Epiq solutions Matchstiq z3u Instructions for use

Matchstiq™ Z3u

RF Transceiver • Platform

HARDWARE USER MANUAL

V1.6 - OCTOBER 13, 2022

Matchstiq™ Z3u | Hardware User Manual

CHANGELOG

Revision Date Description Author

0.0.1 2020-05-07 Pre-release draft, initial version Meaghan Z

0.0.2 2020-09-03 Additional details added Meaghan Z

0.0.3 2020-09-28 Additional details, format conversion Barry L

1.0 2020-10-01 v1.0 release Barry L

1.1 2021-03-16 v1.1 release Barry L

1.2 2021-07-09 Added GPSDO and power consumption info, format cleanup. Barry L

1.3 2022-01-10 Added USB host mode info. Barry L

1.4 2022-03-03 Added info on how to change network settings Barry L

1.5 2022-05-25 Updated microSD capacity (1TB), external reference clock to squarewave only,

and component temperature rating -40C Barry L

1.6 2022-10-13 Updated serial# info, Rev.B and C/D debug connector pin orientation, power

consumption and thermal info, Z3u block diagram Barry L

Matchstiq™ Z3u | Hardware User Manual

DISCLAIMER

Epiq Solutions is disclosing this document (“Documentation”) as a general guideline for development. Epiq

Solutions expressly disclaims any liability arising out of your use of the Documentation. Epiq Solutions

reserves the right, at its sole discretion, to change the Documentation without notice at any time. Epiq

Solutions assumes no obligation to correct any errors contained in the Documentation, or to advise you of any

corrections or updates. Epiq Solutions expressly disclaims any liability in connection with technical support or

assistance that may be provided to you in connection with the Information. THE DOCUMENTATION IS

DISCLOSED TO YOU “AS IS” WITH NO WARRANTY OF ANY KIND. EPIQ SOLUTIONS MAKES NO

OTHER WARRANTIES, WHETHER EXPRESSED, IMPLIED, OR STATUTORY, REGARDING THE

DOCUMENTATION, INCLUDING ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A

PARTICULAR PURPOSE, OR NON-INFRINGEMENT OF THIRD PARTY RIGHTS. IN NO EVENT WILL

EPIQ SOLUTIONS BE LIABLE FOR ANY CONSEQUENTIAL, INDIRECT, EXEMPLARY, SPECIAL, OR

INCIDENTAL DAMAGES, INCLUDING ANY LOSS OF DATA OR LOST PROFITS, ARISING FROM YOUR

USE OF THE DOCUMENTATION.

Matchstiq™ Z3u | Hardware User Manual

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TABLE OF CONTENTS

Introduction

Legal Considerations

Proper Care and Handling

References

Terms and Definitions

System Overview

Hardware Specification

RF Receiver Specification

RF Transmitter Specification

Clock / Synchronization Specification

Digital Specification

Hardware Interfaces

Rx (J1)

GPS

TRx (J2)

GPS Fix LED

Push Button Input

Status LED

External Reference Clock Input (REF)

PPS Input/Output (PPS)

USB Micro-B Serial Console

USB-C Interface

microSD Slot

DC Barrel Jack Input (7-17VDC)

Temperature & Inertial Measurement Unit (IMU) Sensors

IMU Sensor (ICM-20602) Axis Orientation

GPS

Reference Clock Options

GPS Disciplined Oscillator (GPSDO)

GPSDO Performance

GPS / UART functionality

GPS sysfs

Linux sysfs GPS Control Examples

GPS UART

Matchstiq Z3u Setup

Interfacing To Matchstiq Z3u Over USB

Default Login

Matchstiq™ Z3u | Hardware User Manual

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User Image

Recovery Image

Changing the Default IP address

USB Network Configuration

USB Host Mode

Non-persistent USB host mode

Persistent USB host mode

Matchstiq Z3u Basic Usage

Included Applications

Libsidekiq Test Applications

Raw I/Q Capture

Interfacing To Matchstiq Z3u Over Serial Console

Linux Board Support Package Options for Matchstiq Z3u

Overview

BSP Build Process

FPGA Resource Availability

FPGA Feature Set and Customization

Matchstiq Z3u Platform Development Kit

Overview

Debug Header (J1)

GPIO Header (J2)

