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Summary of Contents for Analog Devices ADSP21835W-EV-SOM
- Page 1 ® ADSP21835W-EV-SOM Manual Revision 1.0, January 2023 Part Number 82-ADSP21835W-EV-SOM-01 Analog Devices, Inc. One Analog Way Wilmington, MA 01887...
- Page 2 Analog Devices, Inc. reserves the right to change this product without prior notice. Information furnished by Ana- log Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use; nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under the patent rights of Analog Devices, Inc.
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Page 3: Table Of Contents
Manual Contents ............................1–1 Technical Support ............................1–2 Supported Integrated Circuit ......................... 1–2 Supported Tools............................. 1–3 Product Information ............................1–3 Analog Devices Website..........................1–3 EngineerZone ............................. 1–3 Using the Board Product Overview ............................2–1 Package Contents............................2–3 Default Configuration ........................... 2–3 CrossCore Embedded Studio (CCES) Setup .................... - Page 4 Power ( DS4)............................3–10 GPIO ( DS1, DS2, DS3) ........................3–10 Reset ( DS5) ............................. 3–11 Connectors ..............................3–11 JTAG ( P6)............................... 3–12 USB Type C Connector ( P1)........................3–12 SoM Interface Connection ( J1, J2 and J3) ..................3–12 ® ADSP21835W-EV-SOM Manual...
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Page 5: Preface
I/O signals. Through the high speed external connector array, the ADSP21835W-EV-SOM is intended for use with a growing family of SoM carrier products that contain a variety of peripherals to support different applications. The SoM carrier base products that exist today are the EV-SOMCRR- EZKIT and EV-SOMCRR-EZLITE. -
Page 6: Technical Support
A companion file in PDF format documenting all of the circuits used on the board is available on the website at http://www.analog.com/ADSP21835W-EV-SOM. Technical Support You can reach Analog Devices technical support in one of the following ways: • Post your questions in the processors and DSP support community at EngineerZone ®... -
Page 7: Supported Tools
If you are a registered user, just log on. Your user name is your e-mail address. EngineerZone EngineerZone is a technical support forum from Analog Devices, Inc. It allows you direct access to ADI technical support engineers. You can search FAQs and technical information to get quick answers to your embedded process- ing and DSP design questions. -
Page 8: Using The Board
2 Using the Board This chapter provides information on the major components and peripherals on the board, along with instructions for installing and setting up the emulation software. Product Overview Below is an image of the ADSP21835W-EV-SOM board. ® 2–1 ADSP21835W-EV-SOM... - Page 9 Product Overview Figure 2-1: Board View The board features: • Analog Devices ADSP-21835W processor • SHARC-FX Core • 400 ball BGA • 25 MHz oscillator • DDR3 Memory • 256Mx16 bit (4Gbit ) • ISSI IS43TR16256BL-107MBL • 1.39V • SPI Flash Quad (SPI2) Memory •...
