WinSystems SBC35-427 User manual

WinSystems, Inc. | 715 Stadium Drive, Arlington, Texas 76011 | 817-274-7553 | [email protected] | www.winsystems.com
SBC35-427
Industrial Single Board Computer with
Intel®Atom™ E3900 processor,
Dual Ethernet, Multi-Display, and Expansion
Product Manual

SBC35-427
v1.0 www.winsystems.com Page ii
Revision History
Copyright and Trademarks
Copyright 2019, WinSystems, Inc.
No part of this document may be copied or reproduced in any form or by
any means without the prior written consent of WinSystems, Inc. The
information in the document is subject to change without notice. The
information furnished by WinSystems, Inc. in this publication is believed to
be accurate and reliable. However, WinSystems, Inc. makes no warranty,
express, statutory, implied or by description, regarding the information set
forth herein or regarding the freedom of the described devices from
patent infringement. WinSystems, Inc. makes no warranty of
merchantability or fitness for any purpose. WinSystems, Inc. assumes no
responsibility for any errors that may appear in this document.
Trademark Acknowledgments
WinSystems is a registered trademark of WinSystems, Inc.
Intel and Intel Atom are trademarks of Intel Corporation or its subsidiaries
in the U.S. and/or other countries.
Mili-grid and MXMag are trademarks of Molex, Inc.
DisplayPort, the DisplayPort logo, and VESA are trademarks owned by the
Video Electronics Standards Association (VESA) in the United States and
other countries.
All other marks are the property of their respective companies.
Document
Version
Last Updated
Date Brief Description of Change
v1.0 4/1/19 Initial release

SBC35-427
v1.0 www.winsystems.com Page iii
1 Before You Begin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3 Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
4 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
5 General Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5.1 System Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
6 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
7 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
7.1 Component Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
7.1.1 Top View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
7.1.2 Bottom View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.2 Watchdog Timer (WDT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
7.2.1 WDT Register Usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7.3 Real-time Clock/Calendar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
7.4 System Management Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
7.5 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
7.5.1 J20 - Input Power Header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.5.2 J12 - Power Module Header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.5.3 J8 - External Battery Header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.5.4 J7 - SATA Power Header. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.5.5 J13 - External Fan Header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.5.6 J6 - LVDS Data and Backlight Header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.5.7 J504 - USB Touchscreen Header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.5.8 J18/J19 - DisplayPort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.5.9 SP500 - Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.5.10 J2 - HD Audio Header. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.5.11 J1 - Legacy RS232 Header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.5.12 J4 - Serial Ports (RS232/422/485) Header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.5.13 J10/J11 - USB 2.0 Port 2x Headers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table of Contents

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7.5.14 J17 - USB 3.1 Gen 1 Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.5.15 J3 - Serial ATA 6Gbps Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.5.16 J500 - System Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.5.17 J15/J16 - Ethernet (LAN) RJ45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.5.18 J5 - GPIO General-Purpose Input/Output Header . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.5.19 J14 - Analog Inputs (Analog to Digital) Header. . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.5.20 J502 - WinSystems Modular IO80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.5.21 J503 - M.2 Socket 1, with E key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.5.22 J501 - Mini PCIe (with mSATA Support) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.6 Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
7.6.1 JP1 - Board Configuration Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.7 LED Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
8 BIOS Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
8.1 Software Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
8.1.1 Software Design Specification: UEFI Operating System Support . . . . . . . . . . . . 24
8.1.2 Software Design Specification: Legacy Operating System Support . . . . . . . . . . 24
8.1.3 Software Design Specification: Boot Device Configuration . . . . . . . . . . . . . . . . . 25
8.1.4 Software Design Specification: BIOS Update Mechanisms . . . . . . . . . . . . . . . . . 25
8.1.5 Software Design Requirements: BIOS Components. . . . . . . . . . . . . . . . . . . . . . . 25
8.2 BIOS Update with UEFI Shell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
8.2.1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8.2.2 Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8.3 Embedded Controller (EC) Update with UEFI Shell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
8.3.1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8.3.2 Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
9 Accessories and Cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
10 Software Drivers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
A Best Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
B Mechanical Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
C Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

SBC35-427/Before You Begin
v1.0 www.winsystems.com Page 1
1. Before You Begin
Review the warnings in this section and the best practice
recommendations (see “Best Practices” on page 31) when using and
handling the WinSystems SBC35-427 board. Following these
recommendations provides an optimal user experience and prevents
damage. Read through this document and become familiar with the
SBC35-427 before proceeding.
1.1 Warnings
Only qualified personnel should configure and install the SBC35-427.
While observing best practices, pay particular attention to the following:.
2. Introduction
This manual provides configuration and usage information for the SBC35-
427. If you still have questions, contact Technical Support at (817) 274-
7553, Monday through Friday, between 8 AM and 5 PM Central Standard
Time (CST).
Refer to the WinSystems website at http://www.winsystems.com/ for
other accessories (including cable drawings and pinouts) that can be used
with your SBC35-427.
3. Functionality
The SBC35-427 board is a small form factor 3.5-inch single board
computer (SBC) featuring the latest generation Intel Apollo Lake-I SOC
processor.
This full-featured SBC supports three independent video displays (two
DisplayPort and one LVDS video), dual Ethernet, two USB 3.1 Gen 1 ports,
four USB 2.0 ports, eight general purpose I/O (GPIO) lines, two channels
analog-to-digital converter (ADC), stereo audio, and a Trusted Platform
Module (TPM 2.0)
FAILING TO COMPLY WITH THESE BEST PRACTICES MAY DAMAGE THE SBC35-
427 AND VOID YOUR WARRANTY.
Avoid Electrostatic Discharge (ESD)
Only handle the circuit board and other bare electronics when electrostatic
discharge (ESD) protection is in place. Having a wrist strap and a fully grounded
workstation is the minimum ESD protection required before the ESD seal on
the product bag is broken.

SBC35-427/Features
v1.0 www.winsystems.com Page 2
Solid state storage options include an mSATA socket and optional soldered
down eMMC device for operating systems (OS) and applications.
Additionally, the board supports an external SATA device.
Expansion options are provided through the M.2 Socket 1 with E key,
Mini PCIe socket (with mSATA support) and WinSystems Modular IO80
interface.
The SBC35-427 board supports up to 8 GB of socketed SODIMM DDR3L
Error Correcting Code (ECC) SDRAM.
4. Features
The SBC35-427 provides the following features.
Single Board Computer
• Multi-core Intel Atom E3900 processors
– X5 E3930 dual core, up to 1.8 GHz (base frequency 1.3 GHz)
– X5 E3940 quad core, up to 1.8 GHz (base frequency 1.6 GHz)
– X7 E3950 quad core, up to 2.0 GHz (base frequency 1.6 GHz)
Operating Systems (compatibility)
• Windows 10 x64, IoT Core, and Professional
•Linuxx64
• Most x86 operating systems
Memory
• Up to 8 GB ECC DDR3L SODIMM (socketed)
BIOS
• AMI UEFI-compliant BIOS in SPI flash device
Video Interfaces (supports three simultaneous displays)
• 2x DisplayPort (version 1.2)
– 4096 x 2160 at 60 Hz
• Low-voltage differential signaling (LVDS)
– Up to 24 bpp color panel support
– Supports 1920 x 1200 at 60 Hz resolution in dual LVDS bus mode
Ethernet
• 2x Intel 10/100/1000 Mbps controllers using Intel i210
• Wake-on-LAN support, both channels

SBC35-427/Features
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Storage
• SATA 6Gb/s port
• mSATA SSD support (Mini PCIe card)
• eMMC solid state disk
Data Acquisition
• 8x GPIO bidirectional lines
• 2x analog to digital (ADC) lines
Bus Expansion
• WinSystems Modular IO80
– 2x PCIe x1 Gen 2 (one PCIe x1 lane is software switchable to 1x
USB 3.1 Gen 1 port)
–2xUSB2.0
–1xI2C
–1xSPI
–4xGPIO
–1xLPC
–HDstereoaudio
• M.2 Socket 1, with E key, type 2230
• Mini PCIe card (mPCIe, USB, mSATA)
Serial Interface
• 2x RS232/422/485 serial ports
USB
• 2x USB 3.1 Gen 1 ports
•9xUSB2.0ports
– 4x USB 2.0 available on USB header
– 2x USB 2.0 on WinSystems Modular IO80
–1xUSB2.0onM.2
–1xUSB2.0onMiniPCIecard
– 1x USB 2.0 on Touch Controller
Power
• Supports a wide range DC input power: 9V to 50V
• External battery connector, operates with no battery connected
• +5V and +12V SATA power

SBC35-427/Features
v1.0 www.winsystems.com Page 4
Industrial Operating Temperature
• -40 to +85°C (-40 to +185°F)1
Additional Features
• Hardware security - Trusted Platform Module (TPM) enabled
•Watchdogtimeradjustable from 1 second to 255 minute reset
•RoHScompliant
• Backlight power supported
• Custom splash screen on startup
• Intel low-power Gen9 graphics engine
• Intel security engine
1. Requires airflow and high temperature grade DRAM.

SBC35-427/General Operation
v1.0 www.winsystems.com Page 5
5. General Operation
5.1 System Block Diagram
WinSystems’ SBC35-427 is a small form factor single board computer
(SBC) featuring the latest generation Intel Apollo Lake-I SOC processor. Its
small size, low power, rugged design, and extended operational
temperature make it a great fit for rugged embedded systems in the
industrial control, transportation, energy, and industrial IoT markets.
This full-featured SBC supports three independent video displays (two
DisplayPort and LVDS video), dual Ethernet, two USB 3.1 Gen 1 ports, four
USB 2.0 ports, eight general purpose I/O (GPIO) lines, two channels
analog-to-digital converter (ADC), stereo audio, and a watchdog timer.
The WinSystems SBC35-427 SBC features a dual or quad-core processor
and up to 8 GB of socketed SODIMM DDR3L ECC SDRAM. The SBC includes
an mSATA socket and optional soldered down eMMC device for solid state
storage of operating systems and applications. Additionally, the board
supports an external SATA device.

SBC35-427/Specifications
v1.0 www.winsystems.com Page 6
The board has expansion capabilities via a M.2 Socket 1 with E key,
Mini PCIe socket (with mSATA support) and WinSystems Modular IO80
interface.
The SBC35-427 supports Linux, Windows 10, DOS, and other x86-
compatible real-time operating systems. Drivers are available from the
WinSystems website.
6. Specifications
The SBC35-427 adheres to the following specifications and requirements.
Table 1: SBC35-427 specifications
Feature Specification
Electrical
VCC Supports a wide range DC input power: 9V to 50V
Models SBC35427-39XX-M-T
39XX = CPU (3930, 3940, 3950)
M = EMMC (0, 16, 32, 64, 128, 256 GB)
T = Thermal option (1 = heat spreader, 2 = heat
spreader + heatsink, 3 = heat spreader + heatsink +
fan)
Processor E3930 x5 dual core up to 1.8 GHz
E3940 x5 quad core up to 1.8 GHz
E3950 x7 quad core up to 2.0 GHz
Mechanical
Dimensions 5.75 in x 4.00 in (146 mm x 102 mm) (3.5” SBC)
Weight 4.2 oz. (120 g), without heat sink
PCB thickness 0.078 in. (1.98 mm)
Environmental
Temperature -40 to +85°C (-40 to +185°F)a
a. Requires airflow and high temperature grade DRAM.
Humidity (RH) 5% to 95% non-condensing
Mechanical shock testing TBD
Random vibration testing TBD
Mean time between
failure (MTBF) b
b. A MTBF measurement is based on a statistical sample and is not intended to pre-
dict any one specific unit's reliability; thus MTBF is not, and should not be con-
strued as, a warranty measurement.
MTBF (hours) 171370.5013
MTBF (years) 19.56284262
RoHS compliant Yes
Operating Systems
Runs 64-bit Windows, Linux, and other x86-64-compatible operating systems.

SBC35-427/Configuration
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7. Configuration
This section describes the SBC35-427 components and configuration.
7.1 Component Layout
7.1.1 Top View
2x USB 2.0
ENET
8x GPIO
2x USB 2.0
DisplayPort
POWER
Fan ADC
2x USB 3.0
DisplayPort
ENET
2X RS232/
422/485
LVDS and
Backlight
AUDIO
SATA
SATA POWER
1X RS232
POWER
MODULE
BATTERY

SBC35-427/Configuration
v1.0 www.winsystems.com Page 8
Table 2: Top view components
Item Description Reference
J1 Legacy RS232 Header page 16
J2 HD Audio Header page 16
J3 SATA 6Gb/s Port page 19
J4 Serial Ports (RS232/422/485) Header page 17
J5 GPIO General-Purpose Input/Output Header page 20
J6 LVDS Data and Backlight Header page 14
J7 SATA Power Header page 13
J8 External Battery Header page 12
J10/J11 USB 2.0 Port 2x Headers page 18
J12 Power Module Header page 12
J13 External Fan Header page 13
J14 Analog Inputs (Analog to Digital) Header page 21
J15/J16 Ethernet (LAN) RJ45 page 19
J17 USB 3.1 Gen 1 Ports page 19
J18/J19 DisplayPort page 15
J20 Input Power Header page 11
JP1 Board Configuration Jumpers page 23

SBC35-427/Configuration
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7.1.2 Bottom View
M.2 (E key)
Mini PCIe
Modular IO80
USB
Touchscreen
System
Memory
Table 3: Bottom view components
Item Description Reference
J500 System Memory page 19
J501 Mini PCIe (with mSATA Support) page 23
J502 WinSystems Modular IO80 page 22
J503 M.2 Socket 1, with E key page 23
J504 USB Touchscreen Header page 15

SBC35-427/Configuration
v1.0 www.winsystems.com Page 10
7.2 Watchdog Timer (WDT)
7.2.1 WDT Register Usage
The Watchdog Timer (WDT) implemented in the SBC35-427 board’s
embedded controller (EC) can be used to reset the system if a lock-up
prevents a software task from periodically resetting the watchdog timer.
The WDT is controlled through a set of virtual registers that are exposed to
Apollo Lake applications by the EC on the SBC35-427 board. The WDT can
be programmed to count in either seconds or minutes; it has a minimum
granularity of 1 second, and a maximum granularity of 255 minutes.
7.3 Real-time Clock/Calendar
A real-time clock is used as the AT-compatible clock/calendar. It supports a
number of features including periodic and alarm interrupt capabilities. In
addition to the time and date-keeping functions, the system configuration
is kept in CMOS RAM contained within the clock section. A battery must be
enabled for the real-time clock to retain time and date during a power
down.
WinSystems has software available for manipulating the CMOS RTC from a
high-level application.
7.4 System Management Software
The system management software for the SBC35-427 board consists of a
set of library functions and example applications that demonstrate the
functionality of the system management software. The software is
available for both Windows 10 and Ubuntu Linux.
The system management software is custom software designed to use the
built-in functionality of the SBC35-427 board’s embedded controller
(MicroChip MEC1418) to perform system management tasks such as
reporting of board voltages (3.3V, 5V, 12V, Vddq, Vcore, Vbat, and the pair of
user ADC inputs), the control of the system fan, reporting of the ambient
temperature and setting of temperature sensor thresholds. Additional
functionality allows applications to determine the version of the EC
firmware, report the boot image used when the system started, and allow
the EC to update its own firmware image. The EC contains a pair of
identical images for redundancy and rolls over to a correct image if the
first image is compromised.

SBC35-427/Configuration
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7.5 Connectors
7.5.1 J20 - Input Power Header
Use this connection to supply power to the SBC35-427. This computer
supports a wide range DC input power from 9V to 50V.
Layout and Pin Reference
Connector
• Molex Micro-Fit 3.0 vertical header
Part Number: 43045-0418
Matching Connector
• Molex Micro-Fit 3.0 receptacle housing
Part Number: 43025-0400
Pin Name Pin Name
1 Voltage In (VIN) 2 Voltage In (VIN)
3 Ground (GND) 4 Ground (GND)
2
43
1

SBC35-427/Configuration
v1.0 www.winsystems.com Page 12
7.5.2 J12 - Power Module Header
This connection accepts WinSystems power modules providing additional
power options such as PoE PD, and UPS backup. Contact a WinSystems
Applications Engineer at [phone].
Layout and Pin Reference
Connector
• Samtec SQW series 2.00 mm rugged sockets
Part Number: SQW-110-01-F-D-VS-A-K-TR
Matching Connector
• Samtec TW series 2.00 mm flex stack
Part Number: TW-10-03-F-D-280-SM-A
7.5.3 J8 - External Battery Header
An external battery connected to the SBC35-427 provides standby power
for the real-time clock.
Layout and Pin Reference
Connector
• Hirose DF13 series 1.25 mm 2-pin
Diagram Pin Name Pin Name
1VIN 2GND
3VIN 4GND
5VIN 6GND
7VIN 8GND
9VIN 10GND
11 VIN 12 GND
13 V12_RUN 14 PM_GPIO0
15 I2C_PM_SCL 16 PM_GPIO1
17 I2C_PM_SDA 18 PMU_RSTBTN_N
19 ALL_SYS_PWRGD 20 PM_PWRBTN_N
2
2019
1
Pin Name
1VBAT
2GND
1

SBC35-427/Configuration
v1.0 www.winsystems.com Page 13
Part Number: DF13C-2P-1.25V (51)
Matching Connector
• Hirose DF13C 1.25 mm 2-pin
Part Number: DF13C-2S-1.25C
7.5.4 J7 - SATA Power Header
Power is supplied to the SATA device via the connector at J7.
Layout and Pin Reference
Connector
• Hirose DF11 series 2.00 mm dual-row 4-pin
Part Number: DF11C-4DP-2V(57)
Matching Connector
• Hirose DF11 series 2.00 mm crimping socket 4-pin
Part Number: DF11-4S-2C
7.5.5 J13 - External Fan Header
Layout and Pin Reference
Connector
• Hirose DF13 series 1.25 mm 3-pin
Pin Name Pin Name
1 +12V SB 2 +5V SB
3GND 4GND
1
Pin Name
1TACH_EC
2+12VDC
3GND
1

