===Introduction===

Dacu is an ARM Cortex-A8 industrial tablet platform, built around a carrier board hosting the [[File:Category:LizardDacu-top-view.png|600px|frameless|Lizardborder]] CPU module

The following picture shows block diagram of Dacu:is a '''carrier board''' that can host various '''DAVE Embedded Systems''' SOMs, like, for example, the [[File:dacu-bd.jpgCategory:Lizard|thumbnail|centerLizard]]CPU module.{{ImportantMessage|text=Please note that DACU supports several BOM variants in order to mate with different SOMs or evaluation boards.}}

==={| class= "Full controlwikitable" mode ====# connect the serial cable, provided with the board, to J3 pin|-|Supported SOMs|[[:Category:AxelUltra|Axel Ultra]]<br>[[:Category:AxelLite|Axel Lite]]<br>[[:Category:Diva|Diva]]<br>[[:Category:Lizard|Lizard]]|-|Power|12-strip connector24 V# connect this cable to PC COM port through a NULL|-modem cable |Serial Ports|1x UART RS232 on DB9<br>1x UART (RS232/RS422/RS485) or CAN on DB9 (hardware mount options)<br>1x UART RS232 on pin strip (not provideddebug port)# start your favourite terminal software |-|Ethernet|1x Fast Ethernet on PC; communication parameters are:RJ45 connector|-|Display|7" 800x480 LVDS|-|Storage|1x microSD slot|-|USB|2x USB 2.0 ports|-|Audio|UDA1345 codec|-|Buses#* baud rate: 115200 Bps|I2C<br>SPI#* data bits: 8|-#* stop bits: 1|Other#* parity: none|On board touch controller<br>Optional Wi-Fi module<br>GPIOs# connect the system to Ethernet LAN (RJ45 connector, J6)|-# connect a 12Vcc power supply to to the power jack (JP2)|}

==== "Normal" mode ====# connect The following picture shows block diagram of the system to Ethernet LAN Dacu carrier board (RJ45 connector, J6)# connect a 12Vcc power supply to to the power jack (JP2version for the Lizard SOM) :

Once power has been applied[[File:dacu-bd.png|thumbnail|center|400px]] == Mechanicals == The following picture shows the mechanical layout of Dacu:[[File:Dacu-top.png|thumbnail|center|400px]] == Available options == === RS232/RS485/RS422 or CAN === === Male or female DB9 connector === == Connectors pinout == The following section describes the on-board connectors and their pinout. === Power supply === Power is provided through the JP2 DC Power Jack. Power voltage range is [12-24 V] === CPU module connectors – J1, J2 === J1 and J2 are the system will boot loading 140-pin mating connectors for the software components from hosted SOM. === UART1 - J4 === J4 is a standard DB9 connector for the internal flashRS232 four-wires UART1 port. Once The following table reports the boot process has completedconnector's pinout: {| class="wikitable" |-!Pin# !Pin name!Function!Notes|-|1, you4, 6, 9|N.A.|N.A.