Analog Devices EV-21569-SOM User manual

EV-21569-SOM ® Manual
Revision 1.0, September 2020
Part Number
82-EV-21569-SOM-01
Analog Devices, Inc.
One Technology Way
Norwood, MA 02062-9106

Copyright Information
© 2020 Analog Devices, Inc., ALL RIGHTS RESERVED. This document may not be reproduced in any form
without prior, express written consent from Analog Devices, Inc.
Disclaimer
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.
Trademark and Service Mark Notice
The Analog Devices logo, Blackfin, Blackfin+, SHARC, SHARC+, CrossCore, VisualDSP++, EZ-KIT, EZ-Extend-
er, and EngineerZone are registered trademarks of Analog Devices, Inc.
All other brand and product names are trademarks or service marks of their respective owners.
Regulatory Compliance
The EV-21569-SOM evaluation board is designed to be used solely in a laboratory environment. The board is not
intended for use as a consumer-end product or as a portion of a consumer-end product. The board is an open sys-
tem design, which does not include a shielded enclosure and, therefore, may cause interference to other electrical
devices in close proximity. This board should not be used in or near any medical equipment or RF devices.
The EV-21569-SOM evaluation board contains ESD (electrostatic discharge) sensitive devices. Electrostatic charges
readily accumulate on the human body and equipment and can discharge without detection. Permanent damage may
occur on devices subjected to high-energy discharges. Proper ESD precautions are recommended to avoid perform-
ance degradation or loss of functionality. Store unused boards in the protective shipping package.
EV-21569-SOM ® Manual ii

Contents
Preface
Purpose of This Manual................................................................................................................................. 1–1
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 .................................................................................................. 2–4
Debug Interface ............................................................................................................................................. 2–5
Board Power .................................................................................................................................................. 2–5
Power-On-Self Test........................................................................................................................................ 2–5
Example Programs ......................................................................................................................................... 2–5
Reference Design Information ....................................................................................................................... 2–5
FT232R - USB to UART............................................................................................................................... 2–6
IS25LP512M - 512M-bit Serial Flash Memory with Dual and Quad SPI ..................................................... 2–7
IS43TR16512BL - 1Gx8, 512Mx16 8Gb DDR3 SDRAM ...........................................................................2–7
Hardware Reference
System Architecture ....................................................................................................................................... 3–1
Software-Controlled Switches (SoftConfig).................................................................................................... 3–1
Overview of SoftConfig.............................................................................................................................. 3–1
EV-21569-SOM ® Manual iii

SoftConfig on the Board............................................................................................................................. 3–5
Programming SoftConfig Switches............................................................................................................. 3–5
Switches......................................................................................................................................................... 3–8
Boot Mode Select ( SW1 )........................................................................................................................... 3–9
Reset Pushbutton ( SW2 )........................................................................................................................... 3–9
Jumpers ......................................................................................................................................................... 3–9
Power ( JP1 )............................................................................................................................................. 3–9
LEDs ............................................................................................................................................................. 3–9
Fault ( LED1 ) .......................................................................................................................................... 3–10
Power ( LED5 ) ........................................................................................................................................ 3–10
GPIO ( LED4, LED6, LED7 ) ............................................................................................................ 3–10
Reset ( LED8 ).......................................................................................................................................... 3–11
Connectors .................................................................................................................................................. 3–11
JTAG ( P1 ).............................................................................................................................................. 3–12
MicroUSB Connector ( P2 ) .................................................................................................................... 3–12
SoM Interface Connection ( J1,J2,and J3 )...................................................................................... 3–13
iv EV-21569-SOM ® Manual

