Note the following details of the code protection feature on Microchip devices:
QUALITYMANAGEMENTSYSTEM
CERTIFIEDBYDNV
== ISO/TS16949==
•Microchip products meet the specification contained in their particular Microchip Data Sheet.
•Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•Microchip is willing to work with the customer who is concerned about the integrity of their code.
•Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device applications and the like is provided only for your convenience and may be
superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO
REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE,
MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Micro-
chip devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold
harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or
otherwise, under any Microchip intellectual property rights unless otherwise stated.
Trademarks
The Microchip name and logo, the Microchip logo, AnyRate, AVR, AVR logo, AVR Freaks, BitCloud, chipKIT, chipKIT logo, CryptoMemory,
CryptoRF, dsPIC, FlashFlex, flexPWR, Heldo, JukeBlox, KeeLoq, Kleer, LANCheck, LINK MD, maXStylus, maXTouch, MediaLB, megaAVR,
MOST, MOST logo, MPLAB, OptoLyzer, PIC, picoPower, PICSTART, PIC32 logo, Prochip Designer, QTouch, SAM-BA, SpyNIC, SST, SST
Logo, SuperFlash, tinyAVR, UNI/O, and XMEGA are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other
countries.
ClockWorks, The Embedded Control Solutions Company, EtherSynch, Hyper Speed Control, HyperLight Load, IntelliMOS, mTouch, Precision
Edge, and Quiet-Wire are registered trademarks of Microchip Technology Incorporated in the U.S.A.
Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any Capacitor, AnyIn, AnyOut, BodyCom, CodeGuard, CryptoAuthentication,
CryptoAutomotive, CryptoCompanion, CryptoController, dsPICDEM, dsPICDEM.net, Dynamic Average Matching, DAM, ECAN, EtherGREEN,
In-Circuit Serial Programming, ICSP, INICnet, Inter-Chip Connectivity, JitterBlocker, KleerNet, KleerNet logo, memBrain, Mindi, MiWi,
motorBench, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach, Omniscient Code Generation, PICDEM,
PICDEM.net, PICkit, PICtail, PowerSmart, PureSilicon, QMatrix, REAL ICE, Ripple Blocker, SAM-ICE, Serial Quad I/O, SMART-I.S., SQI,
SuperSwitcher, SuperSwitcher II, Total Endurance, TSHARC, USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, and ZENA are
trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated in the U.S.A.
Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries.
GestIC is a registered trademark of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other
countries.
All other trademarks mentioned herein are property of their respective companies.
Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
®
MCUs and dsPIC® DSCs, KEELOQ
®
code hopping
DS50002889A-page 2 2019 Microchip Technology Inc.
Worldwide Sales and Service .....................................................................................38
DS50002889A-page 4 2019 Microchip Technology Inc.
EVB-USB4X12
EVALUATION BOARD
USER’S GUIDE
Preface
NOTICE TO CUSTOMERS
All documentation becomes dated, and this manual is no exception. Microchip tools and
documentation are constantly evolving to meet customer needs, so some actual dialogs
and/or tool descriptions may differ from those in this document. Please refer to our web site
(www.microchip.com) to obtain the latest documentation available.
Documents are identified with a “DS” number. This number is located on the bottom of each
page, in front of the page number. The numbering convention for the DS number is
“DSXXXXXA”, where “XXXXX” is the document number and “A” is the revision level of the
document.
®
For the most up-to-date information on development tools, see the MPLAB
Select the Help menu, and then Topics to open a list of available online help files.
IDE online help.
INTRODUCTION
This chapter contains general information that will be useful to know before using the
USB4712/USB4912. Items discussed in this chapter include:
• Document Layout
• Conventions Used in this Guide
• The Microchip Web SiteThe Microchip Web Site
• Development Systems Customer Change Notification Service
• Customer Support
• Document Revision History
DOCUMENT LAYOUT
This document describes how to use the EVB-USB4x12 Evaluation Board as a
development tool for the USB4712/USB4912 1-Port USB 2.0 automotive hubs. The
manual layout is as follows:
• Chapter 1. “Overview” – This shows a brief description of the EVB-USB4x12
Evaluation Board.
• Chapter 2. “Getting Started” – This includes instructions on how to get started
with the EVB-USB4x12 Evaluation Board.