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Page 10: Package Contents
Package Contents Your ADSP21835W-EV-SOM package contains the following items. • ADSP21835W-EV-SOM board Contact the vendor where you purchased your ADSP21835W-EV-SOM evaluation board or contact Analog Devices, Inc. if any item is missing. Default Configuration The Default Hardware Setup figure shows the default settings for jumpers and switches and the location of the jumpers, switches, connectors, and LEDs. -
Page 11: Crosscore Embedded Studio (Cces) Setup
ICE-1000 or ICE-2000 for debugging. When the ADSP21835W-EV-SOM is connected to a carrier board the Debug Agent on the carrier board can be used. To use this Debug Agent, all postions on SW1 (on the carrier board) must be in the ON position. If an emula- tor, such as the ICE-1000 or ICE-2000, is used instead all postions on SW1 must be in the OFF position. -
Page 12: Power-On-Self Test
Refer to the readme file provided with each example for more information. Reference Design Information A reference design info package is available for download on the Analog Devices Web site. The package provides information on the schematic design, layout, fabrication, and assembly of the board. -
Page 13: Is43Tr16256Bl - 256Mx16 4Gb Ddr3 Sdram
• TDQS (Termination Data Strobe) supported (x8 only) • OCD (Off-Chip Driver Impedance Adjustment) • Dynamic ODT (On-Die Termination) • Driver strength : RZQ/7, RZQ/6 (RZQ = 240 Ω) • Write Leveling • Up to 200 MHz in DLL off mode 2–6 ® ADSP21835W-EV-SOM Manual... -
Page 14: Lt8636 - 42V, 5A/7A Peak Synchronous Step-Down Silent Switcher With 2.5Μa Quiescent Current
5MHz. For systems with higher power requirements, multi-phasing parallel converters is readily implemented. The LTC3310S uses a constant-frequency, peak current mode control architecture for fast transient response. A 500mV reference allows for low voltage outputs. 100% duty cycle operation delivers low drop out. ® 2–7 ADSP21835W-EV-SOM Manual... -
Page 15: Adp151 - Ultralow Noise, 200 Ma, Cmos Linear Regulator
Short-circuit and thermal overload protection circuits prevent damage in adverse conditions. The ADP151 is availa- ble in tiny 5-lead TSOT, 6-lead LFCSP, and 4-ball, 0.4 mm pitch, halide-free WLCSP packages for the smallest footprint solution to meet a variety of portable power application requirements. 2–8 ® ADSP21835W-EV-SOM Manual... -
Page 16: Hardware Reference
Hardware Reference 3 Hardware Reference This chapter describes the hardware design of the ADSP21835W-EV-SOM. System Architecture The board's configuration is shown in the Block Diagram figure. ® 3–1 ADSP21835W-EV-SOM Manual... -
Page 17: Software-Controlled Switches (Softconfig)
C software-control- led switches. The remaining mechanical switches are provided for the boot mode and pushbuttons. Reference any SoftConfig*.c file found in the installation directory for an example of how to set up the SoftConfig feature of 3–2 ® ADSP21835W-EV-SOM Manual... -
Page 18: Overview Of Softconfig
EXAMPLE_SIGNAL_B, the IO expander is used to change ENABLE_A to a logic 1 through software that interfa- ces with the Microchip. The same procedure for ENABLE_B disconnects EXAMPLE_SIGNAL_C from EXAMPLE_SIGNAL_D. Figure 3-2: Example of Individual FET Switches ® 3–3 ADSP21835W-EV-SOM Manual... - Page 19 In this example, the IO expander is not shown but controls the signal CONTROL_LETTER_NUMBER and allows the user to change the selection through software. 3–4 ® ADSP21835W-EV-SOM Manual...
- Page 20 SWE and SWF is OFF. In order to connect the letters instead of the numbers, the user physically changes all switches on SWC and SWD to the OFF position and all switches on SWE and SEF to the ON position. ® 3–5 ADSP21835W-EV-SOM Manual...
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Page 21: Softconfig On The Board
Figure 3-5: Example of a Mechanical Switch (Equivalent to Example of Bus Switch) SoftConfig on the Board The Analog Devices ADP5587-1 GPIO extenders provide control for individual electronic switches. The TWI in- terface of the processor communicates with the GPIO extender devices. There are individual switches with default settings that enable basic board functionality. - Page 22 Enable FTDI UART to USB PA_06/SPI0_CLK/ UART0_TXb/OSPI_D4/ SMC0_D06/TM0_ACLK1 PA_07/SPI0_MISO/ UART0_RXb/OSPI_D5/ SMC0_D07/TM0_ACI0 UART0_FLOW_ Enables UART Flow Control on PA_08/SPI0_MOSI/ FTDI UART0_RTSb/OSPI_D6/ SMC0_D08/TM0_ACLK2 PA_09/SPI0_SEL1b/ UART0_CTSb/OSPI_D7/ SMC0_D09/SPI0_SSb SOM_TWI2_EN Enables TWI2 on SOM connec- High TWI2 SOM_TWI1_EN Enables TWI2 on SOM connec- High TWI1 ® 3–7 ADSP21835W-EV-SOM Manual...