Fan Header (J3)

PL GPIO_TEST

PL GPIO_TEST2

PS_MODE0

USB Micro-B Connector (J4)

JTAG Header (J5)

Matchstiq Z3u PDK Status LEDs

Powering Up Platform Development Kit

Linux Console Serial Port

Controlling GPIO

Linux sysfs GPIO Control Example

GPIOD Example

Viewing all GPIO

Controlling GPIO

Default Memory Partition and Filesystem Configuration

Using Petalinux to Update uBoot and Linux Kernel

Building

Updating

Additional Packages

Matchstiq Z3u Recovery

Using microSD for Default Kernel / Device Tree / FPGA

Matchstiq™ Z3u | Hardware User Manual

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Power Consumption

Matchstiq Z3u Mounting and Cabling to Tablet

Matchstiq Z3u Mechanical Outline

Matchstiq Z3u Thermal

Appendix A – Matchstiq Z3u RF Front End

Matchstiq™ Z3u | Hardware User Manual Introduction

Epiq Solutions Proprietary Page 7

This document provides an overview of Epiq Solutions' Matchstiq Z3u software defined radio (SDR)

[1], a highly integrated wideband RF transceiver plus Linux computer. The following topics will be

discussed:

Overview of the Matchstiq Z3u hardware and available interfaces

Matchstiq Z3u usage/integration options

Matchstiq Z3u Platform Development Kit usage

INTRODUCTION

Matchstiq™ Z3u | Hardware User Manual Legal Considerations

Epiq Solutions Proprietary Page 8

Matchstiq Z3u is distributed all over the world. Each country has its own laws governing reception

and transmission of radio frequencies. The user of Matchstiq Z3u and associated software is solely

responsible for insuring that it is used in a manner consistent with the laws of the jurisdiction in

which it is used. Many countries, including the United States, prohibit the transmission and reception

of certain frequency bands, or receiving certain transmissions without proper authorization. Again,

the user is solely responsible for the user's own actions.

LEGAL CONSIDERATIONS

Matchstiq™ Z3u | Hardware User Manual Proper Care and Handling

Epiq Solutions Proprietary Page 9

Each Matchstiq Z3u unit is fully tested by Epiq Solutions before shipment, and is guaranteed

functional at the time it is received by the customer, and ONLY AT THAT TIME. Improper use can

cause it to become non-functional. In particular, a list of actions that may cause damage to the

hardware include the following:

Handling the unit without proper static precautions (ESD protection) when the housing is

removed or opened up

Improper shutdown of the Matchstiq Z3u

Connecting a transmitter to the RX port without proper attenuation

Executing custom software and/or an FPGA bitstream that was not developed according to

guidelines

The above list is not comprehensive, and experience with the appropriate measures for handling

electronic devices is required.

PROPER CARE AND HANDLING

Matchstiq™ Z3u | Hardware User Manual References

Epiq Solutions Proprietary Page 10

1. Matchstiq Z3u Product Page

https://epiqsolutions.com/rf-transceiver/matchstiq-z/

2. Epiq Solutions Support Portal

https://support.epiqsolutions.com

3. Sysfs Interface for Userspace

https://www.kernel.org/doc/Documentation/gpio/sysfs.txt

4. Zynq UltraScale+ Device Technical Reference Manual

https://www.xilinx.com/support/documentation/user_guides/ug1085-zynq-ultrascale-trm.pdf

5. Petalinux Tools for Embedded Systems

https://www.xilinx.com/support/documentation-navigation/design-hubs/dh0016-petalinux-tools-

hub.html

6. Xilinx’s Wiki “How to Format SD card for SD boot”

https://xilinx-

wiki.atlassian.net/wiki/spaces/A/pages/18842385/How+to+format+SD+card+for+SD+boot

REFERENCES

Matchstiq™ Z3u | Hardware User Manual Terms and Definitions

Epiq Solutions Proprietary Page 11

Term Definition

A/D Analog to Digital converter

BSP Board Support Package

D/A Digital to Analog converter

dB Decibel

dBm Decibels referenced to one milliwatt (mW)

dpkg Debian Package

eMMC Embedded Multi-Media Controller

ESD ElectroStatic Discharge

FPGA Field Programmable Gate Array

GALILEO/BEIDOU European Union's Galileo and China's BeiDou Navigation Satellite Systems

