Micrel KSZ8895 User manual

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 1 1/8/2013
KSZ8895MQ/RQ
Evaluation Board User’s Guide
KSZ8895 Family Integrated 5-port 10/100 Ethernet
Managed Switch
Rev 1.2 January 2013

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 2 1/8/2013
Table of contents
1.0 Introduction...........................................................................................................................5
2.0 Features.................................................................................................................................5
3.0 Evaluation Kit Contents........................................................................................................5
4.0 Hardware Description...........................................................................................................6
4.1 Strap in Mode....................................................................................................................7
4.1.1 Feature Setting Jumpers.............................................................................................8
4.2 EEPROM Mode..............................................................................................................10
4.3 SPI Mode ........................................................................................................................11
4.4 10/100 Ethernet Ports......................................................................................................11
4.5 LED indicators................................................................................................................12
4.6 MII/RMII Ports Configuration........................................................................................12
4.6.1 Port 5 SW5-MII Jumper Configuration for KSZ8895MQ ......................................14
4.6.2 Port 5 P5-MII Jumper Configuration for KSZ8895MQ..........................................14
4.6.3 Port 5 SW5-RMII Jumper Configuration for KSZ8895RQ.....................................14
4.6.4 Port 5 P5-RMII Jumper Configuration for KSZ8895RQ ........................................15
4.7 MDC/MDIO Interface for MIIM Registers and SMI mode ...........................................15
5.0 Software Description ..........................................................................................................16
5.1 Introducing Application Software Tools ........................................................................16
5.2 Install Window Driver First............................................................................................16
5.3 DOS SPI Tool.................................................................................................................19
5.4 MDC/MDIO MIIM Software Tool.................................................................................20
5.4.1 MDC/MDIO MIIM software installation ................................................................20
5.4.2 On board jumper setting and Software Application ................................................20
5.5 MDC/MDIO SMI Software Tool....................................................................................21
5.5.1 MDC/MDIO SMI software......................................................................................21
5.5.2 On board jumper setting and Software Application ................................................21
5.6 EEPROM Software Tool ................................................................................................23
5.6.1 EEPROM software installation................................................................................23
5.6.2 On board jumper setting and Software Application ................................................23
5.7 Window SPI Software Tool............................................................................................25
5.7.1 Window SPI software installation ...........................................................................25
5.7.2 On board jumper setting and Software Application ................................................25
6.0 Reference Documents.........................................................................................................26
7.0 Bill of Material....................................................................................................................26
8.0 Schematics ..........................................................................................................................26

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 3 1/8/2013
List of Figures and Tables
Figure 1 KSZ8895 Evaluation Board .........................................................................................6
Figure 2 KSZ8895 Evaluation Board Block Diagram................................................................7
Table 1 Feature Setting Jumpers.................................................................................................8
Table 2 Reserved Jumpers and recommendation......................................................................10
Table 3 EEPROM Mode Settings.............................................................................................10
Table 4 SPI Mode Settings .......................................................................................................11
Table 5 LED Modes..................................................................................................................12
Table 6 MII Mode Settings.......................................................................................................13
Table 7 SNI Header Pin Definitions.........................................................................................13
Table 8 Configure for SW5-MII...............................................................................................14
Table 9 Configure for P5-MII...................................................................................................14
Table 10 Configure for SW5-RMII ..........................................................................................14
Table 11 Configure for P5-RMII..............................................................................................15
Table 12 MDC/MDIO Settings for MIIM and SMI .................................................................15

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 4 1/8/2013
Revision History
Revision Date Change
1.0 9/29/10 Initial release
1.1 12/03/10 Remove TMQ part
1.2 01/08/13 Update the user interface for
the updated software tool

