,C98

0310435 SMD CAPACITOR 50V 221±5% NPO 0402 C37

0310704 SMD CAPACITOR 25V 102±10% 7R 0402 C5,C71,C75,C93

0310706 SMD CAPACITOR 25V 472±10% 7R 0402 C58

0310453 SMD CAPACITOR 25V 103±10% 7R 0402 C94,C66

0310834 SMD CAPACITOR 16V 106±20% 5R 1206 C36

0310455 SMD CAPACITOR 16V 223±10% 7R 0402 C72,C74

0310710 SMD CAPACITOR 16V 333±10% 5R 0402 C64,C67

0310711 SMD CAPACITOR 10V 393±10% 5R 0402 C65

0310712 SMD CAPACITOR 10V 473±10% 5R 0402 C61,C62,C63

C3,C4,C10,C17,C18,C19,C21,C22,C23,C24,C2

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

5,C26,C28,C33,C34,C38,C39,C40,C41,C42,C4 3,C46,C47,C68,C70,C76,C78,C80,C82,C84,C9 0,C92,C97

0310415 SMD CAPACITOR 50V 20P±5% NPO 0402 C12,C13

- 69 -

MATERIAL

CODE

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

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

MATERIAL NAME SPECIFICATIONS LOCATION

C1,C2,C7,C14,C30,C50,C51,C52,C53,C54,C99

④

C1,C2,C7,C14,C30,C50,C51,C52,C53,C54,C99

④

0310753 SMD CAPACITOR 16V 104±20% 5R 0402 C49

0310717 SMD CAPACITOR 6.3V 475±20% 5R 0603 C60,C87,C96

0310827 SMD CAPACITOR

0310831 SMD CAPACITOR

6.3V106±20% 5R 0805 T≤0.85

6.3V106±10%5R 0805 T≤0.85

C15,C16,C20,C35,C45,C48,C69,C79,C81,C83, C89,C91,C95　　　⑤

C15,C16,C20,C35,C45,C48,C69,C79,C81,C83, C89,C91,C95　　　 ⑤

0310736 SMD TANTALUMCAPACITOR 4V 220uF±20% 3528(B) C31,C32

0390354 SMD MAGNETIC BEADS 68O/100MHz±25% 1608 L6

0390388 SMD MAGNETIC BEADS 600O/100MHZ±25% 1005 L2,L4,L7,L8,L20,L22,L23,L24

0390142 SMD MAGNETIC BEADS FC1608-60102 L1,L3,L5,L9,L12

0390221 SMD COIL THREAD INDUCTOR 33nH±2% 1608 L18,L17

0390398 SMD COIL THREAD INDUCTOR 120nH±2% 1608 L16

0390386 SMD CORES INDUCTOR 10uH±20% CDRH3D16/HP L10,L13

0390044 SMD INDUCTOR 10UH±10% 2012 L19

0960278 SMD CRYSTAL OSCILLATOR 24MHz±30ppm 5032/4 20P Y1

0960279 SMD CRYSTAL OSCILLATOR 32.768KHz±20ppm SS6 12.5P XT1,XT2

0680077 SMD SCHOTTKY DIODE MBR0520 SOD123 D3

0680074 SMD SCHOTTKY DIODE B43WS SO323 D5

0700115

SMD TRANSFIGURATION

DIODE

BB202 D10,D11

0700154 SMD TRIODE 14148WS SO323 D8,D9,D12,D15

0780300 SMD TRIODE SS8550LT SO323 Q2,Q6,Q15

0780299 SMD TRIODE SS8050LT SO323 Q3,Q5,Q7

0780298 SMD TRIODE MMS3904 SO323 Q8,Q9,Q10

0780293 SMD TRIODE MMS3906 SO323 Q4

0790041

SMD FIELD EFFECT

TRANSISTOR

SI2305DS SO23 Q1

0883456 IC K9LAG08U0M-PCBO TSOP U4,U5

0883217 IC RT9284B-20PJ6E SOT23-6 U3

0883083 IC CY8C21534 SSOP U15

0882668 IC 79333DBVR SO23-5 U16

0883370 IC MCP73832 DFN U8

0883384 IC XC6206P152MR SOT-23 U14

- 70 -

MATERIAL

CODE

MATERIAL NAME SPECIFICATIONS LOCATION

0882850 IC 4162 QFN U10