1 Preface
Thank you for purchasing the Analog Devices, Inc. System-on-Module (SoM) EV-21569-SOM evaluation board.
The EV-21569-SOM primarily hosts the ADSP-21569 audio processor, 8 Gbit of ISSI DDR3 memory, a 512 Mbit
Quad SPI FLASH, voltage regulation, a FTDI UART to USB interface, and a high speed external connector array
that contains all of the peripheral I/O signals. Through the high speed external connector array, the EV-21569-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-AUTO .
The CrossCore Embedded Studio®(CCES) software development tool chain is required for a full evaluation of this
hardware platform. The EV-21569-SOM can also be used in a limited standalone mode while not plugged into a
SoM Carrier such as the EV-SOMCRR-EZKIT or EV-SOMCRR-AUTO . The standalone mode is useful for evaluat-
ing the CCES Software Development Tools and benchmarking software algorithms that do not require peripheral
I/O.
The evaluation board is designed to be used in conjunction with the CCES 2.9.3 (or newer) development environ-
ment for advanced application code development and debug, with features that enable the ability to:
•Create, compile, assemble, and link application programs written in C++, C, and assembly
•Load, run, step, halt, and set breakpoints in application programs
•Read and write data and program memory
•Read and write core and peripheral registers
Purpose of This Manual
This manual provides instructions for installing the product hardware (board). This manual describes operation and
configuration of the board components and provides guidelines for running code on the board.
Manual Contents
The manual consists of:
•Using the board
Preface
EV-21569-SOM ® Manual 1–1

Provides basic board information.
•Hardware Reference
Provides information about the hardware aspects of the board.
•Bill of Materials
A companion file in PDF format that lists all of the components used on the board is available on the website
at http://www.analog.com/EV-21569-SOM .
•Schematic
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/EV-21569-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®:
http://ez.analog.com/community/dsp
•Submit your questions to technical support directly at:
http://www.analog.com/support
•E-mail your questions about processors, DSPs, and tools development software from CrossCore Embedded Stu-
dio or VisualDSP++®:
If using CrossCore Embedded Studio or VisualDSP++ choose Help > Email Support. This creates an e-mail to
processor[email protected] and automatically attaches your CrossCore Embedded Studio or Visu-
alDSP++ version information and license.dat file.
•E-mail your questions about processors and processor applications to:
processor[email protected]
processor[email protected]
•Contact your Analog Devices sales office or authorized distributor. Locate one at:
http://www.analog.com/adi-sales
Supported Integrated Circuit
This evaluation system supports the Analog Devices ADSP-21569 IC.
Technical Support
1–2 EV-21569-SOM ® Manual

Supported Tools
Information about code development tools for the EV-21569-SOM evaluation board and ADSP-2156x product
family is available at:
http://www.analog.com/EV-21569-SOM
Product Information
Product information can be obtained from the Analog Devices website and the online help system.
Analog Devices Website
The Analog Devices website, http://www.analog.com, provides information about a broad range of products - ana-
log integrated circuits, amplifiers, converters, transceivers, and digital signal processors.
To access a complete technical library for each processor family, go to http://www.analog.com/processors/techni-
cal_library. The manuals selection opens a list of current manuals related to the product as well as a link to the
previous revisions of the manuals. When locating your manual title, note a possible errata check mark next to the
title that leads to the current correction report against the manual.
Also note, MyAnalog.com is a free feature of the Analog Devices website that allows customization of a web page to
display only the latest information about products you are interested in. You can choose to receive weekly e-mail
notifications containing updates to the web pages that meet your interests, including documentation errata against
all manuals. MyAnalog.com provides access to books, application notes, data sheets, code examples, and more.
Visit MyAnalog.com to sign up. 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.
Use EngineerZone to connect with other DSP developers who face similar design challenges. You can also use this
open forum to share knowledge and collaborate with the ADI support team and your peers. Visit http://
ez.analog.com to sign up.
Supported Tools
EV-21569-SOM ® Manual 1–3

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 EV-21569-SOM board.
Figure 2-1: Board View
Using the Board
EV-21569-SOM ® Manual 2–1

The board features:
•Analog Devices ADSP-21569 processor
•400 ball BGA
•25 MHz oscillator
•DDR3 Memory
•512Mx16 bit (8Gbit )
•ISSI IS43TR16512BL-125KBL
•1.35V
•SPI Flash Quad (SPI2) Memory
•512Mbit
•ISSI IS25LP512M - 512M-bit Serial Flash Memory with Dual and Quad SPI
•Single/Dual/Quad SPI
•Debug Interface (JTAG)
•JTAG 10-pin 0.05” header
•LEDs
•8 LEDs: one power (green), one board reset (red), three general-purpose (amber), one fault (red), and two
UART LEDs (amber)
•Pushbuttons
•One pushbutton, RESET
•SoM Interface Connector
•DAI
•SPORT
•SPI
•UART
•TWI
•Link Port
•GPIO
•MLB
•RESET
Product Overview
2–2 EV-21569-SOM ® Manual