GHz gigahertz

GLONASS GLObal NAvigation Satellite System

GPIO General Purpose Input / Output

GPS Global Positioning System

GPSDO Global Positioning System Disciplined Oscillator

IF Intermediate Frequency

IMU Inertial Measurement Unit

I/Q In-Phase / Quadrature Phase

JTAG Joint Test Action Group

ksps kilo samples per second

LED Light Emitting Diode

MHz megahertz

MMCX Micro-Miniature CoXial RF connector

Msps Mega samples per second

OTG On The Go, a variant of the USB protocol supporting both host and device operation

PDK Platform Development Kit

PL Programmable Logic

PPM Parts Per Million

TERMS AND DEFINITIONS

Matchstiq™ Z3u | Hardware User Manual Terms and Definitions

Epiq Solutions Proprietary Page 12

PPS Pulse Per Second

PS Processing System

QSPI Quad serial peripheral interface

QZSS Quasi-Zenith Satellite System

RAM Random Access Memory

RF Radio Frequency

Rx Receive

SBAS Satellite-based Augmentation System

SDK Software Development Kit

SDR Software Defined Radio

SMA SubMinature version A RF connector

SSH Secure SHell

TCVCXO Temperature Compensated Voltage Controlled Crystal Oscillator

Tx Transmit

UART Universal Asynchronous Receiver Transmitter

USB Universal Serial Bus

Table 1: Terms and Definitions

Matchstiq™ Z3u | Hardware User Manual System Overview

Epiq Solutions Proprietary Page 13

Matchstiq Z3u is a small form factor software defined radio system that provides a wideband RF

transceiver plus a Linux computer. With the integrated Linux computer, Matchstiq Z3u is targeted for

applications where the necessary signal/protocol processing tasks can execute standalone, without

the necessity of a host computer platform. Alternately, Matchstiq Z3u can be interfaced with a host

system (PC running Linux / Windows / MacOS or Android device), where supplemental processing

and control of the Matchstiq Z3u could take place on the host system. Whether running in a

standalone configuration or with a host device, all configuration and streaming of the Matchstiq Z3u

is completed within the libsidekiq software API.

A high level summary of Matchstiq Z3u features is shown below:

Leverages Analog Devices' AD9361 to provide a RF transceiver covering 70 MHz to 6 GHz,

with independent Tx and Rx frequencies

Dual Rx mode supported

Integrated Rx pre-select filters

Configurable A/D and D/A sample rates up to 61.44 Msamples/sec

Integrated Linux computer provided via Xilinx Zynq UltraScale+ XCZU3EG System-on-Chip

2 GB of LPDDR4 RAM

Integrated GPS receiver with PPS for high accuracy

On-board 40 MHz TCVCXO with +/- 0.1PPM accuracy; support for optional external 10 MHz or

40 MHz reference clock input, software controlled

128 MB of QSPI flash storage for uboot bootloader and Linux kernel

128 GB eMMC for root filesystem storage

microSD slot for additional storage or alternative boot options

USB 3.0 network interface

USB 2.0 OTG interface

USB Micro-B serial console

Zynq UltraScale+ PS/PL GPIO available

Size: 2.64" x 3.63" x 0.81" (67.1mm x 92.3mm x 20.1mm) including SMA connectors

Weight: 5.6 oz. (6.7 oz. with the optional mounting plate)

Typical power consumption: under 6 W

SYSTEM OVERVIEW

Matchstiq™ Z3u | Hardware User Manual System Overview

Epiq Solutions Proprietary Page 14

A block diagram of Matchstiq Z3u is shown below:

Figure 1: Block diagram of the Matchstiq Z3u

Matchstiq™ Z3u | Hardware User Manual Hardware Specification

Epiq Solutions Proprietary Page 15

RF Inputs SMA connector (50 ohms); total of two SMA connectors that can be used to switch between

three external antennas (can be used as dual RX or dual-use Tx or Rx port);

Architecture Zero-IF (direct conversion)

Tuning Range 70 MHz to 6 GHz

Rx Pre-Select Filter

Bank

Sub-octave pre-select filtering for interference protection from ~50 MHz to 6 GHz;

Automatically selected when tuning the RF receiver.