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Page 23: Switches
XSPI_EN Enables xSPI on SOM xSPI Switches This section describes operation of the switches. The switch locations are shown in the Switch/Jumper Locations figure. Boot Mode Select Power Selection Reset Button Figure 3-6: Switch/Jumper Locations 3–8 ® ADSP21835W-EV-SOM Manual... -
Page 24: Boot Mode Select ( S1)
USB Port and Pin 2-3 selects Power from the SoM Interface Connection. When using the EV-SOMCRR-EZKIT or other plug in carrier board, use Jumper setting Pin 2-3. LEDs This section describes the on-board LEDs. The LED Locations figure shows the LED locations. ® 3–9 ADSP21835W-EV-SOM Manual... -
Page 25: Fault ( Ds6)
Three LEDs are connected to the SoftConfig(see the GPIO LEDs table). The LEDs are active low and are turned ON (amber) by writing to the U24 SoftConfig IC. Table 3-4: GPIO LEDs Reference Designator Programmable Flag Pin SoftSwitch SoftSwitch 3–10 ® ADSP21835W-EV-SOM Manual... -
Page 26: Reset ( Ds5)
LED. For more information, see Reset Pushbutton ( S2). Connectors This section describes connector functionality and provides information about mating connectors. The connector locations are shown in the Connector Locations figure. JTAG Power Figure 3-8: Connector Locations Top View ® 3–11 ADSP21835W-EV-SOM Manual... -
Page 27: Jtag ( P6)
USB Type C Power Delivery for powering the SoM when JP1 is set to position 1-2. And USB to UART signals to Silicon Labs CP2102N-A02-GQFN28 Part Description Manufacturer Part Number USB Type C MOLEX 1054500101 Mating Cable USB Type C SoM Interface Connection ( J1, J2 and J3) 3–12 ® ADSP21835W-EV-SOM Manual... - Page 28 DAI0_PIN19 SPI3_MISO MLB_DATN DAI1_PIN09 DAI1_PIN19 USB_D1 USB_CLK MLB_DAT Table 3-6: SoM Interface B Connector (J2) Signal Signal Signal Signal Signal GND1 OSPI_D7 TWI2_SDA MSI_D3 LINKPORT0_D7 GND2 SPI1_SEL2b UART2_RXb GND8 LINKPORT1_D7 SP2_OSPI_MISO 23 SPI2_SEL2b UART0_TXb MSI_D4 LINKPORT0_D6 ® 3–13 ADSP21835W-EV-SOM Manual...
- Page 29 GND2 GND4 CLK1 PPI_D17 ~UART3_RX ETH0_MDIO ETH0_RXCTL_C PPI_CLK PPI_D06 PPI_D16 ETH1_MDIO ETH0_PTPCLKI CLK2 PPI_D18 ~UART3_RTS ETH0_MDC GND3 PPI_FS1 PPI_D07 GND11 ETH1_MDC ETH0_PTPAUX- GND8 PPI_D19 ~UART3_CTS ETH0_MD_INT ETH0_TXD3 PPI_FS2 PPI_D08 VDD_EXT ETH1_RXD1 ETH0_PTPPPS0 JTG0_TMS/ PPI_D20 SYS_FAULT SWDIO 3–14 ® ADSP21835W-EV-SOM Manual...
- Page 30 TARGET_RESET 78 ETH1_R VSS1 EFCLK ETH0_RXD0 GND6 PPI_D04 PPI_D14 VDD2 ETH1_INTb AUDIO_CLK GND9 UART3_ VSS2 Table 3-8: Mating Connector Part Description Manufacturer Part Number 100-pin, 0.64 mm SAMTEC LSS-150-01-L-DV-A-K Mating Connector 100-pin, 0.64 mm SAMTEC LSS-150-01-L-DV-A-K ® 3–15 ADSP21835W-EV-SOM Manual...
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