•GND/3.3V/5V/12V output
Package Contents
Your EV-21569-SOM package contains the following items.
•EV-21569-SOM board
Contact the vendor where you purchased your EV-21569-SOM evaluation board or contact Analog Devices, Inc. if
any item is missing.
Default Configuration
The EV-21569-SOM board is designed to run as a standalone unit.
The Default Hardware Setup figure shows the default settings for jumpers and switches and the location of the
jumpers, switches, connectors, and LEDs. Confirm that your board is in the default configuration before using the
board.
Package Contents
EV-21569-SOM ® Manual 2–3

Boot Mode Select
SW1
SW2
Reset Button
JP1
Power
Selection )
Figure 2-2: Default Hardware Setup
CrossCore Embedded Studio (CCES) Setup
Information on using the CCES tools is available at: https://analog.com/cces-quickstart
CrossCore Embedded Studio (CCES) Setup
2–4 EV-21569-SOM ® Manual

Debug Interface
The EV-21569-SOM provides a JTAG connection via P1 . This is for attaching an emulator, such as the ICE-1000
or ICE-2000 to for debugging.
When the EV-21569-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 emulator, such as
the ICE-1000 or ICE-2000, is used instead all postions on SW1 must be in the OFF position.
Board Power
The EV-21569-SOM powered via P2 when the board is in standalone mode. When in this mode the jumper on
JP1 should be on Pins 1-2 to select power input from P2 . When the EV-21569-SOM is connected to a carrier
board the power is supplied via the carrier board. When in this mode the jumper on JP1 should be on Pins 2-3 to
select power input from the carrier board.
Power-On-Self Test
The Power-On-Self-Test Program (POST) tests all the EZ-KIT carrier board peripherals and validates functionality
as well as connectivity to the processor. Once assembled, each EZ-KIT carrier board is fully tested for an extended
period of time with POST for all the compatible SoM modules. All EZ-KIT carrier boards are shipped with POST
preloaded into flash memory. The POST is executed by resetting the board and connecting the USB To UART to
your PC with an open terminal window. The POST also can be used as a reference for a custom software design or
hardware troubleshooting.
Note that the source code for the POST program is included in the Board Support Package (BSP) along with the
readme file that describes how the board is configured to run POST.
Example Programs
Example programs are provided with the EV-21569-SOM Board Support Package (BSP) to demonstrate various ca-
pabilities of the product. The programs can be found in the EV-21569-SOM\examples installation folder. Re-
fer 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.
The information can be found at:
http://www.analog.com/EV-21569-SOM
Debug Interface
EV-21569-SOM ® Manual 2–5

FT232R - USB to UART
The FT232R is a USB-to-serial-UART interface with the following advanced features:
•Single chip USB to asynchronous serial data transfer interface
•Entire USB protocol handled on the chip. No USB specific firmware programming required
•Fully-integrated 1024 bit EEPROM storing device descriptors and CBUS I/O configuration
•Fully-integrated USB termination resistors
•Fully-integrated clock generation with no external crystal required, plus optional clock output selection ena-
bling a glueless interface to an external MCU or FPGA
•Data transfer rates from 300 baud to 3 Mbaud (RS422, RS485, RS232) at TTL levels
•128 byte receive buffer and 256 byte transmit buffer utilizing buffer smoothing technology to allow for high-
data throughput
•FTDI’s royalty-free Virtual Com Port (VCP) and Direct (D2XX) drivers eliminate the requirement for USB
driver development in most cases.
•Transmit and receive LED drive signals
•UART interface support for 7 or 8 data bits, 1 or 2 stop bits, and odd/even/mark/space/no parity
•FIFO receives and transmits buffers for high-data throughput
•Device supplied pre-programmed with unique USB serial number
•Supports bus-powered, self-powered and high-power bus-powered USB configurations
•Integrated +3.3V level converter for USB I/O
•Integrated level converter on UART and CBUS for interfacing to between +1.8V and +5V logic
•True 5V/3.3V/2.8V/1.8V CMOS drive output and TTL input
•Configurable I/O pin output drive strength
•Integrated power-on-reset circuit
•Fully-integrated AVCC supply filtering - no external filtering required.
•UART signal inversion option
•+3.3V (using external oscillator) to +5.25V (internal oscillator) single supply operation
•Low-operating and USB suspend current
•Low USB bandwidth consumption
•UHCI/OHCI/EHCI host controller compatible
•USB 2.0 full speed compatible
FT232R - USB to UART
2–6 EV-21569-SOM ® Manual

