Diamond Systems ZETA User manual

www.diamondsystems.com Zeta User Manual Rev 1.0
ZETA
COM-based SBC based on
Type 10 nano COM Modules
Revision
Date
Comment
1.0
9/6/2018
Initial release from v0.7
Copyright 2018
FOR TECHNICAL SUPPORT Diamond Systems Corporation
PLEASE CONTACT: www.diamondsystems.com
[e-mail]

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 2
CONTENTS
1Important Safe Handling Information......................................................................................................5
2Introduction ...........................................................................................................................................6
2.1 Available Models ...........................................................................................................................................6
2.2 Description .....................................................................................................Error! Bookmark not defined.
2.3 Features..........................................................................................................Error! Bookmark not defined.
2.4 Selection of Modules......................................................................................Error! Bookmark not defined.
2.5 Mechanical, Electrical, Environmental ..........................................................................................................8
2.6 Operating System Support ............................................................................................................................8
2.7 Customization Options ...................................................................................Error! Bookmark not defined.
2.8 Feature support limitations of Zeta Board with ARBOR and DFI COM modules: ........ Error! Bookmark not
defined.
3Functional Overview.....................................................................................Error! Bookmark not defined.
3.1 Functional Block Diagram...............................................................................Error! Bookmark not defined.
3.2 Feature Description.......................................................................................................................................9
3.2.1 Processor Modules ................................................................................Error! Bookmark not defined.
3.2.2 Power Supply ..................................................................................................................................... 10
3.2.3 Ethernet ............................................................................................................................................. 10
3.2.4 Micro SD............................................................................................................................................. 10
3.2.5 USB..................................................................................................................................................... 10
3.2.6 Video......................................................................................................Error! Bookmark not defined.
3.2.7 Audio.................................................................................................................................................. 10
3.2.8 Serial Ports......................................................................................................................................... 10
3.2.9 Backup Battery................................................................................................................................... 10
3.2.10 mSATA/PCIe Mini-card Socket........................................................................................................... 11
3.2.11 PCIe Link Routing ............................................................................................................................... 11
3.2.12 Data Acquisition................................................................................................................................. 11
3.2.13 GPIOs ................................................................................................................................................. 11
3.2.14 LED Indicators .................................................................................................................................... 11
3.2.15 Expansion Connector......................................................................................................................... 11
3.3 Mechanical Board Drawing of Zeta board......................................................Error! Bookmark not defined.
3.4 Connector and jumper Locations ...................................................................Error! Bookmark not defined.
4Getting started .....................................................................................................................................15
4.1 Development Kit......................................................................................................................................... 15
4.2 Development Kit Contents ......................................................................................................................... 15
4.3 System Setup.............................................................................................................................................. 15
4.4 Boot Device Options................................................................................................................................... 15
4.5 Installing OS and Booting ........................................................................................................................... 16
5Connector Pinout and Pin Description ...................................................................................................17
5.1 Power Input (J9) ......................................................................................................................................... 17
5.2 RTC Battery input (J6)................................................................................................................................. 17
5.3 Serial Ports (J13 and J14)............................................................................................................................ 17
5.3.1 RS232 mode....................................................................................................................................... 17
5.3.2 RS422 mode....................................................................................................................................... 17
5.3.3 RS485 mode....................................................................................................................................... 18
5.4 USB 2.0 Ports (J2 and J1) ............................................................................................................................ 18
5.5 USB 3.0 Ports (J4) ....................................................................................................................................... 18
5.6 Ethernet (J11 and J12)................................................................................................................................ 18
5.7 mSATA / mPCIe (J8) .................................................................................................................................... 19
5.8 Micro SD (J17)............................................................................................................................................. 19
5.9 VGA (J3) ...................................................................................................................................................... 20