0883330 IC WM8750BL QFN

0883403 IC WM8750L QFN

0883193 IC R2608 LQFP

0883442 IC RK2608A LQFP

U11 ⑥

U11　 ⑥

U2　 ⑦

08825598 IC HY57V641620ETP-7 TSOP$ U1

0882388 IC TE5767HN HVQFN U9

0882476 IC TP62200 SO23-5 U6

1090080 ESD ELEMENT RCL0504 SC70-6L

1090084 ESD ELEMENT PLR0504P SC70-6L

1310096 SMD STIR SWITCH SSSS70101

1310095 SMD STIR SWITCH 1370R

D1 ⑧

D1　 ⑧

SW1　 ⑨

1340099 SMD LIGHT TOUCH SWITCH SKRELGE010 SW2

1000053 COMMON MODE FILTER SDCW2012-2-371T NT2012 T1

1980050 EARPHONE SOCKET 2S382-001 CN1

1140082 MICROPHONE 44dB±3dB 4×1.2 WITH NEEDLE

MIC1 ⑩

1140105 MICROPHONE

42dB±2dB 4×1.5　WITH NEEDLE MIC1 　 ⑩

1860140 USB SOCKET 3DG08S-30G-P J1

1940405 CABLE SOCKET

8P 0.5mm SMD,NEXT MEET WITH

CLASP

J2

1633811 PCB 2 3-1

- 71 -

Chapter Four V5

Assembly and Disassembly Process

In order to get to know the structure of V5more easily and directly, now we use pictures to present

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

blindly and to damage 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 be

removed static before using!

4.1 Disassembly process of the player

1. Use cuspidal forceps to take out the LOCK button;

3. Take out the two screws of button board.

2. Use blade to remove the glass from the gap on one side of the glass.

4. Push out one corner of bottom casing from the hole of hanging rope and then separate the bottom casing from button position.

- 72 -

5. Separate the bottom casing and the middle casing.

6. Remove the clasp of button flat cable and then pull out button flat cable.

7. Take out 2 screws of main board.

9. Use forceps to pull out display screen flat cable and then take out main board.

8. Take out the main board from middle casing.

10. Use electric screwdriver or “+”-shaped screwdriver to take out 6 screws of cover board, take out display screen cover board and then the display screen components.

4.2 Assembly process of the player

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

reverse.

- 73 -

Chapter Eight V5

PCB board & Circuit diagram

Section One PCB board

8.1.1 Surface layer of Main Board

- 74 -

8.1.2 Bottom layer of Main Board

- 75 -

CN3

2SJ-0890-A02 HPOUT

FM_ANT3

J1

+5V

DNC D+

GND IN_L IN_R GND

3DU05S-32T-10

2 5 6 3 7 4 1

1 2 3 4 5 6 7 8

D_GND

L2

L1

L4

FCM1608-601 T02

RCLAMP0504F/SC-70 6L

C19

L5

68Ω/100MHz±25% 1608

FCM1608-601 T02

R11

SS8550LT SOD-323

470R

Q1

SPK_OUTL SPK_OUTR

OUT_L

OUT_R

P9

P6

P7P3

MCLK#

ADCLRC DACLRC DACDAT ADCDAT

1/16W 4.7K±5% 0402

P8

P4

P2

4V 220uF±20% 3528(B)

C3

4V 220uF±20% 3528(B)