IS25LP512M - 512M-bit Serial Flash Memory with Dual and
Quad SPI
The IS25LP512M Serial Flash memory offers a versatile storage solution with high flexibility and performance in a
simplified pin count package. ISSI’s “Industry Standard Serial Interface” Flash is for systems that require limited
space, a low pin count, and low power consumption. The device is accessed through a 4-wire SPI Interface consist-
ing of a Serial Data Input (SI), Serial Data Output (SO), Serial Clock (SCK), and Chip Enable (CE#) pins, which
can also be configured to serve as multi-I/O (see pin descriptions).
The device supports Dual and Quad I/O, as well as standard, Dual Output, and Quad Output SPI. Clock frequen-
cies of up to 133MHz allow for equivalent clock rates of up to 532MHz (133MHz x 4) which equates to
66.5Mbytes of data throughput. The IS25xE series of Flash adds support for DTR (Double Transfer Rate) com-
mands that transfer addresses and read data on both edges of the clock.These transfer rates can outperform 16-bit
Parallel Flash memories, allowing for efficient memory access to support XIP (eXecute In Place) operation.
The memory array is organized into programmable pages of 256/512 bytes. This family supports page program
mode where 1 to 256/512 bytes of data are programmed in a single command.
QPI (Quad Peripheral Interface) supports 2-cycle instructions, further reducing instruction times. Pages can be
erased in groups of 4Kbyte sectors, 32Kbyte blocks, 64K/256Kbyte blocks, and/or the entire chip. The uniform sec-
tor and block architecture allows for a high degree of flexibility so that the device can be utilized for a broad variety
of applications requiring solid data retention.
IS43TR16512BL - 1Gx8, 512Mx16 8Gb DDR3 SDRAM
•Low Voltage (L): VDD and VDDQ = 1.35V + 0.1V, -0.067V - Backward compatible to 1.5V
•High speed data transfer rates with system frequency up to 933 MHz
•8 internal banks for concurrent operation
•8n-Bit pre-fetch architecture
•Programmable CAS Latency
•Programmable Additive Latency: 0, CL-1,CL-2
•Programmable CAS WRITE latency (CWL) based on tCK
•Programmable Burst Length: 4 and 8
•Programmable Burst Sequence: Sequential or Interleave
•BL switch on the fly
•Auto Self Refresh(ASR)
•Self Refresh Temperature(SRT)
IS25LP512M - 512M-bit Serial Flash Memory with Dual and Quad SPI
EV-21569-SOM ® Manual 2–7

•Refresh Interval: 7.8 µs (8192 cycles/64 ms) Tc= -40°C to 85°C 3.9 µs (8192 cycles/32 ms) Tc= 85°C to 95°C
1.95 µs (8192 cycles/16 ms) Tc= 95°C to 105°C 0.97 µs (8192 cycles/8 ms) Tc= 105°C to 115°C
•Partial Array Self Refresh
•Asynchronous RESET pin
•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
IS43TR16512BL - 1Gx8, 512Mx16 8Gb DDR3 SDRAM
2–8 EV-21569-SOM ® Manual

3 Hardware Reference
This chapter describes the hardware design of the EV-21569-SOM board.
System Architecture
The Block Diagram figure shows the board configuration.
Figure 3-1: Block Diagram
The EV-21569-SOM board is designed to demonstrate the ADSP-21569 processor’s capabilities. The board has a 25
MHz input clock and runs at a max core clock frequency of 1GHz.
User I/O to the processor is provided in the form of two pushbuttons and three LEDs.
The software-controlled switches (SoftConfig) facilitate the switch multi-functionality by disconnecting the push-
buttons from their associated processor pins and reusing the pins elsewhere on the board.
Software-Controlled Switches (SoftConfig)
On the board, most of the functionality traditionally controlled by mechanical switches and jumpers is controlled by
I2C software-controlled switches. The mechanical switches that remain are provided for the boot mode and push
buttons. Reference any SoftConfig*.c file found in the installation directory for an example of how to set up
the SoftConfig feature of the board through software. The SoftConfig section of this manual serves as a reference to
any user that intends to modify an existing software example. If software provided by ADI is used, there should be
little need to reference this section.
NOTE: Be careful when changing SoftConfig settings. When connecting extender cards, configure the settings to
avoid conflict among interfaces so multiple signals are not driven on the same pins.
Overview of SoftConfig
In order to further clarify the use of electronic single FET switches and multi-channel bus switches, an example of
each is illustrated and compared to a traditional mechanical switching solution. This is a generic example that uses
similar FET and bus switch components that are on the board.
Hardware Reference
EV-21569-SOM ® Manual 3–1

