2017 Microchip Technology Inc. DS50002587A
EVB-KSZ9897
Gigabit Ethernet Switch
Evaluation Board
User’s Guide
DS50002587A-page 2 2017 Microchip Technology Inc.
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© 2017, Microchip Technology Incorporated, All Rights Reserved.
ISBN: 978-1-5224-1527-5
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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
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Microchip received ISO/TS-16949:2009 certification for its worldwide
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are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
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YSTEM
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2017 Microchip Technology Inc. DS50002587A-page 3
EU Declaration of Conformity
This declaration of conformity is issued by the manufacturer.
The development/evaluation tool is designed to be used for research and development in a laboratory environment. This
development/evaluation tool is not a Finished Appliance, nor is it intended for incorporation into Finished Appliances that are
made commercially available as single functional units to end users under EU EMC Directive 2004/108/EC and as supported by
the European Commission's Guide for the EMC Directive 2004/108/EC (8th February 2010).
This development/evaluation tool complies with EU RoHS2 Directive 2011/65/EU.
This development/evaluation tool, when incorporating wireless and radio-telecom functionality, is in compliance with the
essential requirement and other relevant provisions of the R&TTE Directive 1999/5/EC and the FCC rules as stated in the
declaration of conformity provided in the module datasheet and the module product page available at www.microchip.com.
For information regarding the exclusive, limited warranties applicable to Microchip products, please see Microchip’s standard
terms and conditions of sale, which are printed on our sales documentation and available at www.microchip.com.
Signed for and on behalf of Microchip Technology Inc. at Chandler, Arizona, USA.
Object of Declaration: EVB-KSZ9897
EVB-KSZ9897 User’s Guide
DS50002587A-page 4 2017 Microchip Technology Inc.
NOTES:
EVB-KSZ9897
EVALUATION BOARD
USER’S GUIDE
2017 Microchip Technology Inc. DS50002587A-page 5
Table of Contents
Preface ........................................................................................................................... 7
Introduction............................................................................................................ 7
Document Layout .................................................................................................. 7
Conventions Used in this Guide ............................................................................ 8
The Microchip Web Site ........................................................................................ 9
Development Systems Customer Change Notification Service ............................ 9
Customer Support ................................................................................................. 9
Document Revision History ................................................................................. 10
Chapter 1. Overview
1.1 Introduction ................................................................................................... 11
1.2 References ................................................................................................... 12
1.3 Terms and Abbreviations ............................................................................. 12
Chapter 2. Board Details & Configuration
2.1 Power ........................................................................................................... 13
2.1.1 +5V Power ................................................................................................. 13
2.2 Resets .......................................................................................................... 13
2.2.1 Power-on Reset ......................................................................................... 13
2.3 Clock ............................................................................................................ 13
2.4 Configuration ................................................................................................ 14
2.4.1 Switch Settings .......................................................................................... 15
2.4.2 Jumper Settings ........................................................................................ 15
2.4.3 SPI, I2C and MIIM Management ............................................................... 16
2.5 Using the EVB-KSZ9897 .............................................................................. 18
2.6 Mechanicals ................................................................................................. 18
Appendix A. EVB-KSZ9897 Evaluation Board
A.1 Introduction .................................................................................................. 19
Appendix B. EVB-KSZ9897 Evaluation Board Schematics
B.1 Introduction .................................................................................................. 21
Appendix C. Bill of Materials (BOM)
C.1 Introduction .................................................................................................. 27
Worldwide Sales and Service .................................................................................... 32
EVB-KSZ9897 User’s Guide
DS50002587A-page 6 2017 Microchip Technology Inc.
NOTES:
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EVALUATION BOARD
USER’S GUIDE
2017 Microchip Technology Inc. DS50002587A-page 7
Preface
INTRODUCTION
This chapter contains general information that will be useful to know before using
EVB-KSZ9897. Items discussed in this chapter include:
•Document Layout
•Conventions Used in this Guide
•The Microchip Web Site
•Development Systems Customer Change Notification Service
•Customer Support
•Document Revision History
DOCUMENT LAYOUT
This document describes how to use the EVB-KSZ9897 as a development tool for the
Microchip EVB-KSZ9897 gigabit Ethernet switch. The manual layout is as follows:
•Chapter 1. “Overview” – Shows a brief description of the EVB-KSZ9897.
•Chapter 2. “Board Details & Configuration” – Includes details and instructions
for using the EVB-KSZ9897.
•Appendix A. “EVB-KSZ9897 Evaluation Board” – This appendix shows the
EVB-KSZ9897.
•Appendix B. “EVB-KSZ9897 Evaluation Board Schematics” – This appendix
shows the EVB-KSZ9897 schematics.
•Appendix C. “Bill of Materials (BOM)” – This appendix includes the
EVB-KSZ9897 Bill of Materials (BOM).
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® IDE online help.
Select the Help menu, and then Topics to open a list of available online help files.
EVB-KSZ9897 User’s Guide
DS50002587A-page 8 2017 Microchip Technology Inc.
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description Represents Examples
Arial font:
Italic characters Referenced books MPLAB® IDE User’s Guide
Emphasized text ...is the only compiler...
Initial caps A window the Output window
A dialog the Settings dialog
A menu selection select Enable Programmer
Quotes A field name in a window or
dialog
“Save project before build”
Underlined, italic text with
right angle bracket
A menu path File>Save
Bold characters A dialog button Click OK
A tab Click the Power tab
N‘Rnnnn A number in verilog format,
where N is the total number of
digits, R is the radix and n is a
digit.
4‘b0010, 2‘hF1
Text in angle brackets < > A key on the keyboard Press <Enter>, <F1>
Courier New font:
Plain Courier New Sample source code #define START
Filenames autoexec.bat
File paths c:\mcc18\h
Keywords _asm, _endasm, static
Command-line options -Opa+, -Opa-
Bit values 0, 1
Constants 0xFF, ‘A’
Italic Courier New A variable argument file.o, where file can be
any valid filename
Square brackets [ ] Optional arguments mcc18 [options] file
[options]
Curly brackets and pipe
character: { | }
Choice of mutually exclusive
arguments; an OR selection
errorlevel {0|1}
Ellipses... Replaces repeated text var_name [,
var_name...]
Represents code supplied by
user
void main (void)
{ ...
}
Preface
2017 Microchip Technology Inc. DS50002587A-page 9
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 nonproduction development programmers such as PICSTART Plus and
PIC-kit 2 and 3.
CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels:
• Distributor or Representative
• Local Sales Office
• Field Application Engineer (FAE)
• Technical Support
EVB-KSZ9897 User’s Guide
DS50002587A-page 10 2017 Microchip Technology Inc.
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
Revision A (March 2017)
• Initial Release of this Document.
EVB-KSZ9897
EVALUATION BOARD
USER’S GUIDE
2017 Microchip Technology Inc. DS50002587A-page 11
Chapter 1. Overview
1.1 INTRODUCTION
The EVB-KSZ9897 evaluation board features three Gigabit Ethernet products,
KSZ9897R, KSZ9031RNX and LAN7801. The KSZ9897R is a seven-port managed
gigabit Ethernet switch. It has five 10BASE-Te/100BASE-TX/1000BASE-T physical
layer transceivers (PHYs) and associated MAC units, and two MAC ports with individ-
ually configurable RGMII/MII/RMII interfaces. These two ports can be used for direct
connection to a host Microprocessor or Microcontroller, another Ethernet switch or an
Ethernet PHY.
KSZ9031 is a single chip 10/100/1000 Mbps IEEE 802.3 compliant Ethernet PHY. This
demonstration board features the RGMII variant, KSZ9031RNX, of the KSZ9031 fam-
ily. This feature-rich device offers diagnostic features, such as, LinkMD®, Parametric
NAND tree and loopback functions to facilitate system bring-up and debugging in prod-
uct testing and deployment. The on-chip termination resistors for the four differential
pairs reduce the total board cost.
LAN7801 is a USB 3.1 to 10/100/1000 Gigabit Ethernet bridge with integrated OTP and
EEPROM controller. The internal USB controller and USB PHY are compliant with the
USB 3.1 Gen 1 SuperSpeed standard that implements Control, Interrupt, Bulk-in, and
Bulk-out USB Endpoints. The Ethernet controller is compliant with the IEEE 802.3,
IEEE 802.3u, IEEE 802.3ab, and 802.3az (Energy Efficient Ethernet) standards. The
device provides multiple power management features, including Energy Efficient Ether-
net (IEEE 802.3az), support for Microsoft's Always On Always Connected (AOAC), and
“Magic Packet”, “Wake On LAN”, and “Link Status Change” wake events.
