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== Technical Support ==
We are committed to making our products easy to use and will help customers use our CPU modules in their systems. Technical support is delivered through email for registered kits owners. Support requests can be sent to '''support-diva@dave.eu'''.
Software upgrades are available for download in the restricted download area of '''DAVE Embedded Systems''' web site: httphttps://www.dave.eu/reserved-area. An account is required to access this area.Please refer to our Web site at httphttps://www.dave.eu/dave-cpu-module-am335x-diva.html for the latest product documents, utilities, drivers, Product Change Notices, Board Support Packages, Application Notes, mechanical drawings and additional tools and software.
== Related Documents ==
'''N.B. The latest Hardware Manual version is 1.0.6.'''
Please download the [httphttps://www.dave.eu/sites/default/files/files/diva-hm.pdf Diva Hardware Manual in pdf format].
== Conventions, Abbreviations, Acronyms ==
= Introduction =
Diva is a family of system-on-modules (SOM) that belongs to [httphttps://www.dave.eu/files/roadmap.pdf '''DAVE Embedded Systems''' ''Lite'' Line product class].
[[File:Diva-400.png|400px]]
This chapter describes the mechanical characteristics of the Diva module.
Mechanical drawings are available in DXF format from the Diva page on '''DAVE Embedded Systems''' website: httphttps://www.dave.eu/dave-cpu-module-am335x-diva.html
== Board Layout ==
== CAD Drawings ==
* 2D (DXF format): httphttps://www.dave.eu/sites/default/files/files/diva.dxf.zip * 3D (STEP format): httphttps://www.dave.eu/sites/default/files/files/diva_stp.zip
= Power, reset and control =
== Boot Options ==
AM335x processor provides several boot sequences selectable via BTMODE[15:0] bootstrap pins. In order to fully understand how boot works on Diva platform, please refer to chapter 26 ("Initialization") of the [httphttps://www.ti.com/litvlit/ug/spruh73p/spruh73p.pdf/spruh73g AM335x Technical Reference Manual].
SYSBOOT[15:0] terminals are respectively LCD_DATA[15:0] inputs, latched on the rising edge of PWRONRSTn. The booting device list is created based on the SYSBOOT pins. A booting device can be a memory booting device (soldered flash memory or temporarily booting device like memory card) or a peripheral interface connected to a host. The main loop of the booting procedure goes through the booting device list and tries to search for an image from the currently selected booting device. This loop is exited if a valid booting image is found and successfully executed or upon watchdog expiration. The memory booting procedure is executed when the booting device type is one of NOR, NAND, MMC or SPI-EEPROM. The peripheral booting is executed when the booting device type is Ethernet, USB or UART.
O = Output<br>
D = Differential<br>
Z =High impedance<br>
S = Supply voltage<br>
G = Ground<br>
A= Analog signal
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| style="background:#f0f0f0;" align="left" | '''Pull'''||This refers to discrete pull-up/down resistors (if any). Additional pull-up/downs may be present if the signal is connected to any integrated circuit. In this case, please refer to the datasheet of the IC.
| 175||AM335X_GMII1_RXCLK||CPU.[GMII1_RXCLK/UART2_TXD/RGMII1_RCLK/MMC0_DAT6/MMC1_DAT1/UART1_DSRN/MCASP0_FSX/GPIO3_10]||L18||VAUX2||IO||||
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| 176||NC/Monitoring Optional routing: VDIG2|||||||SO||||By default, this pin must not be connected. Optionally, it can route power voltages generated by Diva PSU. This option is meant to allow monitoring of such voltages by carrier board circuitry. It is not meant to power carrier board devices. As these options requires custom manufacturing BOMs, please contact the [mailto:sales@dave.eu Sales Department] for more information.
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| 177||AM335X_GMII1_TXCLK||CPU.[GMII1_TXCLK/UART2_RXD/RGMII1_TCLK/MMC0_DAT7/MMC1_DAT0/UART1_DCDN/MCASP0_ACLKX/GPIO3_9]||K18||VAUX2||IO||||
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| 178||NC/Monitoring Optional routing: DDR_VDDS|||||||SO||||By default, this pin must not be connected. Optionally, it can route power voltages generated by Diva PSU. This option is meant to allow monitoring of such voltages by carrier board circuitry. It is not meant to power carrier board devices. As these options requires custom manufacturing BOMs, please contact the [mailto:sales@dave.eu Sales Department] for more information.
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| 179||PMIC_CLK32OUT||PMIC.CLK32KOUT||PMIC.38||VAUX33
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| 180||OUT_VAUX33||PMIC.VAUX33||PMIC.4||VAUX33
|SOO||||This signal can be used to synchronize powering on/off of carrier board circuitry that interfaces CPU I/O directly. Please refer to section [[Hardware_Manual_(Diva)#Power_Supply_Unit_.28PSU.29_and_recommended_power-up_sequence | PSU and recommended power up sequence]].
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| 181||DGND||||||||G
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| 182||NC/Monitoring Optional routing: VMMC|||||||SO||||By default, this pin must not be connected. Optionally, it can route power voltages generated by Diva PSU. This option is meant to allow monitoring of such voltages by carrier board circuitry. It is not meant to power carrier board devices. As these options requires custom manufacturing BOMs, please contact the [mailto:sales@dave.eu Sales Department] for more information.
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| 183||PMIC_PWR_EN||CPU.PMIC_PWR_EN, PMIC.PWRHOLD||CPU.C6, PMIC.1||VRTC||O||||
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| 184||NC/Monitoring Optional routing: 3.3V|||||||SO||||By default, this pin must not be connected. Optionally, it can route power voltages generated by Diva PSU. This option is meant to allow monitoring of such voltages by carrier board circuitry. It is not meant to power carrier board devices. As these options requires custom manufacturing BOMs, please contact the [mailto:sales@dave.eu Sales Department] for more information.
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| 185||PMIC_INT1||PMIC.INT1||PMIC.45||VAUX33
Measurements have been performed on the following platform:
* Diva SOM @ 5V
* CPU frequency: 800 MHz
* Carrier board: DivaEVB-Lite on DACU
* System software: DIVELK preliminary version
The test bench runs the following softwarea stress test suite, comprising several processes:
* burnCortexA8 in continuous loop