C1

R121

4

5

R1

R2

R120

1K

C126

162

3

D1

1/16W 1K±5% 0402

16V 104 ±20% X5R 0402

C127

16V 104 ±20% X5R 0402

HP_OUTL

HP_OUTR

D_GND

3.3V

L22

FCM1608-601 T02

L23

FCM1608-601 T02

C4

16V 104 ±20% X5R 0402

D_GND

C125

16V 104 ±20% X5R 0402

C124

6.3V106±20% X5R 0805

C2

6.3V106±20% X5R 0805

2

2 2 2 2

R3

D_GND

1/16W 100Ω±5% 0402

1/16W 4.7K±5% 0402

R4 R5

R10

1/16W 100Ω±5% 0402

6.3V 105±20% X5R 0402

C9

C10

6.3V 105±20% X5R 0402

R9

1/16W 4.7K±5% 0402

C18

16V 104 ±20% X5R 0402

D_GND

R8

1/16W 12K±5% 0402

R12 10K

USB_VBUS 2

SDCW2012-2-900T

C13

16V 104 ±20% X5R 0402

USB_DET

R125

R126

USB_DET 2

NC

13

I2C_SDA

2

I2C_SCL

2

1/16W 100Ω±5% 0402

5767L3

5767R3

USB_DM

USB_DP

D_GND

USB_DM 2

USB_DP 2

R14 1M

3.3V

24

T1

R13

NC

1M

R6

R7

1/16W 100Ω±5% 0402

P12

P11

U1

DBVDD DCVDD

AVDD HPVDD

MCLK BCLK ADCLRC DACLRC DACDAT ADCDAT

MODE

CSB SDIN SCLK

LINPUT1

RINPUT1

P13

WM8750

MONOOUT

P10 P15P5P1

3 2

18 17

1 5 9 7 6 8

29

30 31 32

28

27

P14

LINPUT2 RINPUT2 LINPUT3 RINPUT3

DGND

HPGND

AGND

LOUT2

ROUT2

OUT3

LOUT1

ROUT1

MICBIAS

VREF

VMID

P16

26 25 24 23

4 14 19

16

15

10

11

13

12

22

20

21

HP_OUTL

C16

16V 104 ±20% X5R 0402

HP_OUTR

MIC

SPK_OUTL

SPK_OUTR

C17

6.3V106±20% X5R 0805

R116

D_GND

C14

16V 104 ±20% X5R 0402

1/16W 4.7K±5% 0402

R117

C15

6.3V106±20% X5R 0805

6.3V 105±20% X5R 0402

1/16W 4.7K±5% 0402

C7

C6

6.3V 105±20% X5R 0402

MICBIAS

C12

C11

76 -

-

6.3V106±20% X5R 0805

16V 104 ±20% X5R 0402

C5

KEY_LED2

R15

R122

KEY_LED1

200300

Q2

MMST3906 SOD-323

3.3V

R95

LED_CON

2

1/16W 1K±5% 0402

R19

10K

Section Two Circuit diagram

2

KEY_INT

KEY_SCL2

KEY_SDA2

3.3V

R18

47K

KEY_LED1 KEY_LED2

1/16W 4.7K±5% 0402

R118

psoc_power5

R119

R16 R17

1/16W 4.7K±5% 0402

D_GND

R135

4.7K

R133

47K

SS8550LT SOD-323

1 2 3

1/16W 100Ω±5% 0402

4 5

1/16W 100Ω±5% 0402

6 7 8

J2

Q13

R134

MICBIAS

R94 47K

R93

2.2K

C123

50V 221±5% NPO 0402

C122

MIC

6.3V 105±20% X5R 0402

NC

MIC1

1 2

MICROPHONE

XOUT

C20

50V 20P±5% NP O 0402

D_GND D_GND

C36

D_GND

16V 104 ±20% X5R 0402

R30 220K

R31 1M

R20 1M

24MHz

1.8V

16V 104 ±20% X5R 0402

C39

16V 104 ±20% X5R 0402

C31

SS8050LT SOD-323

Y1

50V 20P±5% NP O 0402

3.3V

+

C33

6.3V106±20% X5R 0805

D_GND

3.3V

R29

10K

Q3

D_GND

XIN

C21

R96

1/16W 1K±5% 0402

C35

3.3V

4

LCDRDN

LCDWRN

C25

+

6.3V106±20% X5R 0805