An external clock, DSC400, is used on this board to provide very low jitter clock pulses
to the KSZ9897, LAN7801 and KSZ9031 Gigabit Ethernet controllers. The DSC400 is
a four output crystal-less™ clock generator. It utilizes MEMS technology to provide
excellent jitter and stability while providing excellent shock and vibration immunity. The
device outputs wide frequency range of 2.3 MHz to 460 MHz with high noise rejection
of -50 dbC. The DSC400 provides two independent select lines for choosing between
two sets of pre-configured frequencies per bank. It also has two Output Enable pins to
allow for enabling and disabling outputs.
On this board, the KSZ9897R Ethernet switch's five ports, 1 through 5, are connected
directly to RJ45 Ethernet jacks with integrated magnetics which are available to use
with any Ethernet devices. The rest of the two MAC ports are configured as RGMII
interfaces. Port 6 is connected to a KSZ9031 Gigabit Ethernet PHY and an RJ45 Ether-
net jack with integrated magnetics and port 7 is connected to a LAN7801 USB-to-Ether-
net bridge and a USB connector.
The scope of this document is to describe the EVB-KSZ9897 evaluation board setup,
which includes RGMII, SPI and I2C interface and corresponding jumper configurations.
A simplified block diagram of the board is shown in Figure 1-1.
EVB-KSZ9897 User’s Guide
DS50002587A-page 12 2017 Microchip Technology Inc.
FIGURE 1-1: KSZ9897 BLOCK DIAGRAM
1.2 REFERENCES
Concepts and material available in the following documents will be helpful when read-
ing this document. Visit www.microchip.com for the latest documentation.
• KSZ9897R Data Sheet
• KSZ9031RNX Data Sheet
• LAN7801 Data Sheet
• EVB-KSZ9897 Schematic
• DSC400 Data Sheet
1.3 TERMS AND ABBREVIATIONS
EVB - Evaluation Board
MII - Media Independent Interface
MIIM - Media Independent Interface Management, also known as MDIO/MDC
RGMII - Reduced Gigabit Media Independent Interface
I2C - Inter Integrated Circuit
SPI - Serial Protocol Interface
PHY - Physical Transceiver
EVB-KSZ9897
EVALUATION BOARD
USER’S GUIDE
2017 Microchip Technology Inc. DS50002587A-page 13
Chapter 2. Board Details & Configuration
This section includes sub-sections on the following KSZ9897 details:
•Power
• Resets
• Clock
• Configuration
• Mechanicals
2.1 POWER
2.1.1 +5V Power
A 5V/2A power supply should be connected to J7 on the board. The SW2 switch must
be in the ON position to power the board. The F1 fuse is provided on the board for the
over voltage protection.
2.2 RESETS
2.2.1 Power-on Reset
There are three jumpers, J15, J21 and J23, available for configuring the various reset
options for the chips. Unless experimentation with reset is required, it is suggested to
use the default configurations highlighted in bold text in the tables below. With these
default settings, pressing the SW1 reset button will reset all three devices (KSZ9897,
KSZ9031 and LAN7801). By changing the jumpers, the effect of SW1 can be limited to
a subset of the three devices.
2.3 CLOCK
The evaluation board utilizes an external clock, DSC400, which provides 25 MHz
25 ppm clock to the KSZ9897, LAN7801 and KSZ9031. It also provides 125 MHz to the
LAN7801.
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DS50002587A-page 14 2017 Microchip Technology Inc.
2.4 CONFIGURATION
The following sub-sections describe the various board features and configuration set-
tings. A top view of the KSZ9897 is shown in Figure 2-1.
FIGURE 2-1: KSZ9897 TOP VIEW WITH CALLOUTS
KSZ9897
RJ45
(with
Magnetics)
Port5Port1Port2Port3Port4Port6
KSZ9031
LAN7801
Power
Strap
Switch
LAN7801
GPIO
KSZ9897Port6
RGMIIExternal
Access
USB EEPROM
KSZ9031
MIIM
External
Access
KSZ9897Port7
RGMIIExternal
Access
Clock
AARDVARK/SPI/
I2CInterface
Board Details & Configuration
2017 Microchip Technology Inc. DS50002587A-page 15
2.4.1 Switch Settings
SW4 is an eight-position switch which controls many of the KSZ9897 configuration
strap options. The KSZ9897 samples these signals at the rising edge of RESET_N to
determine some internal settings. Following reset, the configuration of these switches
is irrelevant. For initial bring-up, leave most switches in the OFF/OPEN position.
2.4.1.1 KSZ9897 MANAGEMENT INTERFACE MODE
The management interface can be configured to be SPI, I2C or MIIM (a.k.a.
MDC/MDIO). This is controlled by switches 1 and 7 of SW4.
Tab le 2 -1 details the switch configuration for the management interface mode.
2.4.1.2 OTHER SWITCH SETTINGS
Please refer the device data sheet for the detailed configuration strap settings.
2.4.2 Jumper Settings
Tab le 2 -2 , Ta ble 2 -3 and Tab le 2- 4 describe the jumper settings. The preferred config-
uration is shown in bold text.
TABLE 2-1: MANAGEMENT INTERFACE MODE
SW4.7 (LED4_1) SW4.1(LED3_1) Mode
On On MDIO
On Off I2C
Off Don’t Care SPI
TABLE 2-2: TWO-PIN JUMPERS
Jumper Label Description Open Closed
J16 P6 100 Mbps KSZ9897 Port 6 RGMII speed configu-
ration strap setting. The setting of this
jumper takes effect only after reset. This
setting must match the actual link
speed of port 6.
The KSZ9897 port 6 speed can also be
set via the SPI or I2C interface by writ-
ing to registers 0x6300 (bit 4) and
0x6301 (bit 6). See the data sheet for
details. This method is required when
the port 6 link speed is 10 Mbps.
1000 Mbps 100 Mbps
J18 IBA Enable Enable KSZ9897 In-Band-Manage-
ment (IBA) (Configuration strap)
Disabled
(Default)
Enabled
J28 EEPROM CS Enable external EEPROM for LAN7801 Disabled Enabled
TABLE 2-3: THREE-PIN JUMPERS
Jumper Label Description Jumper 1-2 Jumper 2-3
J6 PWR SEL Board power source: 5V barrel
connector or USB
Power from
barrel jack
USB powered
(not recom-
mended)
J8 VDET SEL LAN7801 USB Vbus detect Board +3.3V Vbus from
USB connec-
tor (Default)
J11 PME Mode
SEL
LAN7801 PME Mode input pin High
(Default)
Low
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2.4.3 SPI, I2C and MIIM Management
External access to the KSZ9031 MIIM bus is available via header J17 as outlined in the
table above. External access to the KSZ9897 (either SPI, I2C or MIIM) is available via
header J22 as outlined in Tab le 2 -4 . If both connections are needed simultaneously, it
will be necessary to remove resistor R95. Please visit Tab le 2- 5 and Table 2-6 for I2C
and SPI connections.
J21 LAN7801
RESET SEL
LAN7801 Reset input source Master SW1
& RC Circuit
(Default)
Alternate RC
circuit
J23 KSZ9897
RESET SEL
KSZ9031 Reset input source Master SW1 &
RC circuit
LAN7801
Reset output
(Default)
J24 KSZ9897
MDIO enable
Install these jumpers to allow the KSZ9897 MIIM interface
(together with the KSZ9031 MIIM interface) to be accessible from
the LAN7801 or from J17. If the KSZ9897 management port is con-
figured for SPI or I2C, do not install these jumpers.
J25 KSZ9897
MDC enable
TABLE 2-4: MULTI-PIN HEADERS
Jumper Label Description Configuration
J15 KSZ9031 RESET
SEL
KSZ9031 Reset input
source 3x2 header
Install a jumper on one of the
three pairs only:
1-2: LAN7801 Reset output
(Default)
3-4: Master SW1 & RC circuit
5-6: Alternate RC circuit
J17 MDIO/MDC ISO KSZ9031 MIIM
(MDC/MDIO) external
access and jumpers 4hx2
header
Install jumpers 3-4 and 5-6 to
access the KSZ9031 MIIM bus
from the LAN7801. (Not cur-
rently available)
For external access to KSZ9031
MIIM bus, install only jumper
2-4, and use pins 1,3,5 and 7
for external connection.
J14 GPIO LAN7801 GPIO pins 8x1
header
Provides access to the GPIO
pins of the LAN7801. No jump-
ers.
J22 AARDVARK KSZ9897 SPI/I2C header
for external access 5x2
header
Supports Aardvark (TTP100005
- Total Phase Aardvark I2C/SPI
Host Adapter) and Cheetah
(TTP100004 - Total Phase
Cheetah SPI Host Adapter)
from Totalphase.
TABLE 2-5: I2C
I2C Signal Connector Pin
SDA J22.3 and/or J22.8
SCL J22.7 (R126 not currently installed)
GND J22.2 and/or J22.10
TABLE 2-3: THREE-PIN JUMPERS (CONTINUED)
Jumper Label Description Jumper 1-2 Jumper 2-3
Board Details & Configuration
2017 Microchip Technology Inc. DS50002587A-page 17
FIGURE 2-2: SPI/AARDVARK HEADER
TABLE 2-6: SPI
SPI Signal Connector Pin
MISO J22.5
MOSI J22.8
SCK J22.7
SS J22.9
GND J22.2 and/or J22.10
Note: Communication formats and register details are provided in the device data
sheets. Note that SPI or I2C provide access to all KSZ9897 registers, but
MIIM does not. It only provides access to the PHY registers of the switch.
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DS50002587A-page 18 2017 Microchip Technology Inc.
2.5 USING THE EVB-KSZ9897
The EVB-KSZ9897 board can be used to connect up to 7 Ethernet devices using 6
Ethernet ports and 1 USB port.
For example, connect a PC (PC1) on port 1 and another PC (PC2) to port 2. Configure
both PCs for STATIC IP address using the Ethernet interface’s properties windows.
Then, run a simple PING command to test communication between the two PCs.
Lastly, connect PC2 to the USB port, port 7, on the board.
A user can access the KSZ9897 switch's internal registers by connecting Aardvark
I2C/SPI host adapter to jumper 22. The adapter is available to purchase from
MicrochipDirect.com web site (part number TTP100005).
2.6 MECHANICALS
FIGURE 2-3: KSZ9897 MECHANICAL DIMENSIONS
EVB-KSZ9897
EVALUATION BOARD
USER’S GUIDE
2017 Microchip Technology Inc. DS50002587A-page 19
Appendix A. EVB-KSZ9897 Evaluation Board
A.1 INTRODUCTION
This appendix shows the EVB-KSZ9897 Evaluation Board.
FIGURE A-1: EVB-KSZ9897 EVALUATION BOARD
EVB-KSZ9897 User’s Guide
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NOTES:
2017 Microchip Technology Inc. DS50002587A-page 21
EVB-KSZ9897
EVALUATION BOARD
USER’S GUIDE
Appendix B. EVB-KSZ9897 Evaluation Board Schematics
B.1 INTRODUCTION
This appendix shows the EVB-KSZ9897 Evaluation Board Schematics.
EVB-KSZ9897 User’s Guide
DS50002587A-page 22 2017 Microchip Technology Inc.
FIGURE B-1: KSZ9897 FUNCTIONAL
LED4_13
LED4_03
LED5_03
LED5_13
LED2_13
LED2_03
LED1_13
LED1_03
6.04k
1%
R108
Strapping Options
LED1_0
LED1_1
LED2_0
LED2_1
LED3_0
LED3_1
LED4_0
LED4_1
LED5_0
LED5_1
KSZ9897R
TXRX1P_A
1
TXRX1M_A
2
TXRX1P_B
4
TXRX1M_B
5
TXRX1P_C
6
TXRX1M_C
7
TXRX1P_D
8
TXRX1M_D
9
TXRX2P_A
12
TXRX2M_A
13
TXRX2P_B
15
TXRX2M_B
16
TXRX2P_C
17
TXRX2M_C
18
TXRX2P_D
20
TXRX2M_D
21
TXRX3P_A
24
TXRX3M_A
25
TXRX3P_B
26
TXRX3M_B
27
TXRX3P_C
28
TXRX3M_C
29
TXRX3P_D
31
TXRX3M_D
32
TXRX4P_A
34
TXRX4M_A
35
TXRX4P_B
37
TXRX4M_B
38
TXRX4P_C
39
TXRX4M_C
40
TXRX4P_D
42
TXRX4M_D
43
TX_CLK6/REFCLKI6 48
TX_EN6/TX_CTL6 49
TX_ER6 50
COL6 51
TXD6_3 52
TXD6_2 53
TXD6_1 54
TXD6_0 55
RX_CLK6/REFCLKO6 57
RX_DV6/CRS_DV6/RX_CTL6 58
RX_ER6 59
CRS6 60
RXD6_3 62
RXD6_2 63
RXD6_1 64
RXD6_0 65
TX_CLK7/REFCLKI7 66
TX_EN7/TX_CTL7 67
TX_ER7 68
COL7 69
TXD7_3 70
TXD7_2 71
TXD7_1 72
TXD7_0 73
RX_CLK7/REFCLKO7 75
RX_DV7/CRS_DV7/RX_CTL7 76
RX_ER7 78
CRS7 79
RXD7_3 80
RXD7_2 81
RXD7_1 82
RXD7_0 83
TXRX5P_A
112
TXRX5M_A
113
TXRX5P_B
115
TXRX5M_B
116
TXRX5P_C
117
TXRX5M_C
118
TXRX5P_D
120
TXRX5M_D
121
LED4_0
85
LED4_1
86
LED3_0
88
LED3_1
89
LED2_0
91
LED2_1
92
LED5_0
102
LED5_1
103
LED1_0
105
LED1_1
106
MII/RMII/RGMII
CLK SPI
CONTROL
PME_N 93
INTRP_N 94
CLKO_25__125 95
RESET_N 96
SDO 97
SDI/SDA/MDIO 98
SCS_N 100
SCL/MDC 101
XO 125
XI 126
ISET 127
U3A
XO
PHY_INT_N
PME_N
P1_TXRXA_P3
P1_TXRXA_N3
P1_TXRXB_P3
P1_TXRXB_N3
P1_TXRXC_P3
P1_TXRXC_N3
P1_TXRXD_P3
P1_TXRXD_N3
P2_TXRXA_P3
P2_TXRXA_N3
P2_TXRXB_P3
P2_TXRXB_N3
P2_TXRXC_P3
P2_TXRXC_N3
P2_TXRXD_P3
P2_TXRXD_N3
LED3_13
LED3_03
P3_TXRXA_P3
P3_TXRXA_N3
P3_TXRXB_P3
P3_TXRXB_N3
P3_TXRXC_P3
P3_TXRXC_N3
P3_TXRXD_P3
P3_TXRXD_N3
P4_TXRXA_P3
P4_TXRXA_N3
P4_TXRXB_P3
P4_TXRXB_N3
P4_TXRXC_P3
P4_TXRXC_N3
P4_TXRXD_P3
P4_TXRXD_N3
P5_TXRXA_P3
P5_TXRXA_N3
P5_TXRXB_P3
P5_TXRXB_N3
P5_TXRXC_P3
P5_TXRXC_N3
P5_TXRXD_P3
P5_TXRXD_N3
(default = all LEDs low)
P6_TXD3 4
P6_TXD2 4
P6_TXD1 4
P6_TXD0 4
P6_RXD3 4
P6_RXD2 4
P6_RXD1 4
P6_RXD0 4
P7_TXD3 5
P7_TXD2 5
P7_TXD1 5
P7_TXD0 5
P7_RXD3 5
P7_RXD2 5
P7_RXD1 5
P7_RXD0 5
1
42
3
SW1
VDDIO2v5
"SW Reset"
1k
R40
1k
R39
KSZ9897_25MHZ 5
0R
R106
XI 0R
DNP
R102
0R
DNP
R105
MISO
KSZ_RESET_N
P6_TX_CTL 4
P6_TXC 4
P6_RX_CTL 4
P6_RXC 4
P7_TX_CTL 5
P7_TXC 5
P7_RX_CTL 5
P7_RXC 5
ISET
PHY_INT_N 5
Place all termination close to 9897
MDC 4, 5
MDIO 4, 5
i RGMII
PHY_RESET_N_OUT 4, 5
1
2
3
J23
1-2 Reset from Push Button
2-3 Reset from LAN7801
9897 Reset Select
SW_RESET_N 2, 4, 5
Place Reset ckt close to 9897
P7_RXD3_R
SW_RESET_N 2, 4, 5
P
6_
TXD
3
4
P
TXD
4
P6
_
TXD
1
4
P6
_
TXD0
4
P
6_
RXD
3
4
P6
_
RXD2
4
P6
_
RXD1
4
P6
_
RXD
0
4
P7
_
TXD3
5
P7
TXD
5
P7
_
TXD
1
5
P7
_
TXD0
5
P7
_
RXD
3
5
P7
_
RXD2
5
P7
_
RXD
1
5
P7_RXD
0
5
P6
_
TX
_
CTL
4
P6
_
TX
C
4
P6
_
RX
_
CT
L
4
P6
_
RX
C
4
P7
_
TX
_
CTL
5
P7
_
TX
C
5
P7_RX_
C
T
L
5
P7_RX
C
5
P
7
_
RXD3
_
R
SCL/MDC
SDA/MDIO
SCS_N
VDDIO2v5
1 2
J16
P7_RXD2_R
P7_RXD1_R
P7_RXD0_R
P7_RXC_R
P7_RX_CTL_R
P6_RXD3_R
P6_RXD2_R
P6_RXD1_R
P6_RXD0_R
P6_RXC_R
P6_RX_CTL_R
1k
R83
VDDIO2v5
1 2
J18
1k
R91
Prt 7: LAN7801
Prt 6: KSZ9031
Optional
15pF
C167
15pF
C168
DNP
25MHz
1
Y3
VDDIO2v5
1k
R81
0.1uF
C45
2 4
VCC
5
GND
3
VCC
GND
D
C
D
U14
74LVC1G14GW,125 Br Red
D6
SPI / Aardvark
SDA/MDIO
MISO
SCS_N
0RDNP R126
0R
R127
SCL/MDC
SDA/MDIO
0R
R128 0R
R129
3V3_Board
"9897 SPI Activity"
1k
R96
0.1uF
C31
Blue
D3
2 4
VCC
5
GND
3
VCC
GND
D
C
D
U2
74LVC1G14GW,125
10k
R92
VDDIO2v5
10k
DNP
R94
1 2
3 4
5 6
7 8
9 10
J22
Header 5x2 Shrouded
SP_CLK
I2C_SDA
I2C_SCL
22R
R75
22R
R76
22R
R77
22R
R78
22R
R80
22R
R82
22R
R25
22R
R26
22R
R27
22R
R28
22R
R30
22R
R35
LED2_0
LED4_0
LED1_0
LED1_1
LED2_1
LED4_1
LED5_1
2
3
16
4
5
1
6
15
14
13
12
11
7 10
8 9
SW4
SPST 8POS
1k
R100
1k
R104
1k
R98
1k
R99
1k
R101
1k
R109
1k
R113
1k
R103
LED3_1
10k
R45
10uF
6.3V
C73
2.05k
R93
1 2
J24
1 2
J25
SP_MOSI
RGMII layout requirements
1. Match trace legths within 100 mils.
2. RX signals do not need to be length matched to TX signals.
3. Due to KSZ9897 port 6 RGMII setup time requirement, P6_TXC must be
routed for additional 1.2ns delay relative to P6_TXD[3:0] and P6_TX_CTL.
The amount of required extra delay may differ for different VDDIO voltage
or for a different device driving the signals.
4. Alternatively, the additional P6_TXC trace delay is not needed if the
RGMII ingress delay bit is set in the KSZ9897: bit 4 in register 0x6301.
EVB-KSZ9897 Evaluation Board Schematics
2017 Microchip Technology Inc. DS50002587A-page 23
FIGURE B-2: RJ45 MAGJACK CONNECTORS
GA1 14
GC1
13
GREEN (LINK/ACT)
SHIELD1 0
GA2 16
GC2
15
GREEN (Duplex/Collision)
TRD1-
10 TRCT1
12 TRD1+
11
TRD4-
9TRCT4
7TRD4+
8
TRD2-
5TRCT2
6TRD2+
4
TRD3-
2TRCT3
1TRD3+
3
J2
RJ45 Magjack
GA1 14
GC1
13
GREEN (LINK/ACT)
SHIELD1 0
GA2 16
GC2
15
GREEN (Duplex/Collision)
TRD1-
10 TRCT1
12 TRD1+
11
TRD4-
9TRCT4
7TRD4+
8
TRD2-
5TRCT2
6TRD2+
4
TRD3-
2TRCT3
1TRD3+
3
J3
RJ45 Magjack
GA1 14
GC1
13
GREEN (LINK/ACT)
SHIELD1 0
GA2 16
GC2
15
GREEN (Duplex/Collision)
TRD1-
10 TRCT1
12 TRD1+
11
TRD4-
9TRCT4
7TRD4+
8
TRD2-
5TRCT2
6TRD2+
4
TRD3-
2TRCT3
1TRD3+
3
J1
RJ45 Magjack
GA1 14
GC1
13
GREEN (LINK/ACT)
SHIELD1 0
GA2 16
GC2
15
GREEN (Duplex/Collision)
TRD1-
10 TRCT1
12 TRD1+
11
TRD4-
9TRCT4
7TRD4+
8
TRD2-
5TRCT2
6TRD2+
4
TRD3-
2TRCT3
1TRD3+
3
J4
RJ45 Magjack
LED4_12
LED4_02
LED3_12
LED3_02
LED5_02
LED5_12LED2_12
LED2_02
LED1_12
LED1_02
LED1_1
LED1_0
0.1uF
C2
0.1uF
C4
0.1uF
C6
0.1uF
C8
LED4_1
LED4_0
0.1uF
C1
0.1uF
C3
0.1uF
C5
0.1uF
C7
LED5_1
LED5_0
0.1uF
C10
0.1uF
C12
0.1uF
C14
0.1uF
C16
LED2_1
LED2_0
0.1uF
C9
0.1uF
C11
0.1uF
C13
0.1uF
C15
LED3_1
LED3_0
0.1uF
C22
0.1uF
C23
0.1uF
C24
0.1uF
C25
EARTH_ETH
VDDIO2v5
VDDIO2v5
EARTH_ETH
EARTH_ETHEARTH_ETH
VDDIO2v5
VDDIO2v5
EARTH_ETH
GA1 14
GC1
13
GREEN (LINK/ACT)
SHIELD1 0
GA2 16
GC2
15
GREEN (Duplex/Collision)
TRD1-
10 TRCT1
12 TRD1+
11
TRD4-
9TRCT4
7TRD4+
8
TRD2-
5TRCT2
6TRD2+
4
TRD3-
2TRCT3
1TRD3+
3
J5
RJ45 Magjack
PORT 1
PORT 2
PORT 3
PORT 4
PORT 5
P1_TXRXA_P2
P1_TXRXA_N2
P1_TXRXB_P2
P1_TXRXB_N2
P1_TXRXC_P2
P1_TXRXC_N2
P1_TXRXD_P2
P1_TXRXD_N2
P2_TXRXA_P2
P2_TXRXA_N2
P2_TXRXB_P2
P2_TXRXB_N2
P2_TXRXC_P2
P2_TXRXC_N2
P2_TXRXD_P2
P2_TXRXD_N2
P3_TXRXA_P2
P3_TXRXA_N2
P3_TXRXB_P2
P3_TXRXB_N2
P3_TXRXC_P2
P3_TXRXC_N2
P3_TXRXD_P2
P3_TXRXD_N2
P4_TXRXA_P2
P4_TXRXA_N2
P4_TXRXB_P2
P4_TXRXB_N2
P4_TXRXC_P2
P4_TXRXC_N2
P4_TXRXD_P2
P4_TXRXD_N2
P5_TXRXA_P2
P5_TXRXA_N2
P5_TXRXB_P2
P5_TXRXB_N2
P5_TXRXC_P2
P5_TXRXC_N2
P5_TXRXD_P2
P5_TXRXD_N2
i
Power
VDDIO2v5
VDDIO2v5
VDDIO2v5
VDDIO2v5
VDDIO2v5
VDDIO2v5
1000 pF
2 kV
C95
100R
R1
100R
R2
100R
R4
100R
R3
100R
R5
100R
R6
100R
R7
100R
R8
100R
R9
100R
R15
EVB-KSZ9897 User’s Guide
DS50002587A-page 24 2017 Microchip Technology Inc.
FIGURE B-3: KSZ9031 FUNCTIONAL
MDIO/Yellow
MDIO/Green
MDC/Orange
GND/Black
AVDDL
AVDDH
AVDDL_PLL
DVDDHDVDDL
P6_RXD3 2, 4
P6_RXD2 2, 4
P6_RXD1 2, 4
P6_RXD0 2, 4
P6_RXC 2, 4
1 2
3 4
5 6
7 8
J17
Header 4x2
10k
R72
Single LED Mode
Default:
short 3-4 &
short 5-6
1-2 Reset from LAN7801
3-4 Reset from Push Button
5-6 Reset from R/C
12.1kR73
EARTH_ETH
PORT 6
LED1
0.1uF
C118
0.1uF
C119
0.1uF
C120
0.1uF
C122
GA1
14 GC1 13
GREEN (LINK/ACT)
SHIELD1
0
GA2
16 GC2 15
GREEN (Duplex/Collision)
TRD1- 10
TRCT1 12
TRD1+ 11
TRD4- 9
TRCT4 7
TRD4+ 8
TRD2- 5
TRCT2 6
TRD2+ 4
TRD3- 2
TRCT3 1
TRD3+ 3
J20
RJ45 Magjack
LED2
220R
FB14
220R
FB16
2V5_Board
4.7uF
6.3V
C108
0.1μF
35V
C110
0.1μF
35V
C109
4.7uF
6.3V
C123
0.1μF
35V
C125
0.1μF
35V
C124
220R
FB11
1V2_Board
4.7uF
6.3V
C106
0.1μF
35V
C107
AVDDL
AVDDL_PLL
220R
FB15
4.7uF
6.3V
C111
0.1μF
35V
C113
0.1μF
35V
C112
DVDDL
0.1μF
35V
C115
0.1μF
35V
C114
0.1μF
35V
C117
0.1μF
35V
C116
AVDDH
220R
FB17
4.7uF
6.3V
C126
0.1μF
35V
C128
0.1μF
35V
C127
0.1μF
35V
C129
DVDDH
9031 Reset Select
KSZ9031_25MHZ5
10k
R65
10k
R66
10k
R64
10k
R68
1k
DNP
R70
1k
DNP
R71
Mode3 Mode2 Mode1 Mode0
Mode [3:0] Description
1100 1000BT Full-duplex only (RGMII)
1101 1000BT Full and half duplex mode (RGMII)
1110 10/100/1000BT Full duplex mode (RGMII)
1111 10/100/1000BT Full and half mode (RGMII)
1K
R79
CLK125_EN
PD=Disable
1k
R74
DVDDH
i
Power
EARTH6
AVDDH
DVDDH
AVDDL
AVDDL_PLL
DVDDL
Optional
0R
R32
0R
DNP
R38
0R
DNP
R33
9031_XIXI_R
XO_R
DNP
1 2
3 4
5 6
7 8
9 10
11 12
J12
Port 6 RGMII (TX)
Port 6 RGMII (RX)
P6_TXD32, 4
P6_TXD22, 4 P6_TXD12, 4 P6_TXD02, 4
Place Reset ckt close to 9031
Place termination close to 9031
1 2
3 4
5 6
J15
SW_RESET_N2, 5
PHY_RESET_N_OUT2, 5
1.0μF
C17
100k
R69
15pF
C130
15pF
C131
1
K
R
79
CLK125_E
N
PD=D
i
sa
ble
9031_MDIO 9031_MDIO
9031_LED2LED2
9031_LED1LED1
P6_TXRXD_P
P6_TXRXA_P
P6_TXRXA_N
P6_TXRXB_N
P6_TXRXC_P
P6_TXRXB_P
P6_TXRXC_N
P6_TXRXD_N
9031_XO
9031_RESET_N
P6_RX_CTL 2, 4
22
R48
P6_TXD3 2, 4
P6_TXD2 2, 4
P6_TXD2_R
P6_TXD3_R
22
R42
22
R41
22
R34
22
R20
P6_TX_CTL_R
P6_TXD0_R
P6_TXD1_R
9031_MDC
P6_TXC_R P6_TXC 2, 4
P6_TXD0 2, 4
P6_TXD1 2, 4
P6_TX_CTL 2, 4
9031_MDC MDC 2, 5
MDIO 2, 5
LED_MODE
i
RGMII
10k
R85
10k
R86
1k
DNP
R88
1k
DNP
R90
9031_LED2 9031_LED1
PHYAD2 PHYAD1 PHYAD0
P6_TXC2, 4
10k
R84
Address: 111
P6_RX_CTL2, 4
P6_RXC2, 4
P6_RXD32, 4
P6_RXD22, 4
P6_RXD12, 4
P6_RXD02, 4
DNP
12
34
56
78
910
1112
J10
P6_TX_CTL2, 4
P6_TXC2, 4
P6_TXD32, 4
P6_TXD22, 4
P6_TXD12, 4
P6_TXD02, 4
DNP
25MHz
1
Y2
KSZ9031RNXCC
AVDDH
1
TXRAP_A
2
TXRAM_A
3
AVDDL
4
TXRXM_B
6TXRXP_B
5
TXRXP_C
7
TXRXM_C
8
AVDDL
9
TXRXP_D
10
TXRXM_D
11
AVDDH
12
NC
13
DVDDL
14
LED2/PHYAD1
15
DVDDH
16
LED1/PHYAD0/PME_N1
17
DVDDL
18
TXD0
19
TXD1
20
TXD2
21
TXD3
22
DVDDL
23
GTX_CLK
24
TX_EN 25
DVDDL 26
RXD3/MODE3 27
RXD2/MODE2 28
VSS 29
DVDDL 30
RXD1/MODE1 31
RXD0/MODE0 32
RX_DV/CLK125_EN 33
DVDDH 34
RX_CLK/PHYAD2 35
MDC 36
MDIO 37
INT_N/PME_N2 38
DVDDL 39
DVDDH 40
CLK125O/LED_MODE 41
RESET_N 42
LDO_O 43
AVDDL_PLL 44
XO 45
XI 46
NC 47
ISET 48
P_GND 49
KSZ9031RNXCC
Paddle Ground (Chip Bottom)
(QFN48)
U8
2.05k
R24
DVDDH
DVDDH
DVDDH
DVDDH
DVDDH
100R
R87
100R
R124
0R
R49
12pF
R89
R49 is reduced to 0 ohms, and capacitor is
installed at R89 to improve P6_TXD3 setup
time at KSZ9897 relative to P6_TXC.
Reason: P6_TXC is routed 5 inches longer than
the other P6_TX signals on this board, but this
added delay is insufficient.
See note on sheet 2 about KSZ9897 port 6
RGMII signal routing.
EVB-KSZ9897 Evaluation Board Schematics
2017 Microchip Technology Inc. DS50002587A-page 25
FIGURE B-4: LAN7801 64QFN FUNCTIONAL
12k
1%
R23
2k
1%
R19
1uF
16V
C136
VDDVARIO
1
2
3
J11
10k
R29
TP4
Mini Black
PME Mode Sel
10k
R50
MDC2, 4
MDIO2, 4
PHY_INT_N2
10k
R67
0R
R44
0R
DNP
R46
REF_REXT
REF_FILT
LAN7801_RESET_N
XTAL1
XTAL2
USBRBIAS
VBUS_DET
29
XTAL1
52
XTAL2
53
TEST
46
EECS/GPIO0
23
EEDI/GPIO1
24
EEDO/GPIO2
25
EECLK/GPIO3
26
RXD1 15
REF_REXT 1
REF_FILT 2
RESET_N/PME_CLEAR
47
GPIO7/TDI
57
GPIO8/TCK
58
GPIO9/TMS
59
GPIO10/TDO
60
SUSPEND_N 30
DUPLEX 33
GPIO4
35
PME_MODE/GPIO5
36
RXD2 16
RXD3 17
PHY_INT_N
31
PHY_RESET_N
32
MDIO
55
MDC
56
TXD3 4
TXD2 5
TXD1 6
TXD0 8
TX_CTL 9
TXC 10
RXC 12
RX_CTL 13
RXD0 14
REF_CLK25/GPIO11 61
CLK125 19
PME_N/GPIO6/<USBATEST>
45
USBRBIAS
49
USBDP
38
USBDM
39
TXP
40
TXN
41
RXP
43
RXN
44
U1A
LAN7801/RGMII_QFN64
TEST
0R
DNP
R36
DSC400-1111Q0085KI1
2.3MHz - 460MHz
VDD2 9
VSS
3
OE1
1
NC
2
VSS
4
CLK0-
5
CLK0+
6CLK1- 7
CLK1+ 8
VDD1
19
VSS 13
VSS 14
OE2 11
CLK2- 15
CLK2+ 16
CLK3-
17
CLK3+
18
FSB1
20 FSB2 10
NC 12
ePAD
21
X1
0R
DNP
R43
0.1μF
C26
0.1μF
C19
10k
DNP
R11 10k
DNP
R12
0R
R31
LAN7801_25MHz
GPIO4
GPIO5
GPIO6
GPIO7
GPIO8
GPIO9
GPIO10
0R
R14
Vbus 1
D- 2
D+ 3
GND1 4
SSTX- 5
SSTX+ 6
GND2 7
SSRX- 8
SSRX+ 9
SH2
10
SH1
11
J9
USB3 STANDARD B RECEPTACLE
3V3_Board
2.2uF
C33
SSTX_P
SSTX_N
0.1uF
C35
0.1uF
C36
0.1μF
35V
C41
330R
R37
Vbus Detect Sel
1k
R13
Br Grn
D12
"VBus Detect"
3V3_Board
1
2
3
J8
1
2
3
2.1 mm
5V (typ)
J7
2
3
1
SW2
TOGGLE SWITCH
5V_Board
0.1μF
35V
C18
20R
0603
5%
R10
F1
2A FUSE_SMF
1
2
3
J6
5V Pwr Off/On
Self/Bus Pwr Sel
5V_Barrel 5V_Barrel_F
5V_Barrel_Sw
5V_Barrel
5V_Barrel_F
5V_Barrel_Sw
VBUS
i
Power
5V
_
Barrel
5V
_
Barrel
_
F
5V
_
Barre
l_
S
w
V
B
US
USB2D_P
USB2D_N
USB3RX_P
USB3RX_N
USB3TX_P
USB3TX_N
20k
R17
10k
R16
10k
DNP
R18
CLK125
VBUS_DET
40.2k
1%
R21
0.1μF
C27
PORT 7
EARTH7
LAN7801_EECLK
LAN7801_EEDO
LAN7801_EEDI
LAN7801_EECS
VDDVARIO
10k
R22
SW_RESET_N2, 4
1-2 Reset from Push Button
2-3 Reset from R/C
LAN7801 Reset Select
1
2
3
J21
VDDVARIO
0.1uF
C135
100k
R114
EARTH7
0R
R111
0R
R107
Optional
0R
R110
3V3_Board
"LAN7801 EEPROM Activity"
1k
R112
0.1uF
C134
EEPROM CS
LAN7801_EECS_J
LAN7801_EEDI
LAN7801_EEDO
LAN7801_EECLK
P7_TX_CTL2, 5
P7_TXD32, 5
P7_TXD22, 5
P7_TXD12, 5
P7_TXD02, 5
P7_TXC2, 5
DNP
1 2
3 4
5 6
7 8
9 10
11 12
J19
P7_RX_CTL2, 5
P7_RXD32, 5
P7_RXD22, 5
P7_RXD12, 5
P7_RXD02, 5
P7_RXC2, 5
P7_RXD3 2, 5
P7_RXD2 2, 5
P7_RXD1 2, 5
P7_RXD0 2, 5
P7_RX_CTL 2, 5
P7_RXC 2, 5
P7_TXD3 2, 5
P7_TXD2 2, 5
P7_TXD1 2, 5
P7_TXD0 2, 5
P7_TX_CTL 2, 5
P7_TXC 2, 5
Port 7 RGMII (TX)
Port 7 RGMII (RX)
VBUS
DNP
25MHz
1
Y1
22
R117
22
R118
22
R119
22
R120
22
R115
22
R116
2 4
VCC
5
GND
3
VCC
GND
D
C
D
U10
74LVC1G14GW,125
PHY_RESET_N_OUT2, 4
Place Reset ckt close to 7801
12 J28
Blue
D4
15pF
C39
15pF
C43
P7_TXD3_R
P7_TXD2_R
P7_TXD1_R
P7_TXD0_R
P7_TX_CTL_R
P7_TXC_R
P
7
_
RXD
3
2
, 5
P
7
_
RXD2
2
, 5
P
7
_
RXD
1
2,
5
P
7
_
RXD0
2,
5
P
7
_
RX
_
CTL
2,
5
P
7
_
RX
C
2
, 5
P
7
_
TXD
3
2,
5
P
7
_
TXD
2
2
, 5
P
7
_
TXD
1
2
, 5
P
7
_
TXD
0
2,
5
P
7
_
TX
_
CTL
2,
5
P
7
_
TXC
2
, 5
2
2
R117
7
2
2
R118
8
2
2
R119
9
22
R120
0
2
2
R115
5
22
R116
6
P7
_
TXD3
_
R
P7_TXD
2
_R
P7
_
TXD1
_
R
P7
_
TXD
0_
R
P7
_
TX
_
CTL
_
R
P7
_
TXC
_
R
i
RGMII
3V3_Board
"LAN7801 Suspend"
0.1uF
C32
2 4
VCC
5
GND
3
VCC
GND
D
C
D
U9
74LVC1G14GW,125
SUSPEND_N
YELLOW
D5 330R
R122
XTAL1_R
XTAL2_R
2 4
VCC
5
GND
3
VCC
GND
D
C
D
U15
74LVC1G14GW,125
CS 1
DO 4
DI 3
NC
7
VSS
5CLK 2
ORG
6
VCC
8
U4
93AA66C-I/SN
0.1uF
25V
C20
VDDVARIO
10k
R51
KSZ9031_25MHZ4LAN7801_25MHz
CLK125 KSZ9897_25MHZ 2
DNP
12
34
56
78
910
1112
J13
1
2
3
4
5
6
7
8
J14
2V5_Board
USB3 Signal pairs are swapped for better
routin
g
EVB-KSZ9897 User’s Guide
DS50002587A-page 26 2017 Microchip Technology Inc.
FIGURE B-5: LAN7801 / KSZ9897 POWER & REGULATORS
0.1μF
35V
C140
0.1μF
35V
C141
0.1μF
35V
C142
0.1μF
35V
C138
0.1μF
35V
C139
0.1μF
35V
C48
1uF
16V
C40
0.1μF
35V
C21
0.1μF
35V
C137
0.1μF
35V
C37
0.1μF
35V
C38
0.1μF
35V
C42
0.1μF
35V
C34
0.1μF
35V
C28
0.1μF
35V
C47
4.7uF
6.3V
0603
C29
1uF
16V
C44
4.7uF
6.3V
0603
DNP
C30
TP2
Mini Black
DNP
TP10
Mini Orange
DNP
TP17
Mini Orange
VDD12PLLA0
i
Power
FID1 FID2
FID3 FID4
FID5 FID6
VSS 65
VDDVARIO
3
VDDVARIO
7
VDDVARIO
11
VDDVARIO
18
VDD12_SW_OUT 20
VDD33_SW_IN 21
VDD12_SW_FB 22
VDDVARIO
27
VDD12CORE
54
VDDVARIO
48
VDDVARIO
51
VDD12A
37
VDD33A
50
VDD12A
42
VDD12A
62
VDD25_REG_OUT 63
VDD33_REG_IN 64
nc 34
VDD12CORE
28
U1B
LAN7801/RGMII_QFN64
MCP16311T-E/MNY
AGND
8PGND
5
VIN
4
EN
3
VFB 1
BOOST 7
VCC 2
SW 6
EP
9
U5
5V_Board TP7
Mini Red 0.1μF
35V
C46
10k
1%
R55
3V3_FB
3V3_SW
3V3_Board
1k
R54
"3.3V Board"
TP1
Mini White
Br Grn
D2
VCC1
TP5
Mini Black
MCP16311T-E/MNY
AGND
8PGND
5
VIN
4
EN
3
VFB 1
BOOST 7
VCC 2
SW 6
EP
9
U6
5V_Board
0.1μF
35V
C64
10k
1%
R59
2V5_FB
2V5_SW
2V5_Board
VCC2
Orange
TP3
31.6k
1%
R53
1 %
21.5K
R58
0.1μF
35V
DNP
C87
15uH
L2
10uF
25V
C49
10uF
25V
C60
10uF
25V
C61
10uF
25V
C62
1uF
C63
3.3V @ 1A Output
2.5V @ 1A Output
10uF
25V
C76
10uF
25V
C85
10uF
25V
C88
10uF
25V
C89
1uF
C90
15uH
L3
220R
FB5
1V2_Board
1V2_Board
1V2_Board
1V2_Board
3V3_Board
3V3_Board
VDD33_REG_IN
VDD12_SW_IN / FB
3V3_Board
VDD25_REG_OUT
2V5_Board VDDVARIO
0.1uF
C55
0.1uF
C56
0.1uF
C57
0.1uF
C58
0.1uF
C59
0.1uF
C54
0.1uF
C53
0.1uF
C52
0.1uF
C51
0.1uF
C69
0.1uF
C70
0.1uF
C71
0.1uF
C68
0.1uF
C67
0.1uF
C66
0.1uF
C65
0.1uF
C80
0.1uF
C81
0.1uF
C82
0.1uF
C83
0.1uF
C84
0.1uF
C79
0.1uF
C78
0.1uF
C77
0.1uF
C72
0.1uF
C143
1uF
C50
1uF
C75
AVDDL
3
AVDDH
10
DVDDL
11
AVDDL
14
AVDDL
19
AVDDH
22
DVDDL
23
AVDDL
30
AVDDH
33
AVDDL
36
AVDDL
41
AVDDH
44
DVDDL
45
GND 46
GND 47
DVDDL
56
VDDIO 61
DVDDL
74
VDDIO 77
GND 84
DVDDL
87
nu 90
VDDIO 99
DVDDL
104
GND 107
nc 108
GND 109
DVDDL
110
AVDDH
111
AVDDL
114
AVDDL
119
AVDDH
122
GND 123
AVDDL
124
AVDDH
128
ePAD 129
2.5V ANALOG 1.2V ANALOG1.2V DIGITAL
KSZ9897R
U3B
220R
FB8
2V5_Board
2V5_Board
220R
FB13
220R
FB12
1V2_Board
1V2_Board
220R
FB4
VDDIO2v5
0.1uF
C144
5V_Board
3V3_Board
2V5_Board
1V2_Board
VDDVARIO
VDD33_REG_IN
VDD12_SW_IN / FB
VDD25_REG_OUT
VDD12PLLA0
VDDIO2v5
3V3_SW 2V5_SW 1V2_SW
MH4MH3MH2MH1
0R
R47
0R
R125
0R
R123
AVDDL1v2
AVDDH2v5
DVDDL1v2
AVDDL1v2
AVDDH2v5
DVDDL1v2
1uF
16V
C132
10uF
6.3V
C86
10uF
6.3V
C74
10uF
6.3V
C96
1V2_Board
1.235V @ 2A Output
TP6
Mini Yellow
TP8
Mini Black
GND
2
EN
8
BS 4
FB 5
MIC4684YM-TR
VIN
3
SW 1
GND
6
GND
7
U7
47μF
25V
C92
B340A
D7
MBRX140
D1
0.33uF
50V
C91
330uF
6.3V
TANT-D
C93
0.1uF
C94
1V2_SW
1V2_BS
1V2_FB
5V_Board
0R
R56
DNP
R60
0R
R52
0.1μF
35V
DNP
C98
0.1μF
35V
DNP
C97
4.7k
R57
27uH
L1
10k
R61
2017 Microchip Technology Inc. DS50002587A-page 27
EVB-KSZ9897
EVALUATION BOARD
USER’S GUIDE
Appendix C. Bill of Materials (BOM)
C.1 INTRODUCTION
This appendix includes the EVB-KSZ9897 Evaluation Board Bill of Materials (BOM).
EVB-KSZ9897 User’s Guide
DS50002587A-page 28 2017 Microchip Technology Inc.
TABLE C-1: EVB-KSZ9897 EVALUATION BOARD BILL OF MATERIALS
Item Qty Reference Description Populated Manufacturer Manufacturer Part Number
1 56 C1, C2, C3, C4, C5, C6, C7, C8,
C9, C10, C11, C12, C13, C14,
C15, C16, C22, C23, C24, C25,
C31, C32, C45, C51, C52, C53,
C54, C55, C56, C57, C58, C59,
C65, C66, C67, C68, C69, C70,
C71, C72, C77, C78, C79, C80,
C81, C82, C83, C84, C94, C118,
C119, C120, C122, C134, C143,
C144
CAP CER 0.1uF 50V 10% X7R SMD 0402 YES TDK Corporation C1005X7R1H104K050BB
2 1 C17 CAP CER 1UF 50V 10% X7R 0603 YES Taiyo Yuden UMK107AB7105KA-T
3 35 C18, C19, C21, C26, C27, C28,
C34, C37, C38, C41, C42, C46,
C47, C48, C64, C107, C109,
C110, C112, C113, C114, C115,
C116, C117, C124, C125, C127,
C128, C129, C137, C138, C139,
C140, C141, C142
CAP CER 0.1UF 35V X5R 0402 YES TDK Corporation C1005X5R1V104M050BB
4 2 C20, C135 CAP CER 0.1uF 25V 10% X7R SMD 0603 YES Murata GRM188R71E104KA01D
5 6 C29, C106, C108, C111, C123,
C126
CAP CER 4.7uF 6.3V 20% X5R SMD 0603 YES Panasonic ECJ-1VB0J475M
6 1 C33 CAP CER 2.2uF 6.3V 10% X7R SMD 0603 YES TDK C1608X7R0J225K
7 2 C35, C36 CAP CER 0.1uF 10V 10% X5R SMD 0402 YES KEMET C0402C104K8PACTU
8 6 C39, C43, C130, C131, C167,
C168
CAP CER 15pF 50V 5% NP0 SMD 0402 YES Murata GRM1555C1H150JA01D
9 4 C40, C44, C132, C136 CAP CER 1uF 16V 10% X5R SMD 0603 YES AVX 0603YD105KAT2A
10 8 C49, C60, C61, C62, C76, C85,
C88, C89
CAP CER 10uF 25V 10% X5R SMD 0805 YES Murata GRM21BR61E106KA73L
11 2 C50, C75 CAP CER 1uF 16V 10% X5R SMD 0402 YES TDK Corporation C1005X5R1C105K
12 2 C63, C90 CAP CER 1UF 35V 10% X5R SMD 0402 YES Murata Electronics North America GRM155R6YA105KE11D
13 4 C73, C74, C86, C96 CAP CER 10uF 6.3V 20% X5R SMD 0603 YES AVX 06036D106MAT2A
14 1 C91 CAP CER 0.33uF 50V 10% X7R SMD 0805 YES TDK Corporation C2012X7R1H334K125AA
15 1 C92 CAP CER 47UF 25V X5R 1206 YES TDK Corporation C3216X5R1E476M160AC
16 1 C93 CAP TANT 330uF 6.3V 20% 45mOhm SMD D YES KEMET T520D337M006ATE045
17 1 C95 CAP CER 1000PF 2KV 1808 YES Murata GR442QR73D102KW01L
Bill of Materials (BOM)
2017 Microchip Technology Inc. DS50002587A-page 29
18 1 R89 CAP CER 12pF 50V 5% NP0 SMD 0603 YES Panasonic ECJ-1VC1H120J
19 1 D1 DIO SCTKY MBRX140-TP 550mV 1A 40V SMD SOD-123 YES Micro Commercial Co MBRX140-TP
20 2 D2, D12 LED, Bright Green, 0603 YES Lite-On LTST-C191KGKT
21 2 D3, D4 LED, Blue, 0603 YES Kingbright APT1608VBC/D
22 1 D5 DIO LED YELLOW 2.1V 20mA 14mcd Diffuse SMD 0603 YES Lumex sml-lx0603yw
23 1 D6 LED, Bright Red, 0603 YES Lite-On LTST-C191KRKT
24 1 D7 DIO SCTKY B340A 500mV 3A 40V DO-214AC_SMA YES Diodes Incorporated B340A-13-F
25 1 F1 Surface Mount Fuses Fuseblock w/ fuse 2A OMNI BLOK
154
YES Littelfuse 0154002.DR
26 10 FB4, FB5, FB8, FB11, FB12,
FB13, FB14, FB15, FB16, FB17
FERRITE 2A 220R SMD 0805 YES Murata Electronics North America BLM21PG221SN1D
27 6 J1, J2, J3, J4, J5, J20 CON MODULAR RJ45 MAGJACK TH R/A YES Amphenol Commercial Products RJMG2012211A0FR
28 3 J6, J8, J11 HDR 3POS .100" SGL GOLD YES Samtec Inc. TSW-103-07-G-S
29 1 J7 CONN PWR JACK 2.5X5.5MM HIGH CUR YES CUI Inc. PJ-002AH
30 1 J9 CONN RCPT USB TYPE B 3.0 R/A YES Wurth Electronics Inc 6.92221E+11
31 1 J14 CON HDR-2.54 MALE 1x8 GOLD 5.84MH TH VERT YES Samtec TSW-108-07-G-S
32 1 J15 CONN HEADER 6POS .100" DUAL GOLD YES Samtec TSW-103-07-G-D
33 4 J16, J18, J24, J25 CON HDR-2.54 MALE 1x2 GOLD 5.84MH TH VERT YES Samtec TSW-102-07-G-S
34 1 J17 CON HDR-2.54 Male 2x3 Gold 5.84MH TH VERT YES Samtec TSW-104-07-G-D
35 2 J21, J23 CON HDR-2.54 MALE 1x3 GOLD 5.84MH TH VERT YES Samtec TSW-103-07-G-S
36 1 J28 HDR 2POS .100" SGL GOLD YES Samtec Inc. TSW-102-07-G-S
37 1 L1 IND 27uH 20 % 2.35A SMD YES Bourns SRR1240-270M
38 2 L2, L3 INDUCTOR 15uH 1.16A 20% SMD MSS6132 YES Coilcraft MSS6132-153ML
39 12 R1, R2, R3, R4, R5, R6, R7, R8,
R9, R15, R87, R124
RES TKF 100R 5% 1/10W SMD 0603 YES Panasonic ERJ-3GEYJ101V
40 1 R10 RES TKF 20R 5% 1/10W SMD 0603 YES NIC Components NRC06J200TRF
41 2 R13, R54 RES 1k 5% 1/10W SMD 0603 YES Panasonic Electronic Components ERJ-3GEYJ102V
42 16 R14, R31, R32, R44, R47, R52,
R56, R106, R107, R110, R111,
R123, R125, R127, R128, R129
RES TKF 0R 1/10W SMD 0603 YES Panasonic ERJ-3GEY0R00V
43 1 R49 RES TKF 0R SMD 0402 YES Panasonic ERJ-2GE0R00X
44 15 R16, R22, R29, R50, R51, R61,
R64, R65, R66, R67, R68, R72,
R84, R85, R86
RES TKF 10k 5% 1/10W SMD 0603 YES Panasonic ERJ-3GEYJ103V
45 1 R17 RES TKF 20k 5% 1/10W SMD 0603 YES Panasonic ERJ-3GSYJ203
TABLE C-1: EVB-KSZ9897 EVALUATION BOARD BILL OF MATERIALS (CONTINUED)
Item Qty Reference Description Populated Manufacturer Manufacturer Part Number
EVB-KSZ9897 User’s Guide
DS50002587A-page 30 2017 Microchip Technology Inc.