Tuning Step Size ~2.4 Hz

Tuning Time ~1 ms

Typical Noise Figure 8 dB

Typical IIP3 -18 dBm

Max RF Input Power

Level (without damage) +20 dBm

Gain Control Range 0 to 76 dB, 1 dB steps

Gain Control Mode Manual or Automatic

A/D Converter Sample

Rate 233 Ksps to 61.44 Msps

A/D Converter Sample

Width 12 bits

Typical I/Q balance > 50 dB

Table 2: RF Receiver Spec

HARDWARE SPECIFICATION

RF RECEIVER SPECIFICATION

Matchstiq™ Z3u | Hardware User Manual Hardware Specification

Epiq Solutions Proprietary Page 16

RF Input SMA connector (50 ohms); dual-use connector supports operation as Tx or Rx port

Architecture Zero-IF (direct conversion)

Tuning Range 70 MHz to 6 GHz

Tuning Step Size ~2.4 Hz

Tuning Time ~1 ms

Gain Control Range 0 to 89.75 dB, 0.25 dB steps

RF Output Power (P1dB) +13 dBm < 2 GHz, +10 dBm above 2 GHz

D/A Converter Sample Rate 233 ksps to 61.44 Msps

D/A Converter Sample Width 12 bits

Typical I/Q balance > 60 dB

Table 3: RF Transmitter Spec

RF Input Port MMCX

On Board Reference Clock 40 MHz, +/- 0.1 PPM accuracy P/N: SiTime SIT5356

External Reference Clock Input Frequency 10 MHz or 40 MHz

External Reference Clock Input Power Range 0.8 – 3.0 Vpp, +7 dBm max from 50 ohm source for 10 MHz

0.8 – 1.3 Vpp, 0 dBm max from 50 ohm source for 40 MHz

PPS Input Level 3.3V max

GPSDO Refer to GPSDO Performance section

Table 4: Clock Spec

RF TRANSMITTER SPECIFICATION

CLOCK / SYNCHRONIZATION SPECIFICATION

Matchstiq™ Z3u | Hardware User Manual Hardware Specification

Epiq Solutions Proprietary Page 17

System on

Chip

Xilinx Zynq UltraScale+ XCZU3EG Programmable Logic (PL) Specification:-154K Logic Cells-7.6

Mbits BlockRAM-360 DSP slicesProcessor System (PS) Specification:-Quad-core ARM Cortex A9

CPU running up to 1.5 GHz-Linux kernel 4.14, Ubuntu 18.04

RAM 2GB LPDDR4 RAM

Flash 128 MB QSPI

eMMC 128 GB

User

Accessible

microSD Slot

up to 1 TB

User I/O USB 3.0 superspeed via USB-C connection, Linux serial console via USB Micro-B connection, Status

LED, GPS Fix LED, and Push Button Switch

Debug I/O

RevB GPIO: Two PL (FPGA controlled) general purpose input/output pins, One PS (CPU controlled)

general purpose input pins (can also be used to control boot mode), JTAG interface

RevC GPIO: Four PL (FPGA controlled) general purpose input/output pins, Three PS (CPU controlled)

general purpose input pins (can also be used to control boot mode), JTAG interface

GPS / GPSDO

OriginGPS ORG4033-MK05

NMEA sentences, PPS, and frequency-disciplining

GPSDO feature available in libsidekiq v4.16.1 / FPGA v3.14.1 release or later

Temperature

Sensor

Texas Instruments TMP103AYFFR

Accuracy: -40 ºC to +125 ºC (+/- 1 ºC typ)

Resolution: 1 ºC

Inertial

Measurement

Unit (IMU)

Sensor

TDK / InvenSense ICM-20602

6-axis MotionTracking Device (3-axis gyroscope, 3-axis accelerometer)

- Gyroscope sensitivity error: ±1%

- Gyroscope noise: ±4 mdps/√Hz

- Accelerometer noise: 100 μg/√Hz

Component

Temperature

Rating

-40 ºC to + 85 ºC

Table 5: Digital Spec

DIGITAL SPECIFICATION

Matchstiq™ Z3u | Hardware User Manual Hardware Interfaces

Epiq Solutions Proprietary Page 18

Matchstiq Z3u provides a variety of different hardware interfaces for use by an end user. Each of

these hardware interfaces is shown and defined below.

