SmartMP3. Additional Board. Manual. MikroElektronika

Transcription

1 Manual All Mikroelektronika s development systems feature a large number of peripheral modules expanding microcontroller s 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. Additional Board

2 is an additional board used to reproduce audio files in mp3 format. In addition to the built-in speaker, 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 board uses the on-board audio decoder VS0E to convert audio files in mp3 format into an audio signal to be reproduced through speakers. Figure -: connected to the development system communicates with the microcontroller via SPI. The 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 voltage levels. It is performed through jumper J provided on the board. In case that development system uses 3.3V power supply voltage, it is necessary to place jumper J in 3.3V position. Otherwise, jumper J should be left in its default position (5V). Figure -2: J in 5V position When jumper J is placed in 5V position, the board could be connected to development sysem with 5V power supply voltage such as: EasyPIC6, EasydsPIC6, EasyAVR6, EasyPSoC4, Easy805 v6 etc. Figure -3: J in 3.3V position When jumper J is placed in 3.3V position, the board could be connected to development sysem with 3.3V power supply voltage such as: LV8F v6, EasyLV-8Fv6, LV24-22 v6, LV-32MX v6 etc.

3 In addition to jumper J, the 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 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. In addition to the above mentioned speakers, the board enables you to connect headphones via CN2 and CN3 connectors. A LED POWER is used to indicate the operation of the board. Figure -4: Built-in speaker is on Figure -5: Built-in speaker is off Flat cable for connecting with development system Jumpers J2 and J3 for turning on/off the built-in speaker Built-in speaker MMC/SD card connector Jumper for selecting the power supply voltage of the development system

4 R5 R R6 B0 A0 B OE NC A DIR B A B2 A2 B3 A3 B5 A5 B6 B7 A6 A7 B4 A4 U5 74L3245 MISO DREQ MISO-3.3 DREQ-3.3 C26 C25 R8 R9 R20 R2 R3 R2 R B0 A0 B OE NC A DIR B A B2 A2 B3 A3 B5 A5 B6 B7 A6 A7 B4 A4 U4 U 74L3245 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# C27 C28 -REG VIN VOUT REG MC33269DT E6 E0 0uF 0uF C6 FERRITE FP A E5 0uF C9 R6 R5 MISO-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 M 0K R9 R8 E2 0uF E3 0uF C C23 C2 C24 C22 LEFT HEADPOHONES RIGHT FERRITE FP2 -MMC E 0uF R23 -MMC MMC-CD# MMC-CD# MMC-CS#-3.3 MISO-3.3 CN8 MMC CARD CS Din +3.3V SCK Dout CD G COM MOSI-3.3 SCK-3.3 C20 -MMC C2 C C3 C4 A C5 A D XCS SCLK SI SO VS0E DVDD D RESET A LEFT AVDD RCAP A RIGHT AVDD A GPIO GPIO0 TEST DVDD DREQ DCLK SDATA BSYNC DVDD D XTAL0 XTAL A LEFT R4 R7 20K 75K E C6 C7 0uF C 0 U2 LM4846 SHUTDOWN BYPASS +IN -IN VO2 VDD VO SP OUT+ SP OUT+ SP OUT- SP OUT- RIGHT R0 R 20K 75K E4 C8 C9 0uF C 2 U3 LM4846 SHUTDOWN BYPASS +IN -IN VO2 VDD VO OUT2+ OUT2- X 25MHz C 7 22pF C 8 22pF CN2 J3 J2 SP+ SP- OUT+ OUT2+ OUT- OUT2- CN4 SP CN5 CN3 MMC-CS# DREQ MP3-RST# DCLK MISO MMC-CD# MP3-CS# BSYNC SCK SDATA MOSI CN6 CN6 J -BRD -REG 3.3V 5V R7 LD POWER { { Figure -6: additional board connection schematic

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