C27

16V 104 ±20% X5R 0402

D_GND

1928A104

1928A34 1928A44 1928A5 1928A64 1928A7 1928A8 1928A9

USB_DM1 USB_DP1

R27 10K

D04 D14 D24 D34 D44 D54 D64 D74

A0

FALE/RS/A1 FCLE/A2

FWEN

A3 A4 A5 A6 A7 A8 A9

A10 A11

D_GND

C34

16V 104 ±20% X5R 0402

1928A04

1928A14 1928A24

4

4 4 4

FREN

FWP

DM

DP

D0 D1 D2 D3 D4 D5 D6 D7 RD/BY

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 32

U3

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

A1233BA0

34

BA0

RESETN

A12

4

D15

FCE0

D15

123

127

126

128

124

125

FCE0

VDDA

LCDCSN

P3.7/D15

LCDRDN

LCDWRN

P2.9/CASN39P2.10/RASN40P2.11/CSN41GND42P2.13/PWM043P2.0/SDDO44P2.1/SDDI45P2.2/SDCLK46P2.3FCE1/SDCS47VCC48VSSD49VDD

BA135CKE36CLK37P2.8/WEN

38

CKE

BA1

CSN

CLK

WEN

RASN

CASN

D_GND

1928A1241928A1141928A13

4

16V 104 ±20% X5R 0402

BACK_EN

4

GND

4

D14

D13

D12

121

122

P3.5/D13

P3.6/D14

128-Pin TQFP

HOLD

KEY_INT

LED_CON

5

1

D_GND

D10

D11

118

119

120

P3.2/D10

P3.3/D11

P3.4/D12

RK2608

FCE1

C42

D94D104D114D124D13

D9

117

P3.1/D9

5

D8

116

P3.0/D8

P0.051P0.1

50

KEY_SDA

1

1.8V3.3V

C43

V_ADJ

RESETN

114

113

115

TEST

P1.0/NORCSN

P0.253P0.455P0.556P0.657P0.758P1.1/I2C_SDA

54

52

KEY_SCL

USB_DET

1

4

D_GND

16V 104 ±20% X5R 0402

1.8V

BATT

C23

C22

R21 100K±1%

D_GND

16V 104 ±20% X5R 0402

4

D8

110

112

111

VCC

VSSD

RESETN

P0.3

PWR_ON/OFF

PLAY_ON/OFF

4

1928M/R#

1928PLL_DIS

1928RESET#

PLAY/PAUSE

4

VDD

OFF

C24

XOUT

109

XOUT

XIN

6.3V 105±20% X5R 0402

108

107

XIN

VSSPLL

P1.2/I2C_SCL60P1.3/I2SMCLK61P1.4/DAC_LRCLK62P1.5/ADC_LRCLK63P1.6/SDI

59

MCLK

I2C_SDA

I2C_SCL

I2C_SDA

1,3

16V 104 ±20% X5R 0402

D_GND

106

5

BAT_DET

104

105

VDDPLL

LRADC0

DACLRC1ADCLRC

VCC1V8

LRADC1

R22 100K±1%

5

R23 100K

CHG_OK

DFU

103

102

101

97

99

98

100

VSSD

VCCA

VCC33

LRADC2

LRADC3

REXT100K

VCC33

VSSD

A15

A14 DQM1 DQM0

A20

A19

A18

A17

A16

IBOOT

VSSD

VCC VDD

HP_SENSE

AOR

VDDAO

AOMS

AOM

VSSAO

AOL

VDDA

VSSA

VCOM

IREF

MIC

AIR2

AIL2

AIR1

AIL1

P1.7/SDO

64

ADCDAT

1

VBAT42

96 95 94 93 92 91 90

89 88 87

86 85

84 83 82 81 80 79 78 77 76 75 74

73 72 71 70 69 68 67 66 65

D_GND

3.3V

+

C26

6.3V106±20% X5R 0805

D_GND

1928A15 4 1928A14 4

DQM1 DQM0

1928A17 4

1928A16 4

C38

16V 104 ±20% X5R 0402

D_GND

DACDAT 1

3.3V

D_GND

16V 104 ±20% X5R 0402

3.3V

U2

HY57V641620ETP

1

VDD

D0

2

DQ0

3

VDDQ