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 5 1/8/2013
1.0 Introduction
The KSZ8895 family is Micrel Operations’ new generation integrated 5-port switch. The
KSZ8895MQ is one of KSZ8895 family. KSZ8895MQ contains two MII interfaces for MAC 5 and
PHY 5 of the port 5. KSZ8895RQ is one of KSZ8895 family. KSZ8895RQ contains two RMII
interfaces for MAC 5 and PHY 5 of port 5. The device had been designed with cost sensitive
systems in mind but still offers a multitude of features such as switch management; port and tag
based VLAN; QoS priority; CPU control SPI interfaces and CPU control MDC/MDIO for
MIIM/SMI interfaces. The KSZ8895 family is an excellent choice in broadband gateway
applications, integrated broadband router applications, managed media converter, industrial
automatic, automotive, etc. fields and as a standalone 5-port switch. The KSZ8895 evaluation
board is designed to allow the user to experience first-hand the rich feature set of this exciting new
product. The evaluation board is highly configurable and easy to use.
2.0 Features
•Micrel KSZ8895 Integrated 5-port 10/100 Managed Ethernet Switch
•5 RJ-45 Jacks for Ethernet LAN and WAN Interfaces with Corresponding Isolation Magnetics.
•Auto MDI/MDIX on All Ports.
•1 PHY mode and 1 MAC mode MII Connector are for the port 5 MAC 5 SW5-MII/RMII
Interface
•1 PHY mode is for the port 5 PHY 5 P5-MII/RMII interface
•1 USB Port Interface Configurable to Emulate an I2C or SPI or MDC/MDIO Interface for
EEPROM, all control registers and all MIIM registers access.
•On Board EEPROM
•3 LEDs Per Port to Indicate the Status and Activity
•5VDC, 2.5A Universal Power Supply (Not included), the Powered can be used by USB port.
3.0 Evaluation Kit Contents
The KSZ8895 Evaluation kit includes the following:
•KSZ8895 Evaluation Board Rev. 1.x
•KSZ8895 Evaluation Board User’s Guide Rev 1.x
•Micrel EEPROM/SPI/SMI/MIIM Configuration Software tools
•KSZ8895 Evaluation Board Schematics and BOM
•The software, schematics and other design information will be found in the Design Kit (Design
Package) of the KSZ8895 Ethernet switch products on Micrel website.
(Contact your Micrel FAE for the latest schematic).
•The USB cable is not included.

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 6 1/8/2013
4.0 Hardware Description
The KSZ8895 evaluation board is in a compact form factor and can sit on a bench near a computer
with USB connector. There are four options for configuration: strap in mode; EEPROM mode, SMI
mode and SPI mode. Strap in mode configuration is easily done with on board jumper options.
EEPROM mode, SMI mode and SPI mode are accomplished through a built in USB port interface.
Using Micrel EEPROM software and your PC, you can program the EEPROM on board by the
USB port. Using Micrel SPI software and your PC, you can access the KSZ8895’s full feature set
registers by the USB to SPI interface. Or using Micrel MDC/MDIO software and SMI software
with your PC, you can access the KSZ8895’s MIIM PHY registers by generic MDC/MDIO
interface and full feature set registers by the SMI mode of MDC/MDIO interface. The board also
features the MII connectors for the Switch MII/RMII interface. These are to facilitate connections
from the switch to an external MAC or PHY. There is also an additional MII connector for the
PHY5 MII/RMII interface to an external MAC. This is used to recover use of the fifth PHY unit in
broadband gateway applications or others.
The KSZ8895 evaluation board is easy to use. There are programmable LED indicators for link and
activity on all ports and a power LED. A manual reset button allows the user to reset the board
without removing the power plug. A standard 5VDC power supply is included so that the user can
supply power from any 110-240 Volt AC wall or bench socket, and the power also can be provided
by USB port when close pin 2-3 of the JP47 jumper.
Figure 1 KSZ8895 Evaluation Board

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 7 1/8/2013
FIFO, Flow Control, VLAN Tagging, Priority
USB
Device USB Port
EEPROM
Port 1 Port 2 Port 3 Port 4 Port 5 P5-MII /RMII
PHY
Connector
SW5-MII/
TMII/RMII
MAC/PHY
SNI 7-Wire I/F
Mag 1 Mag 2 Mag 5
5 VDC
Jack
3.3V
Regulator
1.2V
Regulator
Reset
Button
KSZ8895
Mag 3 Mag 4
Figure 2 KSZ8895 Evaluation Board Block Diagram
4.1 Strap in Mode
Strap in configuration mode is the quickest and easiest way to get started. In this mode, the
KSZ8895 acts as a stand-alone 5 port switch. The user has to simply set the board’s configuration
jumpers to the desired settings and apply power to the board. The user can also change jumper
settings while power is applied to the board and press the convenient manual reset button for the
new settings to take effect. Note that even if there is no external strap in values are set, internal pull
up and pull down resistors will set the KSZ8895 default configuration. Section 4.1.1 covers each
jumper on the board and describes its function.
To start in strap in configuration mode, make sure that JP1 and JP2 are closed and JP3, JP4, JP8 and
JP9 are open. In this mode, pins (PS1,PS0)=(0,0), the chip will start automatically, after trying to

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 8 1/8/2013
read the external EEPROM, if EEPROM does not exist, the chip will use the default values and the
strap option setting for all internal registers.
4.1.1 Feature Setting Jumpers
The evaluation board provides jumpers to allow the user to easily set strap in configurations for the
KSZ8895. Table 1 describes the jumpers and their function in the open or closed state.
Table 1 Feature Setting Jumpers
Jumper KSZ8895 Signal 2-pin Jumper Open
3-pin Jumper 1-2 Closed 2-pin Jumper Closed 3-pin Jumper 2-3 Closed
JP1 SCL SPI and MIIM/SMI EEPROM
JP2 SPIQ SPI EEPROM and MIIM/SMI
JP3 MDC SPI and EEPROM MIIM/SMI
JP4 MDIO SPI and EEPROM MIIM/SMI
JP5 IN_PWR_SEL Use external 1.2V LDO Use internal 1.2V LDO
controller (default on board)
JP46
3-pin Set it consistency with JP5 1-2 Close and JP5 Close: use internal 1.2V LDO
controller
2-3 Close and JP5 Open: use
external 1.2V LDO
JP6
3-pin MDIXDIS 1-2 Close: disable Auto – MDI/MDIX mode 2-3 Close or all Open: enable Auto – MDI/MDIX (default)
JP8 PS0 EEPROM/SPI/SMI Setting. See Section 4.2 and 4.3
JP9 PS1 EEPROM/SPI/SMI Setting. See Section 4.2 and 4.3
JP10 SCONF0 MII Setting See Section 4.6
JP11 SCONF1 MII Setting See Section 4.6
JP12 to
JP15 FXSD1-4 Reserved Normal operation for copper (internal pull-down) Normal operation for copper (stronger external pull-down)
JP16 PWRDN-N Normal Operation Hardware Power down
KSZ8895
JP17
3-pin Default 2-3 close is for SW5- MII/
TMII RXC clock
1-2 Close: SW5-RMII
provides 50MHz clock 2-3 Close: SW5-MII or SW5-RMII receive 50MHz
clock from opposite
JP18
3-pin Default 1-2 close is for SW5- MII/
TMII TXC clock
1-2 Close: SW5-MII mode.
Detail see schematics 2-3 Close: RMII interface without clock provided
JP20 SMRXD3 Disable SW5-MII and RMII
Flow Control Enable SW5- MII and RMII Flow Control
JP21 SMRXD2 SW5-MII and RMII Half
Duplex Mode SW5-MII and RMII Full Duplex Mode
JP22 SMRXD1 SW5-MII/RMII 100BT
mode and SW5-TMII
200BT mode
SW-MII/RMII 10BT mode

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 9 1/8/2013
JP23 SMRXD0 LED Mode 0:
LEDx_2 = Link/Act
LEDx_1 = Full Duplex/Col
LEDx_0 = Speed
LED Mode 1:
LEDx_2 = 100Link/Act
LEDx_1 = 10Link/Act
LEDx_0 = Full Duplex
JP25 MDIO Don’t access external PHY Access PHY MIIM registers
JP26 MDC Don’t access external a
single PHY Provide MDC clock to access a single PHY MIIM registers
JP24
3-pin Default 2-3 close is for P5- MII
RXC clock
1-2 Close: P5-RMII
provides 50MHz clock 2-3 Close: P5-MII mode or SW5-RMII receive 50MHz
clock from opposite
JP27
3-pin Default 1-2 close is for P5- MII
TXC clock
1-2 Close: P5-MII mode.
Detail see schematics 2-3 Close: RMII interface without clock provided
JP28 PMRXDV Reserved
JP29 PMRXD3 Enable flow control Disable flow control
JP30 PMRXD2 Disable Back Pressure Enable Back Pressure
JP31 PMRXD1 Drop excessive collision
packets Do not drop excessive collision packets
JP32 PMRXD0 Aggressive back off disable Aggressive back off enable
JP33 PMRXER Max Packet Size up to
1522/1518 bytes Max Packet Size up to 1536 bytes
JP34 PCRS Force Half Duplex on port 4
if AN is disabled or failed Force Full duplex on port 4 if AN is disabled or failed
JP35 PCOL No Force Flow Control on
port 4 Force Flow Control on port 4
JP36 LED1_0 Force Half Duplex on port 3
if AN is disabled or failed Force Full duplex on port 3 if AN is disabled or failed
JP37 LED1_1 No Force Flow Control on
port 3 Force Flow Control on port 3
JP40 LED2_1 Enable Auto-negotiation on
port 3 Disable Auto-negotiation on port 3
JP41 LED2_2 SW5-RMII clock mode, the
chip clock source is from
25MHz crystal (default)
SW5-RMII normal mode, the
chip clock source is from
RMII 50MHz SMTXC.
JP42 LED3_0 8mA for I/O pin drive
current 12mA for I/O pin drive current
JP43 LED5_0 Enable Auto-negotiation on
port 4 Disable Auto-negotiation on port 4
JP44 LED5_1 Enable port 5 P5-MII/RMII Tristate port 5 P5-MII/RMII
JP45 LED5_2 Enable Aging Disable Aging
JP47
3-pin DC from 5V Jack 1-2 Close: 5V DC from the power jack of AC adapter 2-3 Close: 5V DC from the USB connector.