Figure 2: Matchstiq Z3u front I/O ports

The Rx interface is a 50 ohm SMA jack connector that provides an RF input path that can be

switched in to the RF receiver in the Matchstiq Z3u, allowing a user-specified antenna to interface to

the RF receiver. This Rx port supports RF input frequencies between 50 MHz and 6 GHz. The

maximum safe RF input level to this port without damage is +20 dBm.

The GPS interface is a 50 ohm SMA jack connector that provides an antenna input path for the GPS

receiver. Both passive and active GPS antennas can be used. The maximum safe RF input level to

this port without damage is +10 dBm.

HARDWARE INTERFACES

RX (J1)

GPS

TRX (J2)

Matchstiq™ Z3u | Hardware User Manual Hardware Interfaces

Epiq Solutions Proprietary Page 19

The TRx interface is a SMA connector that provides an RF access path that can be used for either

Rx or Tx. When operating in Dual Rx mode, this provides an RF access path to the second Rx path

of the Matchstiq Z3u, such that Rx (J1) and TRx (J2) are both used as receivers tuned to the same

LO. When operating in single channel TDD mode, TRx (J2) can be switched between receive and

transmit. When operating in single channel FDD mode, TRx (J2) provides an RF access path to the

transmitter. The maximum safe RF input level to this port without damage is +20 dBm.

The selection of either transmit or receive mode for this RF port can be controlled via the libsidekiq

software library.

Handle RF Port [Single Channel Fixed-

Mode]

RF Port [Dual Channel RX-

Mode]

RF Port [Single Channel TRX-

Mode]

skiq_rx_hdl_A1 skiq_rf_port_J1 skiq_rf_port_J1 skiq_rf_port_J2

skiq_rx_hdl_A2 skiq_rf_port_J2

skiq_tx_hdl_A1 skiq_rf_port_J2 skiq_rf_port_J2

Table 6: RF Port Mapping

The GPS Fix LED provides a visual status indicator that can be controlled via the FPGA. This LED is

connected to a PL pin (IO_L3N_T0L_N5_AD15N_65) on the Zynq UltraScale+. By default, the LED

is used to provide an indication if the GPS receiver has a fix.

Figure 3: Matchstiq Z3u rear I/O ports

GPS FIX LED

Matchstiq™ Z3u | Hardware User Manual Hardware Interfaces

Epiq Solutions Proprietary Page 20

The push button input is connected to the PS and is configured as a gpio-keys-polled device with the

name of “ext_pb”. It is connected to a PS pin (PS_MIO70) on the Zynq UltraScale+. By default, the

push button does not do anything, though monitoring /dev/input/event0 for the key up event (103)

will indicate when the push button event is detected. Example: $ evtest /dev/input/event0

The Status LED #1 provides a visual status indicator that can be controlled through software. This

LED is connected to a PS pin (PS_MIO_9) on the Zynq UltraScale+.

For Z3u Rev-B hardware, this LED is used to provide a heartbeat indicator after the system has

booted Linux and is running, blinking at a rate of ~2 Hz. For Z3u Rev-C hardware, please refer to the

table below.

Note, when the recovery image is booted, the Status LED blinks twice and then remains on for a

longer period (inverted heartbeat).

LED Status Description

Green Power is applied

Green and blue OS is booting up

Green and flashing blue (heartbeat) OS boot complete, software is running

Table 7: Z3u Rev-C Status LED

The External Reference Clock Input interface (software selectable) is a 50 Ohm MMCX jack

connector that accepts an external 10 MHz or 40 MHz reference clock signal (software selectable)

for the purpose of phase locking the on-board 40 MHz TCVCXO reference clock. This provides the

facility to have multiple Matchstiqs share a common external 10 or 40 MHz reference clock. The use

of this interface is optional and not required.

Coupling AC

Frequency 10 or 40 MHz

Input level 0.8 – 1.3 Vpp, 0 dBm max. from 50 ohm source for 40 MHz

0.8 – 3.0 Vpp, +6 dBm max. from 50 ohm source for 10 MHz.

PUSH BUTTON INPUT

STATUS LED

EXTERNAL REFERENCE CLOCK INPUT (REF)

Epiq Solutions Matchstiq Z3u Instructions for use

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