D1

4

NC

D2

5

DQ1

6

VSSQ

D3

7

NC

D4

D_GND

C37

1.8V

C32

16V 104 ±20% X5R 0402

D_GND

D5 D6

D7

DQM0 WEN CASN RASN CSN BA0 BA1 A10

FALE/RS/A1

FCLE/A2

A3

8

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

DQ2 VDDQ NC DQ3 VSSQ NC VDD DQM0 WEN CASN RASN CS BA0 BA1 A10AP A0 A1 A2 A3 VDD

SDRAM

DQ7

VSSQ

DQ6

VDDQ

DQ5

VSSQ

DQ4

VDDQ

DQM1

CKE

54

VSS

D15

53 52

D14

51

NC

D13

50 49

D12

48

NC

D11

47 46

D10

45

NC

D9

44 43

D8

42

NC

41

VSS

40

NC

DQM1

39

CLK#

38

CLK

CKE

37

A12

36

A12

A11

35

A11

A9

34

A9

A8

33

A8

A7A0

32

A7

A6

31

A6

A5

30

A5

A4

29

A4

28

VSS

D_GND

3.3V

DFU

S1

3.3V

10K

1/16W 100Ω±5% 0402

D_GND

77 -

R97

DFU

R36

-

I2C_SCL

I2C_SDA

MCLK

CLK

1/16W 4.7K± 5% 0402

R2633R

R28 3 3R

R24

MCLK#

C29

D_GND

50V 6P±0.25 P NPO 0402

R25

1/16W 4.7K±5% 0402

C30

50V 6P±0.25 P NPO 0402

MCLK#

CLK#

C41

D_GND

16V 104 ±20% X5R 0402

OSCI OSCO GND GND

M41T62

16

NC6NC7NC

BATT

R38

0R

14

NC13NC15NC

VCC

SQW

8

4

R98

1/16W 100Ω?% 0402

11

IRQ

10

R99

SCL

9

SDA

1/16W 100Ω?% 0402

R42 10R

D_GND

I2C_SCL

I2C_SDA

J3

+

1

2

-

3.3V

NAND Flash

R33

R32

47K

RD/BY

FWP

FREN

R37 47K

I2C_SDA

FCE1

FCE0

R137 0 R138 0

FCLE/A2 FALE/RS/A1 FWEN

3.3V

U4

R34 10K

1 2 3 4 5 6 7 8

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

RES# NC NC NC NC R/B2 R/B1 RE CE1 CE2 NC VCC VSS NC NC CLE ALE WE WP NC NC NC NC NC

NAND FLASH

48

NC

47

NC

46

NC

45

NC

D7

44

I/O7

D6

43

I/O6

D5

42

I/O5

D4

41

I/O4

40

NC

39

NC

38

PRE

37

VCC

36

VSS

35

NC

D_GND

34

NC

33

NC

D3

32

I/O3

D2

31

I/O2

D1

30

I/O1

D0

29

I/O0

28

NC

27

NC

26

NC

25

NC

I2C_SDA

I2C_SCL

3.3V

R35

C40

D_GND

16V 104 ±20% X5R 0402

R39 0R

RD/BY

R40 0R

NC

FREN

3.3V 3.3V

C46

D_GND

16V 104 ±20% X5R 0402

FCLE/A2

FALE/RS/A1

FWEN FWP

1 2 3 4 5 6 7 8

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

U5

RES# NC NC NC NC R/B2 R/B1 RE CE1 CE2 NC VCC VSS NC NC CLE ALE WE WP NC NC NC NC NC

NAND FLASH

NAND Flash

48

NC

47

NC

46

NC

45

NC

44

I/O7

43

I/O6

42

I/O5

41

I/O4

40

NC

39

NC

38

PRE

37

VCC

36

VSS

35

NC

34

NC

33

NC

32

I/O3

31

I/O2

30

I/O1

29

I/O0

28

NC

27

NC

26

NC

25

NC

D_GND

D7 D6 D5 D4

R41

NC

C45

D3 D2

D_GND

D1 D0

16V 104 ±20% X5R 0402

32.768KHZ

C44 6PF*

OSCI

XT1

OSCO

D_GND

U6

1 2 3 5

FM_3V3

