SAMA5D27 SOM1 Kit1 User's Guide Scope This user's guide provides detailed information on the overall design of the SAMA5D27 SOM1 Kit1 and describes how to use the kit. The kit is the evaluation platform for the SAMA5D27 SIP (System-In-Package) and SOM (System-On- Module), and comprises: •...
SAMA5D27 SOM1 Kit1 Introduction Introduction Document Layout The document is organized as follows: • Introduction • Product Overview – Important information about the kit • Board Components – Specifications of the kit and high-level description of the major components and interfaces •...
SAMA5D27 SOM1 Kit1 Product Overview Product Overview Kit Contents The kit includes the following: • One baseboard with soldered SOM • One USB cable Features The kit comprises a baseboard with a soldered SAMA5D27 SOM1 module. The module features a SAMA5D27-D1G-CU SIP embedding a 1-Gbit DDR2 SDRAM.
SAMA5D27 SOM1 Kit1 Product Overview ...continued Characteristics Specifications Components Debug port One J-Link-OB and J-Link-CDC Microchip SAM3U micro-controller with embedded J-Link firmware One JTAG interface – Board Monitor One RGB (Red, Green, Blue) LED – Four push button switches Power ON, Reset, Wakeup, User Free...
Baseboard Components Baseboard Components This section covers the specifications of the SAMA5D27 SOM1 Kit1 baseboard and provides a high-level description of the baseboard's major components and interfaces. This document is not intended to provide a detailed documentation about the processor or about any other component used on the baseboard.
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SAMA5D27 SOM1 Kit1 Baseboard Components Figure 3-2. SAMA5D27 SOM1 Kit1 Block Diagram USB A&B ECC608 SD Card Flash Connector GPIO POWER Connector System Supplies USB-B 3v3, 1v8 REGULATOR Connector QSPI CRYPTO SDHC1 3.3V, 1.8V Power Power Power Switch VDDBU Switch SDHC0...
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Closed Enables 3.3V power mikroBUS1 (closed=enable) Closed Enables 3.3V power mikroBUS2 (closed=enable) 3.1.2 Baseboard Connectors The following table describes the interface connectors on the SAMA5D27 SOM1 Kit1 baseboard. Table 3-2. Baseboard Interface Connectors Connector Interfaces to CLK_AUDIO test point (not populated)
SAMA5D27 SOM1 Kit1 Baseboard Components ...continued Connector Interfaces to J29-J30 mikroBUS2 connectors Tamper and analog comparator connector SHDN test point (not populated) Function Blocks 3.2.1 SAMA5D27 SOM1 The SAMA5D27 SOM1 main features are as follows: ® ® • Ultra-small SIP (SAMA5D27-D1G-CU) embedding an ultra-low-power SAMA5D27 Arm...
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SAMA5D27 SOM1 Kit1 Baseboard Components 3.2.2 Power Supply Topology and Power Distribution 3.2.2.1 Input Power Options The board power source can come through either a USB connector (J10 or J17) connected to a PC or a 5V DC-USB power supply unit. These USB power sources are sufficient to supply the board in most applications.
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SAMA5D27 SOM1 Kit1 Baseboard Components While the external power is being applied, the baseboard can be shut down by software and then woken up by action on the PB2 push button, which activates the WKUP signal. The figure below shows the power management scheme.
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SAMA5D27 SOM1 Kit1 Baseboard Components • One reset push button (PB1). When pressed and released, the baseboard is reset. • One wake-up push button (PB2) connected to the SAMA5D27 WKUP pin, used to exit the processor from Backup mode. •...
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SAMA5D27 SOM1 Kit1 Baseboard Components 3.2.5.1 CS Disable Boot One jumper (J13) controls the selection (CS#) of the bootable memory components (QSPI) using a non- inverting 3-state buffer. Figure 3-13. CS Disable Boot VDD_3V3 0402 VDD_3V3 (SOM) HDR-2.54 Male 1x2 DISABLE_BOOT...
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SAMA5D27 SOM1 Kit1 Baseboard Components ...continued Pin No Mnemonic Signal Description – VDDSDHC (3.3V or – Power line 1.8V) SDMMC0_CK_PA0 Clock line SDMMC0_CD_PA13 PA13 Card detect SDMMC0_DAT0_PA2 Data line SDMMC0_DAT1_PA3 Data line SDMMC0_DAT2_PA4 Data line SDMMC0_DAT4_PA6 Data line SDMMC0_DAT5_PA7 Data line...
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SAMA5D27 SOM1 Kit1 Baseboard Components Figure 3-17. microSD Socket J14 Location The table below describes the pin assignment of microSD connector J14. Table 3-7. microSD Socket J14 Pin Assignment Pin No Mnemonic Signal Description SDMMC1_DAT2 PA20 Data bit 2 SDMMC1_DAT3 PA21 Data bit 3...
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SAMA5D27 SOM1 Kit1 Baseboard Components ...continued Pin No Mnemonic Signal Description – Common ground – Common ground – Common ground ™ 3.2.6.4 CryptoAuthentication ATECC608A is a member of the CryptoAuthentication family of crypto engine authentication devices with highly secure hardware-based key storage.