After this generic discussion, there is a detailed explanation of the SoftConfig interface specific to the EV-21569-
SOM carrier board.
The Example of Individual FET Switches figure shows two individual FET switches (Pericom PI3A125CEX) with
reference designators UA and UB. Net names ENABLE_A and ENABLE_B control UA and UB. The default FET
switch enable settings in this example are controlled by resistors RA and RB, which pull the enable pin 1 of UA and
UB to ground (low), respectively. In a real example, these enable signals are controlled by the Microchip I/O expand-
er. The default pull-down resistors connect the signals EXAMPLE_SIGNAL_A and EXAMPLE_SIGNAL_B and
also connect signals EXAMPLE_SIGNAL_C and EXAMPLE_SIGNAL_D. To disconnect EXAMPLE_SIGNAL_A
from EXAMPLE_SIGNAL_B, the Microchip I/O expander is used to change ENABLE_A to a logic 1 through soft-
ware that interfaces with the Microchip I/O expander. The same procedure for ENABLE_B disconnects
EXAMPLE_SIGNAL_C from EXAMPLE_SIGNAL_D.
Figure 3-2: Example of Individual FET Switches
The following figure shows the equivalent circuit to the Example of Individual FET Switches figure but utilizes me-
chanical switches that are in the same package. The default is shown by black boxes located closer to the ON label of
the switches. In order to disconnect these switches, physically move the switch to the OFF position.
Figure 3-3: Example of a Mechanical Switch (Equivalent to Example of Individual FET Switches Figure)
Software-Controlled Switches (SoftConfig)
3–2 EV-21569-SOM ® Manual

The Example of Bus Switch figure shows a bus switch example, reference designator UC (Pericom
PI3LVD512ZHE), selecting between lettered functionality and numbered functionality. The signals on the left side
are multiplexed signals with naming convention letter_number. The right side of the circuit shows the signals sepa-
rated into letter and number, with the number on the lower group (0B1) and the letter on the upper group (0B2).
The default setting is controlled by the signal CONTROL_LETTER_NUMBER which is pulled low. This selects the
number signals on the right to be connected to the multiplexed signals on the left by default. In this example, the
Microchip I/O expander is not shown but controls the signal CONTROL_LETTER_NUMBER and allows the user to
change the selection through software.
Software-Controlled Switches (SoftConfig)
EV-21569-SOM ® Manual 3–3

Figure 3-4: Example of a Bus Switch
The following figure shows the equivalent circuit to the Example of Bus Switch figure but utilizes mechanical
switches. The default for reference designators SWC and SWD is illustrated by black boxes located closer to the ON
label of the switches to enable the number signals by default. Also, note the default setting for reference designators
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.
Software-Controlled Switches (SoftConfig)
3–4 EV-21569-SOM ® Manual

Figure 3-5: Example of a Mechanical Switch (Equivalent to Example of Bus Switch)
SoftConfig on the Board
Two Microchip MCP23017 GPIO expanders provide control for individual electronic switches. The TWI2 inter-
face of the processor communicates with the Microchip devices. There are individual switches with default settings
that enable basic board functionality.
The Default Processor Interface Availability table lists the processor and board interfaces that are available by de-
fault. Note that only interfaces affected by software switches are listed in the table.
Table 3-1: Default Processor Interface Availability
Interface Availability by Default
UART0 USB to UART FTDI232RQ
SPI Flash Quad mode enabled
LEDs Enabled
Programming SoftConfig Switches
On the board, two Microchip MCP23017 devices exist. Each of these devices has the following programming char-
acteristics:
•Each GPIO register controls eight signals (software switches).
GPIO Register Register Address
GPIOA 0x12
Software-Controlled Switches (SoftConfig)
EV-21569-SOM ® Manual 3–5