R46 22R

C59

16V 104 ±20% X5R 0402

FM_3V3

SGND

FM_ANT1

FM_ANT

C47

50V 101±5% NPO 0402

C48

L6

120nH±2% 1608

C50

50V 47P±5% NPO 0402

50V 27P±5% NPO 0402

C49

25V 472?0% X7R 0402

R43 10R

C51

6.3V 475±20% X5R 0603

SGND

10V 473±10% X5R 0402

R44 18K

C52

SGND

L7

33nH±2% 1608

L8

33nH±2% 1608

25V 103?0% X7R 0402

C57

D2

BB202

D3

BB202

FM_3V3

R50 22R

16V 104 ±20% X5R 0402

SGND

C67

SGND

R47 100K

R45 10K

C56

10V 393?0% X5R 0402

L11

1

N.C

2

CPOP

3

VCOT1

4

VCOT2

5

VCOVCC

6

DGND

7

DVCC

8

DATA

9

CLOCK

10

N.C

600Ω/100MHZ±25% 1005

L10

600Ω/100MHZ±25% 1005

38

36

40

N.C

39

LOOPSW

33

35

37

34

RFI1

RFI2

AVCC

TCAGC

RFGND

TEA5767HN

O603CS

W/R11BUSM12BUSEN13SWP114SWP215XTAL116XTAL217PDLF18PHLF19N.C

MURATA COILCRAFT OR TOKO SMD LLQ1608-A33NG

SGND

FM_3V3

MURATA COILCRAFT OR TOKO SMD LLQ1608-A33NG

I2C_SCL 2

I2C_SDA 2

31

32

N.C

LLQ1608-AR10G

IFGAI

AGND

N.C DIFL2 DIFL1

TCIFC

VREF

MPXO

TMUTE

RAVO

LAVO

N.C

20

O603CS

U7

MURATA COILCRAFT TOKO SMD

30 29 28 27 26 25 24 23 22 21

SGND

32.768KHz

C53 10V 473±10% X5R 0402

C55

C62

XT2

25V 102±10% X7R 0402

SGND SGND

C54

16V 333?0% X5R 0402

SGND

10V 473±10% X5R 0402

SGND

16V 333±10% X5R 0402

C58

SGND

L3 L16

C64

600Ω/100MHZ±25% 1005 600Ω/100MHZ±25% 1005

R49 33K

C65

SGND

50V 22P±5% NPO 0402

16V 223±10% X7R 0402

C63

SGND

R48

0R

D_GND

5767R 1 5767L 1

3.3V

L9

6.3V106?0% X 5R 0805

NECTAR-IO603CS

C66

25V 102?0% X7R 0402

SGND

FCM1608-601 T02

C60

SGND

FM_3V3

C61

16V 104 ±20% X5R 0402

78 -

-

SGND

16V 223?0% X7R 0402

B

1928IOVDD

3.3V

C70

C68

16V 104 ±20% X5R 0402

C71

C69

D_GND

16V 104 ±20% X5R 0402

CLKI

C72

16V 104 ±20% X5R 0402

1928M/R#2

LCDWRN

2

D_GND

R123

3

D_GND

R124

1M

2

680

CLKO

1

U15

4MHz

陶振

1928PVDD 1928COREVDD

M/R#

LCDRDN2

D152 D142 D132 D122 D112

1928IOVDD

D102

D92 D8

2

D72

2

D6

2

D5

2

D4 D32

1928PLL_DIS2

16V 104 ±20% X5R 0402

D_GND

RE/WR#1928IOVDD

1928COREVDD

D22 D12 D02

L12

C73

D_GND

1928COREVDD

D_GND

16V 271 ±10% X7R 0402

600Ω/100MHZ?5% 1005

C74

16V 104 ±20% X5R 0402

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 32

C100

D_GND

1.8V

C75

C76

D_GND

16V 104 ±20% X5R 0402

U8

DV_Y2 DV_Y1 DV_Y0 MR# COREVDD COREVSS WE1# WE0# RD/WR# RD# CS# DB15 DB14 DB13 DB12 DB11 IOVSS IOVDD DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 COREVDD COREVSS DB2 DB1 DB0 PLL_DIS