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 10 1/8/2013
Table 2 Reserved Jumpers and recommendation
Jumper Number Description Recommended Settings
JP7 Test 2 Open
JP19 SMRXDV Open
JP28 PMRXDV Open
JP38 LED1_0 Open
JP39 LED1_1 Open
JP44 LED5_1 Open
4.2 EEPROM Mode
The evaluation board has an EEPROM to allow the user to explore more extensive capabilities of
the KSZ8895. The user can conveniently program the EEPROM on board using the USB port from
any computer with a WIN 2000/XP environment and the Micrel provided software. This makes it
easy for the user to evaluate features like “broadcast storm protection” and “rate control”.
To prepare the KSZ8895 evaluation board for EEPROM configuration follow these steps:
1. Copy the Micrel provided EEPROM software to your computer.
2. Set JP3, JP4, JP5 and JP9 as specified in Table 3 for EEPROM mode configuration. Make sure
that the EEPROM is installed on the board.
Table 3 EEPROM Mode Settings
Jumper Description Setting
JP1 EEPROM Closed
JP2 EEPROM Closed
JP3 MDC Open
JP4 MDIO Open
JP4 Serial Bus Config. (PS0) Open
JP5 Serial Bus Config. (PS1) Open
3. Connect the computer’s USB port to the KSZ8895 board with a USB port cable.
4. There are two way to power up the evaluation board:
a). Connect the 5 VDC power supply to the KSZ8895 when JP47 pin1-2 is closed.
b). 5 VDC power source from the USB port when JP47 pin 2-3 is closed.
5. The KSZ8895 will power up in its default configuration if there is no information in the
EEPROM.
6. Program the desired settings into the EEPROM using the Micrel software. See the software
description section 5.1 for details.
7. Press the manual reset button. The KSZ8895 will reset and read the new configuration in the
EEPROM. After reset, the KSZ8895 is ready for the operation with EEPROM configuration.

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 11 1/8/2013
4.3 SPI Mode
From SPI interface to the KSZ8895, use a USB to SPI converter that allows accessing all of the
KSZ8895 features and registers. The user can easily access the SPI interface using a computer
connected to the evaluation board’s USB port interface. Micrel provides a Windows 2000/XP based
program for the user to evaluate the KSZ8895’s full feature set. In addition to all the control
registers available via EEPROM programming, a host CPU connected to the KSZ8895’s SPI
interface will be able to access all static MAC table, the VLAN table, dynamic MAC address table
and the MIB counters.
To prepare the KSZ8895 evaluation board for SPI mode configuration follow these steps:
1. Copy the Micrel provided SPI interface software on your computer.
2. Set JP9 as specified in Table 4 for SPI mode configuration.
Table 4 SPI Mode Settings
Jumper Description Setting
JP1 EEPROM Open
JP2 EEPROM Open
JP3 MDC Open
JP4 MDIO Open
JP8 Serial Bus Config. (PS0) Open
JP9 Serial Bus Config. (PS1) Closed
3. Connect the computer’s USB port to the KSZ8895 board with a USB port cable.
4. There are two ways to power up the evaluation board:
a). Connect the 5 VDC power supply to the KSZ8895 when JP47 pin1-2 is closed (default).
b). 5 VDC power source from the USB port when JP47 pin 2-3 is closed.
5. The KSZ8895 will power up initial default configuration with the start switch in register 1 bit 0
= ‘0’ which means the switch is “off”. You can set the bit 0 =’1’ to start switch.
6. Open the Windows and navigate to the directory where the Window SPI file is stored. Click its
icon to invoke the software.
7. Program the desired settings using the Micrel SPI interface software. See the software
operation description section 5.2 for details.
4.4 10/100 Ethernet Ports
There are five 10/100 Ethernet ports on the KSZ8895 evaluation board. The ports J1, J2, J3, J4 and
J5 are the standard RJ45 connectors and using CAT-5 cables. Each port can be used as either an
uplink or downlink. All ports support auto MDI/MDIX so there is no need for cross over cables.
J1 = RJ45 connector for port 1
J2 = RJ45 connector for port 2
J3 = RJ45 connector for port 3
J4 = RJ45 connector for port 4
J5 = RJ45 connector for port 5