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 3
5.10 LVDS (J18) ................................................................................................................................................... 20
5.11 LCD Backlight (J19) ..................................................................................................................................... 20
5.12 Analog I/O (J10) ......................................................................................................................................... 21
5.13 Digital I/O (J15)........................................................................................................................................... 22
5.14 COM Express type 10 Nano connector (J16)..................................................Error! Bookmark not defined.
5.15 Expansion connector (J5) ........................................................................................................................... 23
6List of connectors..................................................................................................................................25
7I/O Cables.............................................................................................................................................26
8Jumper Descriptions .............................................................................................................................27
9Zeta daughter board .............................................................................................................................28
9.1 Description ................................................................................................................................................. 28
9.2 Block Diagram............................................................................................................................................. 28
9.3 Mechanical, Electrical and Environmental ................................................................................................. 28
9.4 Feature Description.................................................................................................................................... 29
9.4.1 Expansion Connector......................................................................................................................... 29
9.4.2 Power Supply ..................................................................................................................................... 29
9.4.3 PCIe .................................................................................................................................................... 29
9.4.4 USB..................................................................................................................................................... 29
9.4.5 Audio.................................................................................................................................................. 29
9.4.6 I2C ...................................................................................................................................................... 29
9.4.7 Digital IO ............................................................................................................................................ 29
9.4.8 LED Indicators .................................................................................................................................... 29
9.4.9 Jumper Configuration ........................................................................................................................ 30
9.5 Connector pinout and pin description ....................................................................................................... 31
9.5.1 Expansion connector ......................................................................................................................... 31
9.5.2 Mini Card Socket................................................................................................................................ 31
9.5.3 M.2 SATA SSD Socket......................................................................................................................... 32
9.5.4 Audio.................................................................................................................................................. 33
9.5.5 Digital I/O........................................................................................................................................... 33
9.5.6 USB-I2C header.................................................................................................................................. 33
9.6 Connector and cable Information .............................................................................................................. 34
9.6.1 Connector Table................................................................................................................................. 34
9.6.2 I/O Cables...............................................................................................Error! Bookmark not defined.
9.7 Mechanical Board Drawing of Zeta daughter board .................................................................................. 34
9.8 Connector and jumper location ................................................................................................................. 35
10 Mass storage ........................................................................................................................................36
10.1 List of options ............................................................................................................................................. 36
10.2 Installation and configuration .................................................................................................................... 36
10.3 Photos of installed modules ...........................................................................Error! Bookmark not defined.
11 “A” Model DAQ Architecture overview..................................................................................................37
11.1 Block Diagram.......................................................................................................................................... 38
11.2 Analog-to-Digital Circuit ............................................................................................................................. 38
11.2.1 A/D Circuit Overview ......................................................................................................................... 38
11.2.2 A/D Channel Selection, Sampling, and Timing................................................................................... 38
11.2.3 A/D FIFO and High Speed Sampling................................................................................................... 39
11.2.4 A/D Operation.................................................................................................................................... 40
11.2.5 A/D Resolution................................................................................................................................... 40
11.2.6 Input Range Selection........................................................................................................................ 41
11.2.7 Converting A/D Readings to Volts or Engineering Units.................................................................... 41
11.2.8 Measurement Accuracy and Calibration ........................................................................................... 42
11.2.9 Input Impedance................................................................................................................................ 42
11.3 Digital-to-Analog Circuit ............................................................................................................................. 43