R56 10K

C101

16V 682 ±10% X7R 0402

C77

C78

C79

C80

16V 104 ±20% X5R 0402

D_GND

IOVDD

113

1928COREVDD

112

IOVSS

LCD_D3

111

110

COREVSS

COREVDD

LCD_DATA3

LCD_D4

LCD_D6

LCD_D5

107

108

109

LCD_DATA6

LCD_DATA5

LCD_DATA4

LCD_DCLK

LCD_D7

1928IOVDD

106

105

LCD_SHIFT

LCD_DATA7

104

IOVDD

103

IOVSS

1928COREVDD

102

101

COREVSS

COREVDD

99

100

LCD_CS#

LCD_D/C#

128

DV_Y3

126

127

DV_FIELD

DV_HVALID

125

124

DV_Y4

DV_WALID

123

122

DV_Y5

DV_Y6

LCD_HS

121

DV_Y7

LCD_VS

119

118

120

LCD_LINE

LCD_FRAME

LCD_D1

LCD_D0

116

117

LCD_DEN

LCD_DATA0

LCD_D2

1928IOVDD

115

114

LCD_DATA2

LCD_DATA1

SSD1928#

PLL_VCTRL33PVDD34PVSS35CLKI36CLKO37COREVSS38CLKI239DV_CLKI40DV_CLKO41RESET#42TESTO43AB044AB145AB246AB347IOVDD48IOVSS49AB450AB551AB652AB753AB854COREVSS55COREVDD56AB957AB1058AB1159AB1260AB1361AB1462AB1563AB16

D_GND

1928PVDD

R52

CLKI

CLKO

10K

D_GND

1928IOVDD

D_GND

1928A2

1928A1

1928A0

2

1928RESET#2

1928A3

1928A4

2

1928A5 2

1928A92

1928A13

1928A12

1928A112

2

1928A62

1928A72

1928COREVDD

98

97

LCD_RD#;LCD_E

GPIO4 GPIO3 GPIO2

LCD_WR#;LCD_RD WR#

GPIO1 GPIO0 IOVSS IOVDD

COREVDD

COREVSS

DV_ENB

DV_RESET

I2C_SCL I2C_SDA

CNF6 CNF4 CNF3 CNF2 CNF1 CNF0

AD_MODE

SD_WP

SD_CLK

SD_CMD

COREVDD

COREVSS

SD_CD SD_DATA3 SD_DATA2 SD_DATA1 SD_DATA0

AB18 AB17

64

1928A1521928A102

1928A14 2

J4

3.3V

C92

C93

C94

16V 104 ±20% X5R 0402

4.2V

L17

FCM1608-601 T02

2

C105

6.3V106±20% X5R 0805

BACK_EN

6.3V106±20% X5R 0805

D_GND

3.3V

R131

TFT_RST

96 95

TFT_SCL

94

TFT_SDA

93

TFT_SEN

92 91

D_GND

90 89 88

D_GND

87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65

D_GND

1928IOVDD

D_GND

1928COREVDD

D_GND

1928A17 1928A16 2

1928IOVDD

1928COREVDD

2

NC

R132 10K

D_GND

A027DL01/A030DL01

320*240(RGB)