• Chapter 3. “Hardware Configuration Options” – This provides information
about the EVB-USB4x12 Evaluation Board battery charging features.
• Appendix A. “PCB Layers” – This appendix shows the EVB-USB4x12 Evalua-
tion Board PCB layers.
• Appendix B. “Schematics” – This appendix shows the EVB-USB4x12 Evalua-
tion Board schematics.
• Appendix C. “Bill of Materials” – This appendix includes the EVB-USB4x12
Choice of mutually exclusive
arguments; an OR selection
Represents code supplied by
user
“Save project before build”
4‘b0010, 2‘hF1
any valid filename
[options]
errorlevel {0|1}
var_name...]
void main (void)
{ ...
}
®
IDE User’s Guide
DS50002889A-page 6 2019 Microchip Technology Inc.
Preface
THE MICROCHIP WEB SITE
Microchip provides online support via our web site at www.microchip.com. This web
site is used as a means to make files and information easily available to customers.
Accessible by using your favorite Internet browser, the web site contains the following
information:
• Product Support – Data sheets and errata, application notes and sample
programs, design resources, user’s guides and hardware support documents,
latest software releases and archived software
• General Technical Support – Frequently Asked Questions (FAQs), technical
support requests, online discussion groups, Microchip consultant program
member listing
• Business of Microchip – Product selector and ordering guides, latest Microchip
press releases, listing of seminars and events, listings of Microchip sales offices,
distributors and factory representatives
DEVELOPMENT SYSTEMS CUSTOMER CHANGE NOTIFICATION SERVICE
Microchip’s customer notification service helps keep customers current on Microchip
products. Subscribers will receive e-mail notification whenever there are changes,
updates, revisions or errata related to a specified product family or development tool of
interest.
To register, access the Microchip web site at www.microchip.com, click on Customer
Change Notification and follow the registration instructions.
The Development Systems product group categories are:
• Compilers – The latest information on Microchip C compilers, assemblers, linkers
and other language tools. These include all MPLAB C compilers; all MPLAB
assemblers (including MPASM assembler); all MPLAB linkers (including MPLINK
object linker); and all MPLAB librarians (including MPLIB object librarian).
• Emulators – The latest information on Microchip in-circuit emulators. This
includes the MPLAB REAL ICE and MPLAB ICE 2000 in-circuit emulators.
• In-Circuit Debuggers – The latest information on the Microchip in-circuit
debuggers. This includes MPLAB ICD 3 in-circuit debuggers and PICkit 3 debug
express.
• MPLAB IDE – The latest information on Microchip MPLAB IDE, the Windows
Integrated Development Environment for development systems tools. This list is
focused on the MPLAB IDE, MPLAB IDE Project Manager, MPLAB Editor and
MPLAB SIM simulator, as well as general editing and debugging features.
• Programmers – The latest information on Microchip programmers. These include
production programmers such as MPLAB REAL ICE in-circuit emulator, MPLAB
ICD 3 in-circuit debugger and MPLAB PM3 device programmers. Also included
are non-production development programmers such as PICSTART Plus and
PIC-kit 2 and 3.
CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels:
Customers should contact their distributor, representative or field application engineer
(FAE) for support. Local sales offices are also available to help customers. A listing of
sales offices and locations is included in the back of this document.
Technical support is available through the web site at:
http://www.microchip.com/support
DOCUMENT REVISION HISTORY
RevisionsSection/Figure/EntryCorrection
DS50002889A
(05-29-19)
Initial release
DS50002889A-page 8 2019 Microchip Technology Inc.
Chapter 1. Overview
1.1USB4712/USB4912 GENERAL INTRODUCTION
The USB4712/USB4912 hub controller is a 1-port USB2.0 smart hub controller, which
is fully compliant with the USB2.0 Specification. The 1-port hub supports 480 Mbps
High-Speed (HS), 12 Mbps Full-Speed (FS) and 1.5 Mbps Low-Speed (LS) USB
signaling.
USB4712: The USB4712 is a 1-port retimer hub with AutoFlexConnect technology.
This hub is design for use within automotive systems which require an attached smart
phone to assume the host role when docked to the automotive head unit system.
AutoFlexConnect technology allows this hub to actively seek for a host connection on
both the default upstream or default downstream port. If a host is detected on the
default downstream port, but no host is detected on the default upstream port, then the
hub will automatically reconfigure itself and initiate FlexConnect to allow the host
detected on the default downstream port to enumerate the hub and any devices
attached to the USB4712 default upstream port. This allows a functional role swap
between the head unit and the smart phone to occur with no direct role swap commands issued to the USB4712. This hub also supports BC1.2 battery charging on the
default downstream port.
USB4912: The USB4912 is a 1-port hub with Multi-Host Endpoint Reflector technology.
This hub is designed for use within automotive systems which require an attached
smartphone to assume the host role when docked to the automotive head unit system.
With Multi-Host Endpoint Reflector technology, both the automotive head unit and the
smartphone may operate as USB hosts at the same time while exchanging data. A
command issued from the automotive head unit directed to the USB4912’s internal Hub
Feature Controller device is all that is needed to initiate a Multi-Host Endpoint Reflector
session. This hub also supports BC1.2 battery charging on the downstream port. The
USB4912 also has a secondary ‘remote port’ which can be used to daisy chain additional USB4912 hubs.
The USB4712/USB4912 smart hubs both have an embedded MCU for enabling
advanced features. These features include, hub configuration through upstream USB
interface, USB-to-I
2
C Bridging, USB-to-SPI Bridging, USB-to-GPIO Bridging and more.
EVB-USB4X12
EVALUATION BOARD
USER’S GUIDE
1.2ABOUT EVB-USB4X12
Figure 1-1 shows a rendering of the top side of EVB-USB4x12.
Figure 1-2 shows a rendering of the bottom side of EVB-USB4x12.
FIGURE 1-2:EVB-USB4X12 BOTTOM
DS50002889A-page 10 2019 Microchip Technology Inc.
Overview
The EVB-USB4x12 is a 4-layer RoHS-compliant evaluation board that utilizes the
USB4712/USB4912 to provide a fully functional 1-port hub with battery charging capabilities. The EVB-USB4x12 also features the UCS2114 two channel USB port power
controller. The USB4712/USB4912 may optionally execute firmware from an external
SST26VF016B SPI Flash device included in the PCB. Many configurable options may
be controlled through the MPLAB Connect Configurator tool. The EVB-USB4x12
demonstrates driver compatibility with native Microsoft
Linux® hub drivers.
The EVB-USB4x12 provides the following features:
• USB4712 or USB4912 in a 40-pin QFN RoHS compliant package
• One UCS2114 in a 20-pin QFN RoHS compliant package
• SST26VF016B in a 8-pin SOIC RoHS compliant package
• USB 2.0 compliant (HS, FS, and LS operation); USB pins are 5V tolerant
• Self-powered (external 5V source) or Bus-powered (powered from USB VBUS)
operation
• One USB2.0 Type-A downstream port on EVB-USB4712. Two USB2.0 Type-A
downstream ports on EVB-USB4912
• Battery Charging support (BC1.2 CDP and DCP) on the downstream port (Port 1
of EVB-USB4912)
• Downstream ports support individual port power and over current sense
• MCP1825 on board +3.3V, 1 Amp regulator
• LED indicators for:
- 3.3V board power
- Downstream port VBUS
- Reset
- SPI chip activity
Figure 1-3 shows the block diagram of the EVB-USB4x12.
Concepts and materials available in the following documents may be helpful when
reading this document. Visit www.microchip.com for the latest documentation.
• USB4712 Data Sheet
• USB4912 Data Sheet
• AN2651 - Configuration of Microchip USB47xx/USB49xx
TABLE 1-1:ACRONYMS AND DEFINITIONS
AcronymDefinition
BC1.2 specification which is capable of delivering up to
1.5A of charging at 5V along with USB data.
BC1.2 specification which is capable of delivering up to
1.5A of charging at 5V without USB data capabilities.
device should be attached to.
and sound data from a video capable device to a monitor
or display.
BC1.2Latest USB-IF specified USB battery charging standard
CDPCharging Downstream Port. A type of port defined in the
DCPDedicated Charging Port. A type of port defined in the
DFPDownstream Facing Port. On a hub, this is a port that a
DPDisplayPort. An interface used to connect transit display
EVBEvaluation Board
ICIntegrated Circuit
DS50002889A-page 12 2019 Microchip Technology Inc.
TABLE 1-1:ACRONYMS AND DEFINITIONS (CONTINUED)
AcronymDefinition
OTPOne-Time Programmable Memory
SDPStandard Downstream Port. A type of port defined in the
BC1.2 specification which is capable of delivering up to
500 mA of charging at 5V along with USB data.
Type-ANon-reversible USB connector, used for DFP ports only
USB2.0Universal Serial Bus Specification 2.0, released April
2000 by USB-IF
USBUniversal Serial Bus, a communication technology speci-
fication developed by the USB-IF.
USB-IFUSB Integrators Forum, a collection of corporate spon-
sored members responsible for developing USB specifications
UFPUpstream Facing Port. On a hub, this is a port that should
connect to a USB host
VBUSRefers to the 5V-20V power conductor inside of a Type-C
cable, the power pins on a USB connector, or the USB
power traces on a PCB
DS50002889A-page 14 2019 Microchip Technology Inc.
2.1INTRODUCTION
The Microchip EVB-USB4x12 is designed for flexible configuration solutions. It can be
configured via default internal register settings, via a downloadable external firmware
to an onboard SPI Flash, or via SMBus.
Microchip provides a comprehensive software programming tool, MPLAB Connect
(MPLABC), for configuring USB4712/USB4912 functions, registers, and OTP memory.
USB4712/USB4912 requires MPLABC version 2.3.0 or greater.
For additional information on the MPLABC programming tool, refer to Software Libraries within the Microchip USB4712/USB4912 product page at www.microchip.com/USB4712 or www.microchip.com/USB4912
2.2KIT CONTENTS
The EVB-USB4x12 Evaluation Kit includes on the EVB-USB4x12 PCB. This board may
be used with standard USB cabling. The kit also includes one USB Type-A to USB
Mini-B cable.
EVB-USB4X12
EVALUATION BOARD
USER’S GUIDE
Chapter 2. Getting Started
2.3QUICK START
2.3.1Power Source
A power supply is not included with EVB-USB4x12. This board may be powered
directly from VBUS of the USB host, VBUS from the host connected to downstream
port 1, or from an external 5V power supply, which may be connected to J2.
If powering the PCB from a USB host’s VBUS, ensure shunts are installed on J4
between pins [1-2] and [3-4].
If powering the PCB from an external 5V power supply, remove all shunts on J4.
2.3.2Default Firmware
By default, the hub operates from internal ROM FW image plus the standard factory-programmed OTP configuration contents. No firmware image is included inside of
the on-board SPI Flash device.
A firmware may be loaded by onto the onboard SPI Flash via USB by using the MPLAB
Connect SPI Flash programming feature. There is no need to program the SPI Flash
before operating the EVB. A special firmware image is only required for systems which
require custom functionality not included in the internal ROM options. D2 labeled “SPI
ACTIVE” should illuminate bright blue while the hub is executing the firmware from the
external SPI Flash.
Note:If you wish to execute firmware from the internal ROM image after a firmware image
has been programmed to the on-board SPI Flash, install a shunt on J6 to disable
access to the SPI Flash device.
A USB2.0 or host must be connected to the upstream USB Mini-B port J1. A Type-A to
Mini-B cable or a Type-C to Mini-B cable is required to connect the board to a standard
USB host.
2.3.4Downstream Port Connections
Once host connection is established on the upstream host port and the host issues the
command to the hub to enable downstream port power, devices may be connected to
the downstream port(s) to begin communicating with the USB host.
Downstream port 1 is a standard USB Type-A receptacle. This port includes a 5V
UCS2114 power switch capable of delivering up to 3A of current before over-current
protection is triggered. Diode D4 labeled “VBUS P1” will illuminate when VBUS power
is applied to the port.
Downstream port 2 is available on USB4912 only, and includes a standard USB Type-A
receptacle. This port is intended to connect another hub tier. It is not intended to operate as a standard USB port as it does not have individual power enable and overcurrent
detection functionality. This port is also powered from the 5V UCS2114 power switch
device and is ‘always on’.
DS50002889A-page 16 2019 Microchip Technology Inc.
Chapter 3. Hardware Configuration Options
3.1HARDWARE CONFIGURATION OPTIONS
3.1.1Configuration
3.1.1.1RUNNING FROM INTERNAL ROM FIRMWARE
By default, the hub firmware of the USB4712/USB4912 executes from internal ROM
memory.
To force the hub to boot from the internal ROM, install a shunt onto J6.