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 4
11.3.1 Overview............................................................................................................................................ 43
11.3.2 D/A Resolution................................................................................................................................... 43
11.3.3 Output Range Selection..................................................................................................................... 43
11.3.4 D/A Conversion Formula.................................................................................................................... 44
11.3.5 Output Accuracy and Calibration....................................................................................................... 44
11.4 Digital I/O Features..................................................................................................................................... 45
11.4.1 Overview............................................................................................................................................ 45
11.4.2 Edge Detection Circuit ....................................................................................................................... 45
11.4.3 Support for Special Functions............................................................................................................ 46
11.4.4 Power Pins ......................................................................................................................................... 46
11.5 Counter/Timer Features............................................................................................................................. 47
11.5.1 Overview............................................................................................................................................ 47
11.5.2 Counter Commands........................................................................................................................... 47
11.5.3 Counter I/O Signals ............................................................................................................................ 47
11.5.4 Counter Advanced Features .............................................................................................................. 48
11.6 Pulse Width Modulator Features ............................................................................................................... 49
11.6.1 Overview............................................................................................................................................ 49
11.6.2 PWM Commands ............................................................................................................................... 49
11.6.3 PWM Output Signals.......................................................................................................................... 49
11.7 Interrupt Operation.................................................................................................................................... 50
11.7.1 Overview............................................................................................................................................ 50
11.7.2 Interrupt Sources............................................................................................................................... 50
12 “D” Model DAQ Architecture overview..................................................................................................51
12.1 Block Diagram............................................................................................................................................. 52
12.2 Digital IO specification................................................................................................................................ 52
12.3 Configuration and Programming................................................................................................................ 52

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 5
1Important Safe Handling Information
WARNING!
ESD-Sensitive Electronic Equipment
Observe ESD-safe handling procedures when working with this product.
Always use this product in a properly grounded work area and wear
appropriate ESD-preventive clothing and/or accessories.
Always store this product in ESD-protective packaging when not in use.
Safe Handling Precautions
The Zeta baseboard contains a high number of I/O connectors with connection to sensitive electronic
components. This creates many opportunities for accidental damage during handling, installation and
connection to other equipment. The list here describes common causes of failure found on boards returned to
Diamond Systems for repair. This information is provided as a source of advice to help you prevent damaging
your Diamond (or any vendor’s) embedded computer boards.
ESD damage –This type of damage is usually almost impossible to detect, because there is no visual sign of
failure or damage. The symptom is that the board eventually simply stops working, because some component
becomes defective. Usually the failure can be identified and the chip can be replaced.
To prevent ESD damage, always follow proper ESD-prevention practices when handling computer boards.
Damage during handling or storage –On some boards we have noticed physical damage from mishandling. A
common observation is that a screwdriver slipped while installing the board, causing a gouge in the PCB surface
and cutting signal traces or damaging components.
Another common observation is damaged board corners, indicating the board was dropped. This may or may
not cause damage to the circuitry, depending on what is near the corner. Most of our boards are designed with
at least 25 mils clearance between the board edge and any component pad, and ground / power planes are at
least 20 mils from the edge to avoid possible shorting from this type of damage. However, these design rules are
not sufficient to prevent damage in all situations.
A third cause of failure is when a metal screwdriver tip slips, or a screw drops onto the board while it is powered
on, causing a short between a power pin and a signal pin on a component. This can cause overvoltage / power
supply problems described below. To avoid this type of failure, only perform assembly operations when the
system is powered off.
Sometimes boards are stored in racks with slots that grip the edge of the board. This is a common practice for
board manufacturers. However, our boards are generally very dense, and if the board has components very
close to the board edge, they can be damaged or even knocked off the board when the board tilts back in the
rack. Diamond recommends that all our boards be stored only in individual ESD-safe packaging. If multiple
boards are stored together, they should be contained in bins with dividers between boards. Do not pile boards
on top of each other or cram too many boards into a small location. This can cause damage to connector pins or
fragile components.
Power supply wired backwards –Our power supplies and boards are not designed to withstand a reverse power
supply connection. This will destroy each IC that is connected to the power supply (i.e. almost all ICs). In this
case the board will most likely will be unrepairable and must be replaced. A chip destroyed by reverse power or
by excessive power will often have a visible hole on the top or show some deformation on the top surface due
to vaporization inside the package. Check twice before applying power!
Bent connector pins –This type of problem is often only a cosmetic issue and is easily fixed by bending the pins
back to their proper shape one at a time with needle-nose pliers. The most common cause of bent connector
pins is when a PC/104 board is pulled off the stack by rocking it back and forth left to right, from one end of the
connector to the other. As the board is rocked back and forth it pulls out suddenly, and the pins at the end get
bent significantly. The same situation can occur when pulling a ribbon cable off of a pin header. If the pins are
bent too severely, bending them back can cause them to weaken unacceptably or even break, and the
connector must be replaced.

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 6
2Introduction
Zeta is a miniature embedded computer consisting of two boards: a COM (computer on module), which provides
the CPU and related core functionality, and a baseboard, which provides the “final inch” of I/O such as Ethernet
magnetics, serial port transceivers, power supply, and real-world I/O. Zeta is based on the COM Express “type
10” or “mini” form factor, which is one of the smallest industry-standard COM form factors for x86 processors,
measuring only 55 x 84 mm / 2.2 x 3.3 inches. The use of a miniature COM plus a same-size baseboard enables
Zeta to deliver an impressive array of features and performance in a very small size, achieving as much as a 60%
reduction in area compared to other form factors such as PC/104.
The Zeta SBC offers equivalent performance to Diamond’s Aries SBC at only 40% the size.
2.1 Available Configurations
Zeta is available in two major configurations: DAQ (full data acquisition, model numbers ending in A) and DIO
(digital I/O only, model numbers ending in D). Each configuration is offered with 3 choices of COMs, offering 3
different options of processor / performance / memory / price.
Model
ZETA-E3815-2GA/D
ZETA-E3940-4GA/D
ZETA-N4200-8GA/D
Processor
Intel “Bay Trail”
E3815
Intel “Apollo Lake”
E3940
Intel “Apollo Lake”
N4200
CPU clock rate
1.33GHz dual core
1.6GHz quad core
1.1GHz quad core
Passmark rating
Memory
2GB DDR3L
4GB DDR3L
8GB DDR3L
LCD
Single-channel 24-bit
up to 1920 x 1200
Power consumption
84 mm
55 mm

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 7
Core I/O features common to all models of Zeta include the following:
Feature
Value
Serial ports
4x RS-232/422/485
USB2.0
4
USB3.0
1
Input voltage
6-36VDC
Gigabit Ethernet ports
2
VGA display
1
LVDS display
1 single channel
Micro-SD socket
1
Mini PCIe / mSATA socket
1
Expansion connector
PCIe x 1 –2 ports
SATA –1 port
HD audio - 1
I2C –1 channel
USB 2.0 –1 port
Data acquisition / digital I/O features are as follows:
Feature
A model with DAQ
D model with DIO
Analog inputs
16 single-ended / 8
differential, 16-bit resolution,
100KHz max sample rate
-
Input ranges
0-10V, 0-5V, +/-10V, +/-5V
-
Analog outputs
4 16-bit
-
Output ranges
0-5V, 0-2.5V
-
Digital I/O
27 lines organized as 2 8-bit
ports and 11 1-bit ports
16 lines organized as 2 8-bit
ports
DIO features
Each port programmable
in/out; all ports configurable
for 3.3V or 5V logic
compatibility and pull-
up/pull-down resistors
Each port programmable
in/out; all ports configurable
for 3.3V or 5V logic
compatibility and pull-
up/pull-down resistors
Counter/timers
8 32-bit counters with
up/down counting and
internal/external clock
selection; programmable
interrupt capability
-
PWM
4 24-bit PWMs with 0-100%
duty cycle programmability
-

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 8
2.2 Mechanical, Electrical, Environmental
Dimensions 55 x 84 mm / 2.16” x 3.30”
Cooling Conduction Cooling via heat spreader mounted on the bottom
Power input 6V to +36V standard; fixed 12V optional with minimum order quantity
Operating Temp -40°C to +85°C at the external surface of the heat spreader
2.3 Operating System Support
Linux Ubuntu 16.04 LTS (all models)
Windows 7 (E3815 models only)
Windows 10 IoT (E3940 / N4200 models only)

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 9
3Block Diagram
Figure 1: Functional Block Diagram

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 10
4Feature Description
4.1 Power Supply
Zeta base board can be powered either from any DC power supply with an output voltage range of +6V to +36V.
This range makes Zeta compatible with standard power supply voltages of 12V, 24V, and 28V. In addition, Zeta
can operate in a vehicle environment due to its ability to run on 6VDC.
Maximum allowable reflected ripple, measured at the voltage input connector is 50mV p-p.
4.2 Ethernet
Zeta base board supports one standard and one optional 10/100/1000 Ethernet port. The standard port comes
directly from the COM module. The optional port is derived from the Intel WGI210IT PCIe Ethernet controller.
This controller is accessed via x1 PCIe lane from the COM. Both ports have on-board magnetics to allow use with
a DSC standard Ethernet cable.
On-board LEDs are provided for Link, Activity, and Speed on each port. The LEDs are located along the board
edge near the Ethernet connectors. Both connectors provide access to the LED signals.
4.3 Micro SD
Zeta base board supports one micro SD connector with 4-bit data 3.3V for an additional low-cost storage option.
4.4 USB
Zeta base board supports 6 USB2.0 ports and one USB 3.0 port.
•Four USB2.0 ports are routed to 2x5 headers for use with cables.
•One USB2.0 port is interfaced to the PCIe Mini card socket to support USB minicards.
•One USB2.0 port is routed to Expansion connector for use on installed daughterboards.
•The USB 3.0 port is routed to a 2x6 pin header. This pin header is compatible with the Intel standard
dual USB 3.0 connector for convenience.
4.5 VGA
Zeta base board supports VGA display interface. DDI to VGA converter chip (CH7517) is used to covert DDI from
COM connector to VGA signals.
4.6 LCD
Zeta supports a 24-bit single channel LVDS display through a 1x20 RA latching connector. Separate backlight
supply connector provides LCD backlight supply and PWM control. Backlight supply is given externally through
the main power input connector.
4.7 Audio
HD audio from the COM is available on the expansion connector. A daughterboard is required to utilized the
audio feature.
4.8 Serial Ports
Zeta supports 4 serial ports using an LPC UART (XR28V384). UARTs from the COM are not utilized. Protocol
selection and RS-422/485 line termination are provided using an I2C digital I/O expander chip driven by the
COM. The configuration can be done in the BIOS and also via user application software.
4.9 RTC Backup Battery

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 11
A 2x1 connector is provided for connecting an external backup battery to maintain the real-time clock. The
allowable battery voltage range is 3.0 –3.6VDC.
The backup battery is not required to maintain custom BIOS settings.
4.10 mSATA/PCIe Mini-card Socket
Zeta provies one mSATA/Mini PCIe socket. This socket supports full-size PCIe Minicards and mSATA cards.
4.11 PCIe Link Routing
Zeta base board makes use of 3 PCIe lanes from the COM connector
•Lane 1 –MiniPCIe socket
•Lane 2 –Second Gigabit Ethernet through i210 Ethernet controller
•Lane 3 –EMX expansion socket
•Lane 4 –EMX expansion socket (Not available in EmNANO i2300)
4.12 Data Acquisition
Zeta base board provides a data acquisition sub circuit containing analog input, analog output, and digital I/O
features. This circuit is controlled by an FPGA attached to the processor via the LPC bus. A pin header on the
board provides access to JTAG signals for reprogramming the FPGA on the board and in the field.
The data acquisition circuit is based on the Diamond Zeta base board.
Features include:
16 single-ended / 8 differential analog inputs with 16-bit resolution, programmable input ranges, and 100KHz
sample rate;
4 analog outputs with 16-bit resolution and programmable output ranges
27 digital I/O lines with selectable 3.3V/5V logic levels, selectable pull-up/down resistors, programmable
direction, buffered I/O, and capability for use as counter/timer and PWM circuits.
4.13 GPIO
16 GPIO are available via I2C expander circuit (PCA9535) on the digital I/O header for Low cost version, when
Data acquisition circuit is not populated.
4.14 LED Indicators
Zeta provides the following LED indicators.
•Power on -Green LED (for 12V, 5V and 3.3V)
•Power Good -Green LED for Power Good indication
•BIOS LED -Green LED to indicate Module is booted successfully
•Ethernet -Green LED for Link, activity, and speed for each port
4.15 Expansion Connector
Zeta supports I/O expansion capability using a high-density 40-pin expansion connector. A daughterboard is
available from Diamond Systems utilizing the expansion signals to provide additional I/O and mass storage
capability. Users can also design their own custom I/O daughterboards to provide custom I/O.
•Two PCIe x 1 lanes
•HD Audio interface
•SATA interface
•USB2.0 interface
•I2C interface
5Mechanical Drawing

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 12
The form factor of the board is COM Express Nano Type 10 with dimensions 55mm x 84mm.
Figure 2: Mechanical outline, top view
Figure 3: Mechanical outline, Side view

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 13
6I/O Connector and Jumper Locations
Figure 4 : Zeta board connectors and jumpers - Top side

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 14
Figure 5 : Zeta board connectors - Bottom side

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 15
7Getting started
7.1 Development Kit
Zeta is available in a complete development kit that includes a full set of I/O cables and the selected
SDK. Simply install the pre-configured flash disk, attach cables / keyboard / mouse / monitor, power
up, and the system is ready to run.
7.2 Development Kit Contents
•Zeta SBC with DAQ
•Zeta Cable Kit CK-ZETA-01
•32GB MLC mSATA flash-disk with bootable image
•Zeta Development kit user manual
7.3 System Setup
1. Attach the VGA cable 6981084 and USB cables 6981082 as needed.
2. Attach display, keyboard, and mouse (if needed) to the cables.
3. Check the jumpers as described in Section 7 for a default settings or change as desired.
4. Connect power to power input connector J9 using your own power supply with power cable 6981070. The
input connector and cable are keyed to prevent incorrect connection.
WARNING: Attaching the power connector incorrectly will destroy the Zeta base board!
For a quick verification that the system is set up and working properly, if no boot device is attached, the
system will boot to shell utility in case of Arbor module.
7.4 Boot Device Options
Zeta base board can boot from mSATA or any of the available USB ports or micro SD card (linux only). Diamond
Systems’ software and hardware development kits include a mSATA with pre-loaded OS.
Zeta base board can be booted from micro SD card for linux OS. Zeta base board can be booted from an external
hard drive connected mini card to SATA adapter board.
WARNING: It is possible to destroy the Helix SBC by connecting a SATA cable incorrectly (reverse orientation
or offset from correct position). Always use keyed cables to avoid connection errors.
The Boot device selection and priority are configured in the BIOS Boot menu. Only devices which are connected
to the SBC will appear in the list of options. Therefore, if user wants to select a hard drive or USB device as the
boot device, the SBC should be connected first, then boot up, enter the BIOS, and select the desired device as
the boot device. Boot type order can be changed using ‘+’/’-‘ key.
The following are a few examples of boot scenarios.
Attach a mSATA device on the shared mSATA / PCIe MiniCard socket
Attach a bootable USB device to one of the USB ports
Attach a M.2 SATA SSD to M.2 socket on daughter board

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 16
Connect an externally powered SATA hard drive to shared mSATA / PCIe MiniCard socket using mini card
to SATA adapter board
PXE boot
Micro SD Card (linux only)
7.5 Installing OS and Booting
The following steps describe how to install an operating system from a mSATA using Arbor module. Follow the
below steps to install a 32-bit Windows 7 legacy operating system on a mSATA.
Connect a USB pen drive to a USB port of (J1 or J4) of Zeta base board having 32-bit Windows 7 installation
image.
Power ON the board.
Enter the BIOS menu by pressing DEL key. The mSATA and USB device should be detected in BIOS under
boot devices.
Under Boot Type Order, set the highest priority for USB.
Save the BIOS settings and restart.
The Windows 7 installer will start running. Follow the instructions to complete the installation.
Upon successful installation, boot to Windows 7 and install the necessary drivers.
Upon restart, to boot from mSATA, go to BIOS menu and under Boot Type Order set highest priority to
Hard disk.