CP3

CP64CP75CP86NC7PCDL8PCDH9VCOML10VCOMH11AGND12PVDD13AVDD14CP115CP216PWM17FB18LED-19LED+20NC21GND22VCC23VSYH24HSYH25DCLK

CP42CP5

1

3

D_GND

6.3V 475±10% X5R 0603

16V 105 ±10% X5R 0603

6.3V 475±10% X5R 0603

16V 105 ±10% X5R 0603

C82

C86

C84

C83

C87

C90

C91

6.3V 475±10% X5R 0603

D_GND

L18

10uH ±20% CDRH3D16/HP

6

4

EN

OVP

2

GND

U10

RT9284

TFT_AVDD

TFT_PVDD

3.3V

6.3V 475±10% X5R 0603

LX1VCC

5

3

FB

16V 105 ±10% X5R 0603

C88

D_GND

R58

1/16W 100Ω±5% 0402

R60

10K

C85

TFTLED-

16V 105 ±10% X5R 0603

D6

MBR0520/SOD123

TFTLED+

R59 22R±1%

D_GND

LCD_VS

VCC_LCD

D027D128D229D330D431D532D633D7

26

LCD_D0

LCD_D1

LCD_D2

LCD_DCLK

LCD_HS

16V 105 ±10% X5R 0603

3.3V

L15

C104

25V 102±10% X7R 0402

R62

22R±1%

34

LCD_D4

LCD_D5

LCD_D7

LCD_D6

LCD_D3

TFT_PVDD

C81

D_GND

600Ω/100MHZ?5% 1005

C95

D_GND

FCM1608-601 T02

C106

25V 475 +80%-20% Y5V 1206

D_GND

SDA35SCL

SCEN37SHDB38GRESTB

36

39

TFT_SEN TFT_SCL TFT_SDA

TFT_AVDD

C89 16V 105 ±10% X5R 0603

D_GND

VCC_LCD

16V 105 ±10% X5R 0603

LED+

L19

R51

TFT_RST

1/16W 4.7K±5% 0402

TFTLED+

TFTLED-

3.3V

79 -

-

4.2V

C108

6.3V106±20% X5R 0805

D_GND

1 2

TPS79333DBVR SOT23-5

R64 68K

D_GND

U11

VIN

VOUT GND EN3BYPASS

C111

25V 102±10% X7R 0402

3.3V

5

4

C110

25V 103±10% X7R 0402

D_GND

C109

6.3V106±20% X5R 0805

VCC

3.3V

USB_VBUS1

C118

6.3V106±20% X5R 0805

CHG_OK2

D_GND

R80 0R

3.3V

USB_VBUS

R81 10K

VIN

U13

1

VDD

2

VDD

5

START NC7VSS

MCP73832T

1/16W 100Ω±5% 0402

R72

1/16W 1K±5% 0402

D_GND

VBAT

PROG

VBAT

D_GND

4 8 3 6

D8 BAT43WS

R70

D_GND

G

6.3V 475±20% X5R 0603

R82

4.7K±1%

C113

6.3V106±20% X5R 0805

D_GND

Q6

SI2305DS SOT-23

D S

BAT

BATT

C119

D_GND

EN

VDD

C114

6.3V106±20% X5R 0805

R73 10K

R83 47K

R86

2.7M

D_GND

R74 10K

START

D11

1N4148WS

R87 10K

1.8V

D_GND

OFF 2

3.3V

R65

100k

PLAY/PAUSE2

PLAY

D7 1N4148WS

START

C116

nc

L21

600Ω/100MHZ±25% 1005

psoc_power1

D_GND

SW1

1

C117

nc

3.3V

R76 47K

HOLD2

D_GND

2

80 -

3

-

4

SK??

V

D_GND

U12

1

VI

2

GND EN3FB

TPS62200/FAN5307* SOT23-5

V_ADJ

2

5

SW

4

R69

L20

10uH ±20% CDRH3D16/HP

C112

R66

240K±1%

R67

390K±1%

10k

R71 47k

D_GND

Q5

MMST3904 SOD-323

R68

100K±1%

50V 47P±5% NPO 0402

C115

50V 101±5% NPO 0402

1.8V

D_GND

BATT

R84 1M

3.3V

R75 330K

D_GND

MMST3906 SOD-323

D10

1N4148WS

Q8

SS8050LT SOD-323

R85 100K

Q9

SS8050LT SOD-323

Q7

R78 330K

R79 10M

C121

6.3V 475±20% X5R 0603

D9

USB_VBUS1

CN2

1

BAT

2

C120 SFI0402-050E100NP

1N4148WS

EN

R77 330K

D_GND

3.3V

XC6206P182

2

VI

U14

GND

1

D_GND

VOUT

16V 104 ±20% X5R 0402

R92 100K

3

R136

200K

C8

VCC1V8 2

R90 1M

START

D_GND

BBK V3H, V5N, V5H Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual