Xmega A1 Media Player development board

Features of this development board:

1. Main controller ATxmega64A1/ATxmega128A1/ATxmega64A1u/ATxmega128A1u.
2. On-board External 512KB SRAM memory ( AS6C4008 ).
3. One or two onboard 24c EEPROM ICS up to 2Mb, or 23K serial RAM memory, or combined.
4. One or two onboard uSD memory card sockets, with led to indicate activity of each uSD memory card.
5. On-board usart to USB converter ( FT232RQ), with RX/TX activity led.
6. On-board dedicated battery charger controller via USB connector ( MCP73871 ).
7. On-board dedicated resistive touch screen controller ( AR1020 ).
8. On-board dedicated RTC/64Bytes SRAM/128Bytes EEPROM circuit with backup high capacity capacitor ( MCP79410 ).
9. On-board Ogg Vorbis/MP3/AAC/WMA/MIDI codec ( VS1053b ) with jack 3.5mm audio output ,3 pin connector audio input and connector for button style Microphone, with led activity monitor on xDCS, xCS and and DREQ pins.
10. 320x240 TFT high quality display 8Bit bus mode ( MI0283QT-2 ) connected to external SRAM bus to increase speed of transaction using DMA working with him like a external SRAM.
11. One 30 pin extension peripheral connector with bidirectional 8bit data bus, unidirectional 8Bit A0-A7 address bus,7 chip select signals, RW and RD signals and one IRQ line.
12. On-board bus extension decoder to allow up to seven external peripherals directly accessed via external RAM bus ( 74LV138 ) and up to 256*7 external peripherals with external addresses decoders.
13. One lateral push button user defined(like PWR/Back).
14. One lateral push button reset function.
15. PDI programing connector.
16. JTAG debugging connector.
17. 3V VLDO power regulator for all circuits, to power this board from LI-IO battery on entire range of voltage ( 3.2 to 4.2V and 5V from USB connector).
18. 1.8V VLDO power regulator to power digital section on VS1053b circuit.
19. On-board NOKIA or HUAVEI battery connector.
20. Three pin connector to connect an external battery.
21. 29 IO pins accessed via two lateral 26 pin connectors ( entire B and C port, pin port A2-A7 and D1-D7 ).
22. Resistive divider to monitor the battery voltage.

 Down I posted several photos of board generated by a 3D software:

 In future for this board will be developed extra peripherals like:

• ATA high capacity hard disk shield.
• Secondary displays shield.
• Ethernet interface shield.
• Nand flash memory shield.
• Video sensor shield.
• Magnetometer shield.
• Gyroscope shield.
• Dedicated ADC shield to make oscilloscope.
• Video out encoder shield.
• Wireless communication shield.
• GSM communication shield.
• IR communication shield.
• Bluetooth communication shield.
• GPS shield.
• Motor stepper shield.
• Xbee shield.

And others.

This board will be delivered with a demo MP3 player project source code and a framework with library's and drivers special developed for this board.

ATxmega boot loader

Currently I bought a Micromedia Board ( microMMB for XMEGA ) from mikroEelektronika.

This board is perfect for general developing because can be used by programmers that don't have a programmer, because is coming with a bootloader pre-installed.

I mentioned only the bootloader because this bootloader is the problem

To upload a flash with 64KB size is taken about 10-15 minutes, or to develop a firmware is a very very long time to wait, visualizing this I developed a very fast bootloader to write only Flash and EEProm memory, only strictly necessary memories because all of other ATxmega features can be set from uploaded firmware.

In this stage I compiled eight bootloader firmwares only for ATxmega128A1 for each used hardware usart, and each firmware work with a 256000 baud transfer rate, this baud rate is set like default baud rate for the up-loader when is opened, I want to mention that the up-loader can work with atmega bootloader firmwares found here.

Version 1.0 of firmwares:

For usart 0 ( usart C0 ).

For usart 1 ( usart C1 ).