|Connected to protection diode array|-|2|UART_EXT_RX|Receive line||-|3|UART_EXT_TX|Transmit line||-|5|DGND|Ground||-|7|UART_EXT_RTS|Request To Send line||-|8|UART_EXT_CTS|Clear To Send line||-|} === UART2/CAN - J5 === J5 is a standard DB9 '''male''' connector for the configurable UART/CAN port. The board provides some 'll get ''hardware''' mount options for the selection of the UART mode (RS232/RS422/RS485 with auto-direction) or the CAN mode. The board default Android configuration provides the CAN interface on this port, while the RS232/RS422/RS485 interface is provided as an option to customers who choose the alternative configuration. Please note that this port can be used to connect a [http://www.rovingnetworks.com/products/RN240 Bluetooth serial adapter] powered by the 5V_BT signal.  The following table reports the connector's pinout: {| class="wikitable" |-!Pin# !Pin name!RS232 mode !RS422 mode !RS485 mode !CAN mode!Notes|-|1|N.A./Reserved|Not connected|Not connected|Not connected|Reserved||-|2|UART2_A/CAN_M|UART2 rx line|Not connected|Not connected|CAN bus low signal||-|3|UART2_Y/CAN_GND|UART2 tx line|Inverting driver output|Inverting driver output|CAN bus GND||-|4|N.A./Reserved|Not connected|Not connected|Not connected|Reserved||-|5|DGND/CAN_SHIELD|Ground|Ground|Ground |CAN bus shield (Optional)||-|6|N.A./GND|Not connected|Not connected|Not connected|Ground (Optional)||-|7|UART2_Z/CAN_P|UART2 Request To Send|Noninverting driver output|Noninverting driver output|CAN bus high signal||-|8|UART2_B/Reserved|UART2 Clear To Send|Not connected|Not connected|Reserved||-|9|5V_BT/CAN_V+|5V for bluetooth|5V for bluetooth|5V for bluetooth|CAN bus Power (Optional)||-|}  ==== Configuration Jumpers J26 e J27 ==== When the board is configured to provide the UART2 interface through the J5 connector, the J26 and J27 jumpers are used to configure the UART mode, as reported below: {| class="wikitable" |-!Jumper!RS232 mode!RS422 mode!RS485 mode|-|1-3|open|open|closed|-|5-7|open|closed|open|-|9-11|open|closed|open|-|2-4|open|open|closed|-|6-8|open|closed|closed|-|10-12|open|closed|closed|-|13-15|open|open|closed|-|14-16|open|open|closed|-|} === UART3 - J25 === J25 is a 10 pin (5x2x2.54mm) header connector. The following table reports the connector's pinout: {| class="wikitable" |-!Pin# !Pin name!Function!Notes|-|1, 2, 4, 6, 7, 8, 10|N.A.|N.C.|Not connected|-|3|UART3_RX|Uart Receive line||-|5|UART3_TX|Uart Transmit line||-|9|DGND|Ground||-|}  === Ethernet port - J6 === J6 is a standard RJ45 connectors connected to the Lizard integrated ethernet controller and PHY. {| class="wikitable" |-!Pin# !Pin name!Function!Notes|-|1|ETH_CTTD|Center Tap TX||-|2|ETH_TX+|Eth transmit data +||-|3|ETH_TX-|Eth transmit data -||-|4|ETH_RX+|Eth receive data +||-|5|ETH_RX-|Eth receive data -||-|6|ETH_CTRD|Center Tap RX||-|7|DGND|Ground||-|8|ETH_LED2|Eth speed led||-|9|DGND|Ground||-|10|ETH_LED1|Eth activity led||-|} === LCD LVDS connector - J8 === J8 is a Hirose (cod. DF13A-20DP-1.25V) double row 1.25mm pitch miniature crimping connector. The following table reports the connector's pinout:  {| class="wikitable" |-!Pin# !Pin name!Function!Notes|-|1, 2|3.3V_LCD|3.3 V||-|3, 4, 7, 10, 13, 16, 19|DGND|Ground||-|5|LCD_LVDS_D0-|LVDS Data 0 -||-|6|LCD_LVDS_D0+|LVDS Data 0 +||-|8|LCD_LVDS_D1-|LVDS Data 1 -||-|9|LCD_LVDS_D1+|LVDS Data 1 +||-|11|LCD_LVDS_D2-|LVDS Data 2 -||-|12|LCD_LVDS_D2+|LVDS Data 2 +||-|14|LCD_LVDS_CLK-|LVDS clock -||-|15|LCD_LVDS_CLK+|LVDS clock +||-|17|LCD_P17|Backlight PWM|Connected to LCD_BKLT_PWM|-|18|LCD_P18||Connected to 5V_LCD|-|20|LCD_P20||Connected to ground|-|21, 22|LVDS_SHIELD|LVDS shield||-|} === LCD Ziff connecor - J7 === J7 is an optional connector for an Ampire AM-800480STMQW-TB0 7" 800x480 display. The following table reports the connector's pinout: {| class="wikitable" |-!Pin# !Pin name!Function!Notes|-|1, 2, 9, 13, 17, 21, 25, 39, 40|DGND|Ground||-|3|LCD_PCLK|LCD Pixel clock||-|4|LCD_IRQ|||-|5|TSC_YP|||-|6|LCD_R0|||-|7|LCD_R1|||-|8|LCD_R2|||-|10|LCD_R3|||-|11|LCD_R4|||-|12|LCD_R5|||-|14|LCD_G0|||-|15|LCD_G1|||-|16|LCD_G2|||-|18|LCD_G3|||-|19|LCD_G4|||-|20|LCD_G5|||-|22|LCD_B0|||-|23|LCD_B1|||-|24|LCD_B2|||-|26|LCD_B3|||-|27|LCD_B4|||-|28|LCD_B5|||-|29|TSC_YM|||-|30|TSC_XM|||-|31|TSC_XP|||-|32|LCD_DE|||-|33, 34|3.3V_LCD|||-|35, 36, 37|5V_LCD|||-|38|LCD_BKLT_PWM|||-|} === Touch screen connecor - J28 === J28 is a 1.0mm pitch 4-pin ZIF connector. The following table reports the connector's pinout: {| class="wikitable" |-!Pin# !Pin name!Function!Notes|-|1|TSC_YP|Touch controller Y+||-|2|TSC_XP|Touch controller X+||-|3|TSC_YM|Touch controller Y-||-|4|TSC_XM|Touch controller X-||-|} === MicroSD slot - J12 === J12 is a Micro-SD card header. The following table reports the connector's pinout: {| class="wikitable" |-!Pin# !Pin name!Function!Notes|-|1|MMC1_DAT2|||-|2|MMC1_DAT3|||-|3|MMC1_CMD|||-|4|MMC_3.3V|||-|5|MMC1_CLK|||-|6|DGND|||-|7|MMC1_DAT0|||-|8|MMC1_DAT1|||-|9, 11|SD_SHIELD|||-|10, 12|MMC1_DAT5|||-|} === SDIO slot (DWM module) - J14 === J14 is a Molex dual row 0.50mm pitch SlimStack™ receptacle. This connector is dedicated to the [[Wireless_Module_(DWM) | DWM add-on module]].The following table reports the connector's pinout: {| class="desktopwikitable"|-!Pin# !Pin name!Function!Notes|-|1, 2|5V|||-|3, 4|3.3V|||-|5, 6, 9, 10, 19|DGND|||-|7|MMC2_CMD|||-|8|MMC2_CLK|||-|11|MMC2_DAT0|||-|12, 14, 16, 18, 20, 22|N.C.|Not connected||-|13|MMC2_DAT1|||-|15|MMC2_DAT2|||-|17|MMC2_DAT3|||-|21|UART2_RX||Mount option|-|23|UART2_CTS||Mount option|-|24|BT_F5||Connected to DSS_DATA20/DSI_DY1|-|25|UART2_TX||Mount option|-|26|BT_F2||Connected to DSS_DATA21/DSI_DX1|-|27|UART2_RTS||Mount option|-|28|WIFI_IRQ||Connected to DSS_DATA22/DSI_DY2|-|29|BT_EN||Connected to DSS_DATA19/DSI_DX0|-|30|WIFI_EN||Connected to DSS_DATA23/DSI_DX2|-|} === USB ports - J15 === J15 is a stacked, dual port USB Type A connector. ==== USB port 0 (''high speed'') ==== USB port 0 is mapped on the '''lower''' USB connector. The following table reports the connector's