3.1.1.2EXTERNAL SPI FLASH
The USB4712/USB4912 may optionally execute firmware from an external SPI Flash.
A firmware image may be programmed to the external SPI Flash via the MPLAB Connect Configurator tool. After programming and executing a firmware image from an
external SPI Flash, the firmware revision can be quickly identified by enumerating the
EVB-USB4x12 to a USB host PC and inspecting the USB Device ID (bcdDevice) of the
USB2.0 hub. See Figure 3-1.
In order to boot from SPI Flash properly, the following conditions must be met:
• A valid firmware image must be programmed into the SPI Flash device
• Remove any shunt installed on J6
EVB-USB4X12
EVALUATION BOARD
USER’S GUIDE
FIGURE 3-1:COMPONENTS CRITICAL FOR EXTERNAL SPI FLASH
FIRMWARE EXECUTION
SPI DISABLE
HEADER
SPI ACTIVITY
LED
(D2)
The recommended sequence for reprogramming the SPI firmware is:
1. Install a shunt onto J6 to force booting from internal ROM memory.
2. Reset the USB4712/USB4912.
3. Connect EVB-USB4x12 to a USB host PC with a USB Type-A to Type-C cable.
4. Boot the MPLAB Connect software and select the new firmware image.
The EVB-USB4x12 must be powered externally through the J1 4-Pin DIN connector,
or through the J5 terminal block.
The supported input voltage range for the base board is 12V to 24V. By default, the supplied PM-PD requires an input of 24V to properly regulate up to 20V volts to the
upstream PD ports. The recommend input voltage is 24V unless an alternate PM-PD
and/or a specialized hub firmware is used.
A power supply is not included with the EVB-USB4x12.
3.1.3Board Power
The board includes LED indicators to indicate if all board power nets are working and
includes test loops for quick measurements. The location of these LEDs and test loops
are shown in Figure 3-2 below.
FIGURE 3-2:BOARD POWER LEDS AND TEST LOOPS)
GROUND
TEST
POINTS
TP1
TP5
TP6
3.3V LED
INDICATOR
D1
3.3V
TEST
POINT
TP2
3.1.4Reset
An on-board reset button (SW1) is included, and this resets the USB4712/USB4912
when pressed. A red LED indicator (D3) also illuminates when the reset signal is
asserted (active low). The locations of these components are shown in Figure 3-3
below.
FIGURE 3-3:RESET BUTTON LOCATION
RESET LED
D3
RESET BUTTON
SW1
DS50002889A-page 18 2019 Microchip Technology Inc.
Hardware Configuration
3.1.5USB Ports
The following is a list of capabilities for each USB port on the EVB-USB4x12.
• Port 0:
- Data upstream port (connects to a USB host)
- USB2.0 Mini-B receptacle
- USB2.0 data connectivity
• Port 1:
- Data downstream port with AutoFlex (USB4712) or multi-host endpoint reflec-
tor (USB4912)
- USB2.0 Type-A receptacle
- USB2.0 data connectivity
- BC1.2 charging at up to 7.5W (5V at 1.5A)
• Port 2:
- Downstream Type-A receptacle
- USB2.0 data connectivity
Figure 3-4 shows the top view of the EVB-USB4x12.
FIGURE 3-4:EVB-USB4X12 USB PORTS
PORT
0
PORT
PORT
1
3.1.6Spare GPIOs
The EVB-USB4x12 includes 4 GPIOs for USB to GPIO or SMBus/I
use. These pins are connected to J5 1x6 header. See Figure 3-5.
An SMBus/I2C slave interface is available to configure or retrieve status from the
USB4712/USB4912 hub. Pull-up resistors must be sensed by the hub at power on in
order for the SMBus/I
sensed as high upon power-on/reset, the SMBus/I
Figure 3-6.
FIGURE 3-6:USB TO SMBUS/I
2
C slave interface to be active. If both SDA and SCL are not
2
C SLAVE HEADER LOCATIONS
2
C slave interface is disabled. See
SLAVE DATA
(J5-5)
SLAVE CLOCK
(J5-6)
3.1.8USB to SMBus/I2C Master
A USB to SMBus/I2C master interface is available to allow for the USB host to read or
write data to an attached SMBus/I
nected to the SMBus/I
2
C bus and is address 57h – 1010_111(r/w). An optional external
slave device may be attach to the board through fly wires by connected to TP3 (DAT)
and TP4 (CLK).
2
The USB to SMBus/I
C feature may be tested with the MPLAB Connect Configurator
tool, available from the Microchip website. See Figure 3-7.
2
C slave device. The on-board UCS2114 is con-
DS50002889A-page 20 2019 Microchip Technology Inc.
Hardware Configuration
FIGURE 3-7:USB TO SMBUS/I2C MASTER HEADER LOCATIONS
MASTER
DATA
(TP3)
MASTER
CLOCK
(TP4)
UCS2114
(U2)
3.1.9LED Indicators
Table 3-1 describes the LEDs included on the PCB.
TABLE 3-1:EVB-USB4X12 LED DESCRIPTIONS
Reference
Designator
D13V3Illuminates when board 3.3V net is powered on
D2SPI ACTIVESPI Activity indicator LED. Illuminates when the SPI Chip
D3RESETReset indicator LED. Illuminates when the RESET_N signal is
D4VBUS P1Downstream Port 1 VBUS indicator. Illuminates when VBUS
Microchip Technology, Inc.
USB/Network Group - UNG
www.Microchip.com
Schematics
DS50002889A-page 30 2019 Microchip Technology Inc.
1
1
2
2
3
3
4
4
5
5
6
6
DD
CC
BB
AA
Page Title:
Project Name:
USB Ports
EVB-USB4x12
PN:
UNG_8184
Description:
Date:Size:Sheet of Rev
B34B0
7/16/2018
Designer:
Andrew Rogers
EVB-USB4x12- Evaluation Board
Designedwith
Altium.com
USB Ports
3V3
330R
R3
"PORT3"
0.1uF
C3
USB-A Downstream Port 1
EARTH_P1
PORT1 VBUS
3V3
47uF
C1
1k
DNP
R1
1k
R4D1
0.1uF
C2
VBUS
1
GND
4
D-
2
D+
3
VBUS
G
D+
0
USB2.0 STD-A FEMALE
J1
USB-IF TID 60001133
EARTH_P1EARTH_P0
3V3
330R
R6
EARTH_P0
0.1uF
C5
200k
R5
100k
R2
2.2uF
C4
PORT0
Mini-B Upstream Port
VBUS
1
GND
4
D-
2
D+
3
VBUS
G
D-
0
USB2.0 STD-A FEMALE
J3
Daisy Chain Port (USB4912 Only)
USBP1_N2
USBP1_P2
USBP0_N 2
USBP0_P 2
VBUS_DET 2
USB_SEC_N2
USB_SEC_P2
PWR_EN1
1
GND
2
COMM_ILIM
3
VBUS1
4
VBUS1
5
VS210VS2
9
VDD
8
VS17VS1
6
VBUS2
12
VBUS2
11
BOOST
13
GND
14
PWR_EN2
15
ALERT2
16
GND17SMDATA18SMCLK
19
ALERT1
20
W
R_
EN1
N
CO
M_ILI
M
VBUS1VBUS1VBUS2
VBUS2
OOS
T
N
W
R_
N2
N
UCS2114-1-V/LX
U2
0R
R10
VBUS2
47uF
C7
47uF
C9
47uF
C8
47uF
C10
5V
0.1uF
C6
5V
10k
R8
5V
Configuration: 3.2A Limit per port
SMBus Enabled(connected to USB Hub)
VBUS1
0R
DNP
R7
33k 1%
R9
10k
R11
5V
VBUS2
PRTCTL12
VBUS1
Port Power Switch
VBUS_UP 4
VBUS_UP Can optionally supply power to the entire PCB.
See the "Voltage Regulators" sheet for the jumper option
to select between "VBUS_UP" power or external "VBAT" supply.
SMB2_DAT2
SMB2_CLK2
4.7k
R12
4.7k
R13
3V3
24
VCC
5
GND
3
VCC
GND
U1
74LVC1G14GW,125
ID
4
VBUS
1
GND
5
D-
2
D+
3
0
USB2.0 MINI-BFEMALE
J2
I2C Communicationto UCS2114 is optional and not required for normal operation
VBUS_UP Can optionally supply power to the entire PCB.
If used, ensure that the VBUS source has sufficient current
capacity to power the PCB + all connected downstream devices.