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SAMA5D27 SOM1 Kit1 Baseboard Components Figure 3-19. Ethernet PHY TX_P TX_N RX_P RX_N 0.1uF 0.1uF 0402 0402 GND_ETH Right yellow LED Left Green LED EARTH_ETH EARTH_ETH VDD_3V3 RJ45 J00-0061 RJ45 LINK ETH_LED0 ETH_LED0 470R Figure 3-20. Ethernet RJ45 Connector J15 Location The table below describes the pin assignment of Ethernet connector J15.
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SAMA5D27 SOM1 Kit1 Baseboard Components ...continued Pin No Mnemonic Signal Description Decoupling capacitor – Decoupling capacitor – Receive negative differential pair – EARTH / GND Common ground ACT LED (A) LED activity (not used) ACT LED (K) LED activity (not used)
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SAMA5D27 SOM1 Kit1 Baseboard Components The USB-A port (J17) features a VBUS insert detection function through ladder-type resistors R70 and R71. Figure 3-21. USB-A Type microAB Connector VBUS_USBA USBA_VBUS_5V PD20 100k 0402 0.1uF 200k 20pF 0402 0402 0402 VBUS USBA_N USBA_DM...
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SAMA5D27 SOM1 Kit1 Baseboard Components Table 3-11. USB-A Connector J17 Pin Assignment Pin No Mnemonic Signal Description VBUS 5V power Data minus Data plus On-the-go identification Common ground 3.2.7.4 USB-B Interface The figure below shows the USB implementation on the USB-B port terminated on USB Type C connector J19.
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SAMA5D27 SOM1 Kit1 Baseboard Components Figure 3-24. USB-B Type C Connector J19 Location The table below describes the pin assignment of USB-B connector J19. Table 3-12. USB-B Connector J19 Pin Assignment Pin No Mnemonic Signal Description Ground return SSTXp1 SuperSpeed differential pair #1, TX, positive (NOT USED)
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SAMA5D27 SOM1 Kit1 Baseboard Components ...continued Pin No Mnemonic Signal Description Ground return Ground return SSRXp1 SuperSpeed differential pair #1, RX, positive (NOT USED) SSRXn1 SuperSpeed differential pair #1, RX, negative (NOT USED) VBUS Bus power SBU2 Sideband use (SBU) USB 2.0 differential pair, position 2, negative...
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SAMA5D27 SOM1 Kit1 Baseboard Components 3.2.7.5 HSIC Interface High-Speed Inter-Chip (HSIC) is a standard for USB chip-to-chip interconnect with a 2-signal (strobe, data) source synchronous serial interface using 240 MHz DDR signaling to provide only high-speed 480 Mbps data rate.
SAMA5D27 SOM1 Kit1 Baseboard Components Figure 3-28. CAN Connector J16 Location Table 3-14. CAN Connector J16 Pin Assignment Mnemonic Signal Description CANH Differential positive CANL Differential negative Ground External Interfaces 3.3.1 LCD TFT Interface The baseboard provides a FPC connector with 24 bits of data and control signals to the LCD interface.
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SAMA5D27 SOM1 Kit1 Baseboard Components Figure 3-30. LCD Connector J26 Location The table below describes the pin assignment of LCD connector J26. Table 3-15. LCD Connector J26 Pin Assignment Pin No Signal Signal RGB Interface Function PA17 Shared with SPI_NPCS0 pin 40...
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SAMA5D27 SOM1 Kit1 Baseboard Components ...continued Pin No Signal Signal RGB Interface Function – LCDDAT8 PB19 Data line (GREEN0) LCDDAT9 PB20 Data line (GREEN1) LCDDAT10 PB21 Data line (GREEN2) LCDDAT11 PB22 Data line (GREEN3) – – LCDDAT12 PB23 Data line (GREEN4)
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SAMA5D27 SOM1 Kit1 Baseboard Components ...continued Pin No Signal Signal RGB Interface Function TWCK TWI_SCL I2C clock line (maXTouch) GPIO IRQ1 maXTouch interrupt line GPIO PC25 IRQ2 Interrupt line for other I2C devices LCDPWM Backlight control RESET nRST RESET Reset for both display and maXTouch Main_5V/3V3 3.3V or 5V supply (R81/R83 selected)
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SAMA5D27 SOM1 Kit1 Baseboard Components Figure 3-32. ISC Connector J27 Location The table below describes the pin assignment of ISC connector J27. Table 3-16. ISC Connector J27 Pin Assignment SAMA5D27 Signal Pin No Signal SAMA5D27 Function Function 3.3V power – VDD_3V3 –...
SAMA5D27 SOM1 Kit1 Baseboard Components ...continued SAMA5D27 Signal Pin No Signal SAMA5D27 Function Function Ground – ISC_PCK PC21 Clock Ground – ISC_D0 Data0 Data1 PC10 ISC_D1 ISC_D2 PC11 Data2 Data3 PC12 ISC_D3 ISC_D4 PC13 Data4 Data5 PC14 ISC_D5 ISC_D6 PC15...