pinout: {| class="wikitable" |-!Pin# !Pin name!Function!Notes|-|B1|5V_USBH_0|5V||-|B2|USB0_DM|USB0 Data -||-|B3|USB0_DP|USB0 Data +||-|B4|DGND_USBH_0||Ground|-|} ==== USB port 1 (''full speed'') ==== USB port 1 is mapped on the '''higher''' USB connector. The following table reports the connector's pinout: {| class="wikitable" |-!Pin# !Pin name!Function!Notes|-|A1|5V_USBH_1|5V||-|A2|USBM1|USB0 Data -||-|A3|USBP1|USB1 Data +||-|A4|DGND_USBH_1|Ground||-|} === I2C bus - J18 === J18 is a 8-pin 1.25mm pitch vertical header. The following table reports the connector's pinout: {| class="wikitable" |-!Pin# !Pin name!Function!Notes|-|1, 5|DGND|Ground||-|4, 8|3.3V|3.3 V||-|2|I2C2_SDA|I2C #2 data||-|3|I2C2_SCL|I2C #2 clock||-|6|I2C3_SDA|I2C #3 data||-|7|I2C3_SCL|I2C #3 clock||-|} === GPIO - J19 === J19 is a 8-pin 1.25mm pitch vertical header. The following table reports the connector's pinout: {| class="wikitable" |-!Pin# !Pin name!Function!Notes|-|1, 8|DGND|Ground||-|2|MCBSP1_CLKX|GPIO||-|3|MCBSP1_DX|GPIO||-|4|MCBSP1_FSX|GPIO||-|5|MCBSP3_DR|GPIO||-|6|MCBSP3_FSX|GPIO||-|7|MCBSP4_DR|GPIO||-|} === SPI bus - J20 === J20 is a 8-pin 1.25mm pitch vertical header. The following table reports the connector's pinout: {| class="wikitable" |-!Pin# !Pin name!Function!Notes|-|1|DGND|Ground||-|2|MCSPI1_CLK|SPI1 clock||-|3|MCSPI1_CS0|SPI1 chip select #0||-|4|MCSPI1_CS1|SPI1 chip select #1||-|5|MCSPI1_CS2|SPI1 chip select #2||-|6|MCSPI1_SOMI|SPI1 slave output master input||-|7|MCSPI1_SIMO|SPI1 slave input master output||-|8|3.3V|3.3 V||-|} === Audio - J21 === J21 is a 8-pin 1.25mm pitch vertical header. The following table reports the connector's pinout: {| class="wikitable" |-!Pin# !Pin name!Function!Notes|-|1|AUD_PW2|Audio amplifier VO 2||-|2|AUD_PW1|Audio amplifier VO 1||-|3, 5, 7|DGND|Ground||-|4|LINEOUT_R|Audio coded lineout right||-|6|LINEOUT_L|Audio coded lineout left||-|8|MIC_INPUT|Microphone input||-|} === JTAG - J16 === J16 is a standard 20-pin 2.54mm pitch header connector (bottom side). The following table reports the connector's pinout: {| class="wikitable" |-!Pin# !Pin name!Function!Notes|-|1, 2|3.3V|3.3 V||-|3|JTAG_TRSTn|||-|5|JTAG_TDI|||-|7|JTAG_TMS|||-|9|JTAG_TCK|||-|11|JTAG_RTCK|||-|13|JTAG_TDO|||-|15|JTAG_RST#||Connected to MRSTn|-|4, 6, 8, 10, 12, 14, 16, 18, 20|DGND|Ground||-|17, 19|N.A.|Not connected||-|} == Versions ==As stated before, different versions of DACU board exist in order to support several SOMs and evaluation boards. The following pages provide some additional information (including '''schematics''' and '''BOMs''') related to the mating of DACU with the supported SOMs. * [[Dacu for the Diva SOM]]* [[Dacu for the Axel SOM]] ==Layout==* http://mirror.dave.eu/diva/dacu//dacu-CS091612C_component_view.pdf ==Mechanical==* DXF: http://mirror.dave.eu/diva/dacu/dacu_2D_CS091612C.zip* IDF (3D): http://mirror.dave.eu/diva/dacu//dacu_3D_CS091612C.zip