MikroElektronika

SmartMP3 ManualAll Mikroelektronikas development systems feature a large number of peripheral modules expanding microcontrollers range of application and making the process of program testing easier. In addition to these modules, it is also possible to use numerous additional modules linked to the development system through the I/O port connectors. Some of these additional modules can operate as stand-alone devices without being connected to the microcontroller.

Addi

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l Boa

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SmartMP3

MikroElektronika

SmartMP3SmartMP3 is an additional board used to reproduce audio files in mp3 format. In addition to the built-in speaker, SmartMP3 includes connectors that enable additional speakers or headphones to be connected to the board. There is also an MMC/SD card connector provided on the board. The SmartMP3 board uses the on-board audio decoder VS1011E to convert audio files in mp3 format into an audio signal to be reproduced through speakers.

Figure 1-1: SmartMP3 connected to the development system

SmartMP3 communicates with the microcontroller via SPI. The SmartMP3 additional board is connected to the development system via flat cables with 2x5 female connector. With regard to the fact that different development systems use different power supply voltages, it is necessary to adjust SmartMP3 voltage levels. It is performed through jumper J1 provided on the SmartMP3 board. In case that development system uses 3.3V power supply voltage, it is necessary to place jumper J1 in 3.3V position. Otherwise, jumper J1 should be left in its default position (5V).

When jumper J1 is placed in 5V position, the SmartMP3 board could be connected to development sysem with 5V power supply voltage such as: EasyPIC6, EasydsPIC6, EasyAVR6, EasyPSoC4, Easy8051 v6 etc.

When jumper J1 is placed in 3.3V position, the SmartMP3 board could be connected to development sysem with 3.3V power supply voltage such as: LV18F v6, EasyLV-18Fv6, LV24-22 v6, LV-32MX v6 etc.

Figure 1-2: J1 in 5V position Figure 1-3: J1 in 3.3V position

SmartMP3

MikroElektronika

In addition to jumper J1, the SmartMP3 board includes jumpers J2 and J3 used to turn on/off the built-in speaker as well as additional one connected to the board via the CN4 connector. The SmartMP3 board also enables you to connect another additional speaker via the CN5 connector. The built-in speaker is turned on by placing jumpers J2 and J3 in ENABLE position. When jumpers J2 and J3 are placed in DISABLE position, the built-in speker is turned off, thus enabling the additional speaker to be connected through the CN4 connector.

MMC/SD card connector

Figure 1-4: Built-in speaker is on

Figure 1-5: Built-in speaker is off

In addition to the above mentioned speakers, the SmartMP3 board enables you to connect headphones via CN2 and CN3 connectors.

A LED POWER is used to indicate the operation of the SmartMP3 board.

Jumpers J2 and J3 for turning on/off the built-in speaker Built-in speaker

Flat cable for connecting withdevelopment system

Jumper for selecting the power supply voltage of the development system

SmartMP3

MikroElektronika

R15

R14

100

100

R16100K

B0

A0

VCCB

OE

NC

VCCA

DIR

B1

A1

B2

A2

B3

A3

B5

A5

B6

B7

GND

A6

A7

GND

GND

B4

A4

U5

74LVCC3245

VCC-3.3

MISO

DREQ

MISO-3.3

DREQ-3.3

VCC

C26100nF

C25100nF

R18100K

R19100K

R20100K

R21100K

R31K

R21K

R11K

B0

A0

VCCB

OE

NC

VCCA

DIR

B1

A1

B2

A2

B3

A3

B5

A5

B6

B7

GND

A6

A7

GND

GND

B4

A4

U4

U1

74LVCC3245

VCC-3.3

MP3-CS#-3.3

MMC-CS#-3.3

MP3-RST#-3.3

SCK-3.3

BSYNC-3.3

DCLK-3.3

MP3-CS#

MMC-CS#

MOSI-3.3

MOSI

SDATA-3.3

SDATA

DCLK

BSYNC

SCK

MP3-RST#

VCC

C27100nF

C28100nF

VCCVCC-REG VINVOUT

REG1

MC33269DT-3.31

32

E6 E10

10uF 10uF

C16

100nF

FERRITE

FP1VCC-3.3 AVCC-3.3

E5

10uF

C19

100nF

R6

R5MISO-3.3

MOSI-3.3

SCK-3.3

MP3-CS#-3.3

BSYNC-3.3

SDATA-3.3

DCLK-3.3

DREQ-3.3

MP3-RST#-3.3

1M

10KR9100K

R8100K

E210uF

E310uF

C11

C23

C21

C24

C22LEFT

HE

AD

PO

HO

NE

S

RIGHT

100nF

100nF

100nF

100nF

100nF

FERRITE

FP2

VCC-3.3 VCC-MMC

E11

10uF

R231K

VCC-MMC

MMC-CD#

MMC-CD#

MMC-CS#-3.3

MISO-3.3

CN8MMC CARD

CS

Din

GND

+3.3V

SCK

GND

Dout CD

GC

OM

MOSI-3.3

SCK-3.3

VCC

C20

100nF

VCC-MMC

C2

100nF

VCC-3.3

C1

100nF

VCC-3.3

C3

100nF

VCC-3.3

C4

100nF

AVCC-3.3

C5

100nF

AVCC-3.3

DGNDXCSSCLKSISO

VS1011E

DVDDDGND

RESETAGNDLEFTAVDDRCAPAGNDRIGHTAVDDAGND

PIO1GPIO0GESTT

DVDD

DREQDCLKSDATABSYNCDVDDDGNDXTAL0XTAL1

VCC-3.3 VCC-3.3

AVCC-3.3

VCC-3.3

LEFT R4

R7

20K

75K

E1

100nF

100nF

C6

C7

10uF

C 01

100nF

VCC-3.3

VCC-3.3

U2

LM4846

SHUTDOWN

BYPASS

+IN

-IN

VO2

GND

VDD

VO1

SP OUT1+

SP OUT1+

SP OUT1-

SP OUT1-

RIGHT R10

R11

20K

75K

E4

100nF

100nF

C8

C9

10uF

C 21

100nF

VCC-3.3

VCC-3.3

U3

LM4846

SHUTDOWN

BYPASS

+IN

-IN

VO2

GND

VDD

VO1

OUT2+

OUT2-

X125MHz

C 71

22pF

C 81

22pF

CN2 J3

J2

SP1+

SP1-

OUT1+

OUT2+

OUT1-

OUT2-

CN4

SP1

CN5

CN3

MMC-CS#

DREQ

MP3-RST#

DCLK

MISOMMC-CD#

MP3-CS#

BSYNC

SCK

SDATA

MOSI

VCC

VCC

CN6

CN6 J1

VCC-BRDVCCVCC-REG

3.3V5V

VCCR7

1K

LD1POWER

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Figure 1-6: SmartMP3 additional board connection schematic

SmartMP3

MikroElektronika

SmartMP3

MikroElektronika

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