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SAMA5D27 SOM1 Kit1 Baseboard Components • One UART through USB J-Link-CDC • Two JTAG interfaces, one connected from the MPU using connector J11 and one through the J- Link-OB interface USB port J10 3.4.1 Debug JTAG This section describes the signals and connectors related to the JTAG interface.
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SAMA5D27 SOM1 Kit1 Baseboard Components ...continued Pin No Mnemonic Signal Description TMS TEST MODE SELECT JTAG mode set input into target processor Common ground TCK TEST CLOCK - Output timing signal, for synchronizing test logic and control JTAG clock signal into target processor...
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SAMA5D27 SOM1 Kit1 Baseboard Components Table 3-21. Debug COM Port PIOs Signal Descriptions Mnemonic Shared Signal Description DBGU_RXD Receive data DBGU_TXD Transmit data Figure 3-40. J-Link-OB and CDC USB Connector J10 Location The table below describes the pin assignment of USB connector J14.
SAMA5D27 SOM1 Kit1 Baseboard Components PIO Usage on Expansion Connectors This section describes the signals and connectors related to the PIO usage on expansion connectors. The baseboard includes numerous peripherals. Many of these are connected to the GPIO block so that the I/O pins can be configured to carry out many alternative functions.
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3.5.2 mikroBUS Interfaces The SAMA5D27 SOM1 Kit1 hosts two pairs of 8-pin female headers acting as mikroBus interfaces. The mikroBUS standard defines the main board sockets and add-on boards (a.k.a. "click boards") used for interfacing microprocessors with integrated modules with proprietary pin configuration and silkscreen markings.
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SAMA5D27 SOM1 Kit1 Baseboard Components Figure 3-44. mikroBUS1 Connectors J24 and J25 Location The table below describes the pin assignment of mikroBUS1 connectors J24 and J25. Table 3-24. mikroBUS1 Connectors J24 and J25 Pin Assignment SAMA5D27 SAMA5D27 Function J24 Signal Pin No.
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SAMA5D27 SOM1 Kit1 Baseboard Components ...continued SAMA5D27 SAMA5D27 Function J29 Signal Pin No. J30 Signal Function GROUND – GROUND 3.5.3 Pmod Interface Pmod devices are Digilent’s line of small I/O interface boards that offer an ideal way to extend the capabilities of programmable logic and embedded control boards.
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SAMA5D27 SOM1 Kit1 Baseboard Components Figure 3-48. Pmod Connector J21 Location 3.5.3.1 Pmod Configuration A set of jumpers, J20 and J23, is used to configure this type of interface. The table below describes the jumper configuration to select one of the Pmod functions (SPI, TWI or USART).
SAMA5D27 SOM1 Kit1 Installation and Operation Installation and Operation System and Configuration Requirements The SAMA5D27 SOM1 Kit1 requires the following: • Personal Computer • USB cable (included in the kit box) Baseboard Setup Follow these steps to verify proper operation of the kit: Unpack the baseboard, taking care to avoid electrostatic discharge.
SAMA5D27 SOM1 Kit1 Errata Errata Incorrect NRST and WKUP Push Button Markings The PCB silkscreen markings for push buttons PB1 (NRST) and PB2 (WKUP) were inverted. PB1/NRST is actually located to the left of PB2/WKUP, as shown in the figure below. However, the produced baseboards have been patched with stickers, which currently convey correct information to the user.
SAMA5D27 SOM1 Kit1 Appendix: Schematics and Layouts Appendix: Schematics and Layouts This appendix contains the following schematics and layouts: • Title and Revision History • Block Diagram • PIO Muxing Table • Power Supply • SAMA5D27 - SOM • JTAG and DBGU •...
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Figure 6-1. Title and Revision History rotatethispage90 Schematic: SAMA5D27-SOM1-EK1 Revision History DATE REVISION DESCRIPTION SHEET SHEET NAME Title & Revision History 6 Mar 2017 SAMA5D27-SOM-BB_ REVA Prototype Release Block Diagram 21 Jun 2017 SAMA5D27-SOM1-EK1_REVB New Release PIO Muxing 19 Oct 2017 SAMA5D27-SOM1-EK1_REVC New Release Power Supply...
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Figure 6-2. Block Diagram rotatethispage90 Push Reset 5V INPUT Buttons WAKE UP POWER Sheet 8 USB A Sheet 4 5V INPUT USB B Sheet 4 Host DEVICE USB A,B,C Power rails USB C HSIC Sheet 8 Embedded JTAG debugger User LEDs MICROCHIP Push Buttons SAMA5D27-SOM1...
SAMA5D27 SOM1 Kit1 Revision History Revision History Doc. Rev. Changes C – 10/2018 Crypto memory U11 changed from ECC508 to ECC608. Schematics regenerated. B – 06/2018 3.3.1 LCD TFT Interface: added TM5000 series to list of supported LCD display types.
SAMA5D27 SOM1 Kit1 The Microchip Web Site Microchip provides online support via our web site at http://www.microchip.com/. This web site is used as a means to make files and information easily available to customers. Accessible by using your favorite Internet browser, the web site contains the following information: •...
SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries. GestIC is a registered trademark of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries.
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