46 1 R19 RES TKF 2k 1% 1/10W SMD 0603 YES Panasonic ERJ-3EKF2001V
47 11 R20, R34, R41, R42, R48, R115,
R116, R117, R118, R119, R120
RES 22ohm 5% 1/10W SMD 0402 YES Panasonic ERJ-2GEJ220X
48 1 R21 RES TKF 40.2k 1% 1/16W SMD 0603 YES Panasonic Electronic Components ERJ-3EKF4022V
49 1 R23 RES TKF 12k 1% 1/10W SMD 0603 YES Yageo RC0603FR-0712KL
50 2 R24, R93 RES TKF 2.05k 1% 1/10W SMD 0603 YES Yageo RC0603FR-072K05L
51 12 R25, R26, R27, R28, R30, R35,
R75, R76, R77, R78, R80, R82
RES TKF 22R 1% 1/10W SMD 0603 YES Yageo RC0603FR-0722RL
52 1 R37 RES TKF 330R 5% 1/10W SMD 0603 YES Panasonic Electronic Components ERJ-3GEYJ331V
53 17 R39, R40, R74, R79, R81, R83,
R91, R96, R98, R99, R100,
R101, R103, R104, R109, R112,
R113
RES TKF 1k 5% 1/10W SMD 0603 YES Panasonic ERJ-3GEYJ102V
54 2 R45, R92 RES TKF 10k 5% 1/10W SMD 0603 YES Panasonic ERJ-3GEYJ103V
55 1 R53 RES TKF 31.6K 1% 1/10W SMD 0603 YES Panasonic Electronic Components ERJ-3EKF3162V
56 2 R55, R59 RES TKF 10k 1% 1/10W SMD 0603 YES NIC Components NRC06F1002TRF
57 1 R57 RES TKF 4.7k 5% 1/10W SMD 0603 YES Panasonic ERJ-3GEYJ472V
58 1 R58 RES TKF 21.5K 1% 1/10W SMD 0603 YES Panasonic ERJ-3EKF2152V
59 2 R69, R114 RES TKF 100k 5% 1/10W SMD 0603 YES Panasonic ERJ-3GEYJ104V
60 1 R73 RES 12.1K 1% 1/10W 0603 YES Panasonic Electronic Components ERJ-3EKF1212V
61 1 R108 RES TKF 6.04k 1% 1/10W SMD 0603 YES Yageo 9T06031A6041FBHFT
62 1 R122 RES TKF 330R 5% 1/10W SMD 0603 YES Panasonic ERJ-3GEYJ331V
63 1 SW1 Tactile Switch SPST-NO Top Actuated Surface Mount YES C&K PTS810 SJM 250 SMTR LFS
64 1 SW2 Slide Switch SPDT Through Hole YES C&K 1101M2S3CQE2
65 1 SW4 SWITCH SLIDE SPST 24V 100mA 1825058-9EXT ACT
8POS 24V
YES TE Connectivity Alcoswitch
Switches
1-1825058-9
66 1 TP1 TEST POINT PC MINI .040"D WHITE YES Keystone Electronics 5002
67 4 TP2, TP4, TP5, TP8 TEST POINT PC MINI .040"D BLACK YES Keystone Electronics 5001
68 1 TP3 TEST POINT PC MINI .040"D ORANGE YES Keystone Electronics 5003
69 1 TP6 TEST POINT PC MINI .040"D YELLOW YES Keystone Electronics 5004
70 1 TP7 TEST POINT PC MINI .040"D RED YES Keystone Electronics 5000
71 5 U2, U9, U10, U14, U15 74LVC1G14GW,125 SCHMITT-TRG INVERTER YES NXP 74LVC1G14GW,125
72 1 U1 Edinburgh LAN7801/RGMII pinout, QFN64 YES Microchip LAN7801/RGMII_QFN64
TABLE C-1: EVB-KSZ9897 EVALUATION BOARD BILL OF MATERIALS (CONTINUED)
Item Qty Reference Description Populated Manufacturer Manufacturer Part Number
Bill of Materials (BOM)
2017 Microchip Technology Inc. DS50002587A-page 31
73 1 U3 IC, 7-Port Gigabit Ethernet Switch with 2 RGMII / MII /
RMII Interfaces, TQFP128
YES Microchip Technology KSZ9897RTXC
74 1 U4 IC EEPROM 4KBIT 3MHZ 8SOIC YES Microchip Technology 93AA66C-I/SN
75 2 U5, U6 IC REG BUCK SYNC ADJ 1A 8TDFN YES Microchip Technology MCP16311T-E/MNY
76 1 U7 IC REG BUCK ADJ 2A 8SOIC YES Micrel Inc MIC4684YM-TR
77 1 U8 KSZ9031RNXCC Gigabit Ethernet PHY with RGMII YES Microchip KSZ9031RNXCC
78 1 J22 HDR 10POS .100" DUAL SHROUDED YES Adam Tech BHR-10-VUA
79 1 X1 OSC MEMS CONFIGURABLE FOUR OUTPUT YES Microchip Technology DSC400-1111Q0085KI1
80 0 C30 CAP CER 4.7uF 6.3V 20% X5R SMD 0603 NO Panasonic ECJ-1VB0J475M
81 0 C87, C97, C98 CAP CER 0.1UF 35V X5R 0402 NO TDK Corporation C1005X5R1V104M050BB
82 0 J10, J12, J13, J19 CON HDR-2.54 Male 2x5 Gold 5.84MH TH VERT NO Samtec Inc TSW-106-07-G-D
83 0 R11, R12, R18, R94 RES TKF 10k 5% 1/10W SMD 0603 NO Panasonic ERJ-3GEYJ103V
84 0 R33, R36, R38, R43, R46, R60,
R102, R105, R126
RES TKF 0R 1/10W SMD 0603 NO Panasonic ERJ-3GEY0R00V
85 0 R70, R71, R88, R90 RES TKF 1k 5% 1/10W SMD 0603 NO Panasonic ERJ-3GEYJ102V
86 0 TP10, TP17 TEST POINT PC MINI .040"D ORANGE NO Keystone Electronics 5003
87 0 Y1, Y2, Y3 Crystal 25MHz 10pF SMD 4Pin DFN LCC NO Abracon ABM8G-25.000MHZ-B4Y-T
TABLE C-1: EVB-KSZ9897 EVALUATION BOARD BILL OF MATERIALS (CONTINUED)
Item Qty Reference Description Populated Manufacturer Manufacturer Part Number
DS50002587A-page 32 2017 Microchip Technology Inc.
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Worldwide Sales and Service
11/07/16