For usart 2 ( usart D0 ).

For usart 3 ( usart D1 ).

For usart 4 ( usart E0 ).

For usart 5 ( usart E1 ).

For usart 6 ( usart F0 ). can be used for Micromedia Board for XMEGA.

For usart 7 ( usart F1 ).

Download PC uploader program.

Multipurpose development board with ATxmega64A1 / ATxmega128A1

Features:

1. Main processing unit ATxmega64A1 or ATxmega128A1.
2. Audio decoder VS1011,1033,1053 with stereo jack 3.5mm female connector & external speakers 3 pin connector(optional).
3. DS1307 real time clock with battery pads.
4. PDI & JTAG connectors.
5. LB1936 dual driver for asynchronous motors (optional).
6. AD7414 temperature sensor for motor driver (optional).
7. External motors driver connector with I2C bus.
8. Two micro SD connectors ( one is optional ).
9. Four connectors with 2x3 pin to control eight servo motors, two servomotors for each connector, each connector is power interruption to minimize power consumption.
10. Two power jack connector 5.5/2.1mm put in series to connect two photovoltaic panels and with static commutator controlled by software to charge main accumulator.
11. High power step down stabilizer from accumulator voltage to 3.3V.
12. On-board 512KB static ram for minimizing power consumption in sleep mode.
13. BTM-222 Bluetooth for communication with PC or mobile phones (optional).
14. RFM12BP at 434Mhz for communication with one remote control for huge distance up to 5Km (optional).
15. RFM12BS at 868Mhz to control other wireless modules (optional).
16. All modules from point 13, 14 & 15 can work at the same time without interferences.
17. Five connectors with four pins with I2C bus and 3.3V power for future extensions.
18. External extension bus connector to connect future external modules to ATxmega parallel data bus, such as Displays, more motors controllers, image sensors etc.
19. Possibility to monitor power consumption from main accumulator.
20. Possibility to monitor generated power by the photovoltaic panels.
21. Possibility to monitor voltage of the main accumulator.
22. Possibility to monitor power consumption of each motor powered by on-board driver.

Applications:

1. Robots: contain on-board dual asynchronous motor driver and four connectors to control eight servomotors, powered from an Li-Ion accumulator and support to charge the accumulator from two photovoltaic cells or from an external source, several communication modules: Bluetooth Class1, EFM12BP for long distance communication up to 5Km and RFM12BS for low power and short distance communication up to 300m.
2. Audio player: contain on-board VS1011, VS1033 or VS1053, single or dual micro-SD memory card connectors with push.
3. Audio/Video(low quality) player.
4. General development application because has all possibility to connect with another controller or another peripherals to the expansion bus, the expansion connector work to speed of the external ram memory, because the expansion peripherals is mapped to address space 524288 to 1048576, maximum number of expansion peripherals is 65536.

Power supply input between 3.4V and 9.5V

Maximum supported input voltage on photovoltaic connectors and the main accumulator: 9.5V, Maximum absolute 10.5V.

Board dimension: 66.83 x 130.78mm.

Development board 1 for ATXMEGA A1 microcontrollers

This is a very simple board to test and develop firmwares for ATXMEGA A1 micro-controllers.

This board contains only strictly necessary components for the ATXMEGA A1 micro-controller and only one extra module is added, the USB to serial adapter, the rest of modules can be added to a mother board.

This board has 89x74mm.




This is a very simple board to test and develop firmwares for ATXMEGA A1 micro-controllers.

This board contains only strictly necessary components for the ATXMEGA A1 micro-controller and only one extra module is added, the USB to serial adapter, the rest of modules can be added to a mother board.

This board has 89x74mm.



You can download gerber files and schematic from here.

ATXmega.....A1 ,Mp3Player ,RadioFm ,Rds ,Hdd ,Sd ,Ethernet ,2UsbHost

Here i present you orcad capture schematic:




PDF Schematic