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 17
8Connector Pinout and Signal Description
8.1 Power Input (J9)
The pinout of the power input connector is shown below. Although 4 power and 6 ground pins are provided, not
all pins need to be connected. Each connector pin can support up to 2A. The number of connections can be
determined by the total power consumption of the Zeta board plus all attached I/O (daughterboard, mSATA and
mini PCIe modules, and USB devices) divided by the input voltage, divided by 2A.
Key
1
2
GND
VIN
3
4
GND
VIN
5
6
GND
VIN
7
8
GND
VIN
9
10
GND
SYS_RST_R#
11
12
GND
VCC_5V/12P0_BKLT
13
14
PWRBTN#
8.2 RTC Battery input (J6)
The pinout for the RTC battery connector is shown below. The battery input voltage range is 3.0 –3.6VDC.
RTC_BATT
1
GND
2
8.3 Serial Ports (J13 and J14)
Serial ports 1 and 2 are provided on connector J13, and serial ports 3 and 4 are provided on connector J14.All
four serial ports support RS422, RS422 and RS485 modes.
8.3.1 RS232 mode
8.3.2 RS422 mode
TX1
1
2
RTS1
RX1
3
4
CTS1
GND
5
6
GND
TX2
7
8
RTS2
RX2
9
10
CTS2
TX3
1
2
RTS3
RX3
3
4
CTS3
GND
5
6
GND
TX4
7
8
RTS4
RX4
9
10
CTS4
TX1+
1
2
TX1-
RX1+
3
4
RX1-
GND
5
6
GND
TX2+
7
8
TX2-
RX2+
9
10
RX2-

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 18
8.3.3 RS485 mode
8.4 USB 2.0 Ports (J2 and J1)
USB port 0 and 1 are provided on connector J2, and USB port 2 and 3 are provided on connector J1. Pinout for
the connector is shown below:
Key
1
2
Shield
GND (USB1 Pwr-)
3
4
GND (USB0 Pwr-)
USB1 Data+
5
6
USB0 Data+
USB1 Data-
7
8
USB0 Data-
USB1 Pwr+
9
10
USB0 Pwr+
Key
1
2
Shield
GND (USB3 Pwr-)
3
4
GND (USB2 Pwr-)
USB3 Data+
5
6
USB2 Data+
USB3 Data-
7
8
USB2 Data-
USB3 Pwr+
9
10
USB2 Pwr+
8.5 USB 3.0 Port (J4)
One USB 3.0 port is provided on connector J4. The pinout for the connector is shown below:
USB Pwr+
1
2
NC
USB_SSRX0-
3
4
USB Pwr+
USB_SSRX0+
5
6
NC
GND (USB Pwr-)
7
8
NC
USB_SSTX0-
9
10
GND (USB Pwr-)
USB_SSTX0+
11
12
NC
8.6 Ethernet (J11 and J12)
TX3+
1
2
TX3-
RX3+
3
4
RX3-
GND
5
6
GND
TX4+
7
8
TX4-
RX4+
9
10
RX4-
TX1/RX1+
1
2
TX1/RX1-
NC
3
4
NC
GND
5
6
GND
TX2/RX2+
7
8
TX2/RX2-
NC
9
10
NC
TX3/RX3+
1
2
TX3/RX3-
NC
3
4
NC
GND
5
6
GND
TX4/RX4+
7
8
TX4/RX4-
NC
9
10
NC

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 19
Two 10/100/1000 BASE-T Ethernet ports are provided on connectors J11 and J12. The connector pinouts are
shown below. Port 1 is derived from the COM, and port 2 is derived from an Intel i210 PCIe Ethernet controller
on the baseboard.
NC
1
2
CH1_Key
CH1_D0+
3
4
CH1_D0-
CH1_D1+
5
6
CH1_D1-
CH1_D2+
7
8
CH1_D2-
CH1_D3+
9
10
CH1_D3-
NC
1
2
CH2_Key
CH2_D0+
3
4
CH2_D0-
CH2_D1+
5
6
CH2_D1-
CH2_D2+
7
8
CH2_D2-
CH2_D3+
9
10
CH2_D3-
8.7 mSATA / mPCIe (J8)
mSATA and mPICe cards are supported on connector J8. All TX/RX signals are with respect to the host. TX on the
socket drives RX on the installed module, and RX on the socket is driven by TX on the installed module. The
pinout for the connector is shown below. The two mounting standoffs at the far end of the module installation
site are not connected to ground.
PCIe MiniCard mSATA mSATA / PCIe MiniCard
Wake-
1
2
+3.3V
NC
NC
3
4
Gnd
NC
NC
5
6
+1.5V
Clkreq-
7
8
NC
Gnd
Gnd
9
10
NC
PCIe 0 Clk-
PCIe 0 Clk- *
11
12
NC
PCIe 0 Clk+
PCIe 0 Clk+ *
13
14
NC
Gnd
Gnd
15
16
NC
KEY
NC
NC
17
18
Gnd
NC
NC
19
20
Disable-
Gnd
Gnd
21
22
PCIe Reset-
PCIe 0 RX-
SATA 0 RX+
23
24
+3.3V
PCIe 0 RX+
SATA 0 RX-
25
26
Gnd
Gnd
Gnd
27
28
+1.5V
Gnd
Gnd
29
30
SMB Clk
PCIe 0 TX-
SATA 0 TX-
31
32
SMB Data
PCIe 0 TX+
SATA 0 TX+
33
34
Gnd
Gnd
Gnd
35
36
USB2_N
Gnd
Gnd
37
38
USB2_P
+3.3V
+3.3V
39
40
Gnd
+3.3V
+3.3V
41
42
WWAN LED-
Ground
Ground
43
44
WLAN LED-
NC
NC
45
46
WPAN LED-
NC
NC
47
48
+1.5V
Pull-up to +3.3V
Pull-up to +3.3V
49
50
Gnd
NC
NC
51
52
+3.3V
GND
GND
P1
P2
GND
8.8 Micro SD (J17)

www.diamondsystems.com Zeta User Manual Rev 1.0 Page 20
A Micro SD card is supported on connector J17.The Micro SD can be used as a boot device or storage device in
Linux. It can be used only as a storage device in Windows 7 and 10.
1
DAT2
2
CD/DAT3
3
CMD
4
VDD 3.3V
5
CLK
6
Ground
7
DAT0
8
DAT1
8.9 VGA (J3)
The VGA interface is provided on connector J3. Pinout for the connector is shown below:
RED
1
2
Ground
GREEN
3
4
Key
BLUE
5
6
Ground
HSYNC
7
8
DDC-Data
VSYNC
9
10
DDC-Clock
8.10 LVDS (J18)
The single-channel LVDS interface is provided on connector J18. The pinout is shown below:
VCC_5V_LVDS_CON
1
V_3P3_LVDS_CON
2
LVDS_A_CH_CLK_P
3
LVDS_A_CH_CLK_N
4
GND
5
LVDS_A_CH_0_P
6
LVDS_A_CH_0_N
7
GND
8
LVDS_A_CH_1_P
9
LVDS_A_CH_1_N
10
GND
11
LVDS_A_CH_2_P
12
LVDS_A_CH_2_N
13
GND
14
LVDS_A_CH_3_P
15
LVDS_A_CH_3_N
16
LVDS_DDC_CLK
17
LVDS_DDC_DAT
18
GND
19
GND
20
8.11 LCD Backlight (J19)