SBC35-427/Configuration
v1.0 www.winsystems.com Page 14
Part Number: DF13C-3P-1.25V (51)
Matching Connector
• Hirose DF13C 1.25 mm 3-pin
Part Number: DF13C-2S-1.25C
7.5.6 J6 - LVDS Data and Backlight Header
The SBC35-427 supports single channel LVDS flat panel displays with
resolutions up to 1920x1200 at 24 bpp.
The LVDS output signals are odd bus, differential signals to the LVDS
receiver. Each LVDS Poutput makes a differential pair with LVDS N.
Layout and Pin Reference
Connector
• Hirose DF13 Series 1.25 mm double row 30-pin
Pin Name Description Pin Name Description
1LVDSAO_PChannelA-PositiveLVDS
Output
2 LVDSBO_P Channel B - Positive LVDS
Output
3 LVDSAO_N Channel A - Negative LVDS
Output
4 LVDSBO_N Channel B - Negative LVDS
Output
5 GND Ground 6 GND Ground
7 LVDSCO_P Channel C - Positive LVDS
Output
8 LVDSDO_P Channel D - Positive LVDS
Output
9 LVDSCO_N Channel C - Negative LVDS
Output
10 LVDSDO_N Channel D - Negative LVDS
Output
11 GND Ground 12 GND Ground
13 LVDSCKO_P Positive LVDS Clock Output 14 DDC_SCL Open-drain DDC Data I/O
15 LVDSCKO_N Negative LVDS Clock Output 16 DDC_SDA Open-drain DDC Clock I/O
17 GND Ground 18 GND Ground
19 I2C_TC_SCL I2C Touch Control Clock 20 VCC_LVDS +3.3 VDC
21 I2C_TC_SDA I2C Touch Control Data 22 VCC_LVDS +3.3 VDC
23 GND Ground 24 GND Ground
25 BKLTPWM Backlight PWM brightness
control
26 BKLT_PWR Backlight Power (+5 VDC or
+12 VDC)
27 BKLT_EN Backlight Enable 28 BKLT_PWR Backlight Power (+5 VDC or
+12 VDC)
29 SEL68 Select 8/6-bit 30 BKLT_PWR Backlight Power (+5 VDC or
+12 VDC)
1
2
29
30

SBC35-427/Configuration
v1.0 www.winsystems.com Page 15
Part Number: DF13EA-30DP-1.25V(51)
Matching Connectors
• Hirose DF13C 1.25 mm double row 30-pin
Part Number: DF13-30DS-1.25C
7.5.7 J504 - USB Touchscreen Header
J504 provides plug-and-play support for a USB touchscreen. Aside from a
simpler and faster interface, it also provides power within the USB cable,
eliminating the need for a separate, dedicated cable to power the
touchscreen.
Layout and Pin Reference
Connector
• Molex 1.25 mm PicoBlade
Part Number: 53398-0571
Matching Connector
• Molex 1.25 mm PicoBlade housing
Part Number: 51021-0500
7.5.8 J18/J19 - DisplayPort
Layout and Pin Reference
Standard full-size 20-pin DisplayPort (Version 1.2)
Connector
• Molex 47272 series DisplayPort receptacle
Matching Connector
• Standard DisplayPort compliant cable
Pin Name
1GND
2+5VSB
3DATA+
4DATA-
5GND
1

SBC35-427/Configuration
v1.0 www.winsystems.com Page 16
7.5.9 SP500 - Speaker
An on-board speaker, SP500, is available for sound generation. The BIOS
activates the speaker to beep during POST failure. Each error has its own
unique beep code. Refer to BIOS Status and Errors in the supplemental
BIOS Manual located under documentation on the WinSystems SBC35-427
webpage.
7.5.10 J2 - HD Audio Header
The HD audio header supports sample rates ranging from 44.1 to 192 kHz.
The left and right front audio channels provide concurrent independent
stereo sound output (multiple streaming).
Layout and Pin Reference
Connector
• Hirose DF13 series 1.25 mm 10-pin
Part Number: DF13C-10P-1.25V (51)
Matching Connector
• Hirose DF13C 1.25 mm 10-pin
Part Number: DF13C-10S-1.25C
7.5.11 J1 - Legacy RS232 Header
The legacy RS232 header provides port IO addresses defined in the
original PC specification. The legacy UART allows software originally
designed for older PCs to function on the SBC35-427.
Pin Name
1HDAGND
2MICL
3MICR
4HDAGND
5LINEL
6LINER
7HDAGND
8FRONTL
9FRONTR
10 HDA GND
1