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 12 1/8/2013
4.5 LED indicators
Ethernet Port LEDs
There are five columns of LED indicators on the board, one column for each of the five ports. The
LED indicators are programmable to two different modes. You can program the LED mode through
a strap in option on JP23 or in register 11, bit 1. The mode definitions are shown in Table 5. There
are three LEDs per port. The naming convention is “LEDx_y”, where “x” is the port number, and
“y” is the number of the LED for that port.
Table 5 LED Modes
Mode 0 Mode1
LEDx_2 = Link/Act LEDx_2 = 100Link/Act
LEDx_1 = Full Duplex/Col LEDx_1 = 10Link/Act
LEDx_0 = Speed LEDx_0 = Full Duplex
LED1_y are assigned to Port1.
LED2_y are assigned to Port2.
LED3_y are assigned to Port3.
LED4_y are assigned to Port4.
LED5_y are assigned to Port5.
Power LED
The board also has a power LED D3 for the 3.3V power supply. D3 LED indicates 3.3V Power on
and off.
Interrupt LED
The board also has an Interrupt LED D2 for the Link status change when set the interrupt mask
register 125. D2 LED is turn on to indicate the interrupt to be asserted.
4.6 MII/RMII Ports Configuration
There are two MII/RMII ports on the KSZ8895. One port connects to the fifth MAC in the
KSZ8895, and we refer to it as the port 5 Switch SW5-MII/RMII port. The second MII port
connects to the fifth PHY in the KSZ8895. We refer to this as the PHY5 P5-MII/RMII port. Both
the Switch MII/RMII port and the PHY5 MII/RMII port configuration are set on the board by using
the MII Enable bit (register 2, bit 3) in conjunction with JP10 and JP11 as shown in Table 6.
The Switch MII/RMII port can be set to PHY mode, MAC mode or SNI mode. In PHY mode, the
Switch MII/RMII port will transmit and receive signals on J6 of the board’s male MII connector.

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 13 1/8/2013
This mode is usually used to connect the KSZ8895 to a CPU with MAC. In MAC mode, the Switch
MII/RMII port will transmit and receive signals on J7 of the board’s female MII connector. This
interface is normally used to connect the KS8895 to an external PHY. We also have provisions on
the board to support the SNI 7 wire interface. In SNI mode, the Switch MII port will transmit and
receive signals on header pins. The connections between the header pins and the SNI signals are
shown in the Table 7.
The PHY5 MII/RMII port is used to connect to an external MAC or CPU. This port is only in PHY
mode.
Table 6 MII Mode Settings
MII Enable Bit
(reg. 2, bit 3)
Pin 91
JP11
Pin 86
JP10
Pin 87
Switch SW5-
MII/RMII PHY[5] P5- MII/RMII
0 Open Open Disable, Outputs
Tri-stated Disable, Outputs Tri-stated
0 Open Close PHY mode MII or
RMII Disable, Outputs Tri-stated
0 Close Open MAC mode MII or
RMII Disable, Outputs Tri-stated
0 Closed Close PHY mode SNI Disable, Outputs
Tri-stated
1 Open Open Disabled Disabled
1 Open Close PHY mode MII or
RMII PHY mode MII or RMII
1 Close Open
MAC mode MII or
RMII PHY mode MII or RMII
1 Close Close PHY mode SNI PHY mode MII or
RMII
Table 7 SNI Header Pin Definitions
Header Pin SNI Signal KSZ8895 Signals
TP1 RXC SMRXC
TP2 CRS SMRXDV
TP3 TXC SMTXC
TP4 TXEN SMTXEN
TP5 TXD SMTXD0
TP6 RXD SMRXD0
TP7 COL SCOL

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 14 1/8/2013
4.6.1 Port 5 SW5-MII Jumper Configuration for KSZ8895MQ
Modes JP10 JP11 JP17 JP18
SW5-MII MAC
Mode with J7
used
Open Close Pin 2-3 Close Pin 1-2 Close
SW5-MII PHY
Mode with J6
used
Close Open Pin 2-3 Close Pin 1-2 Close
Table 8 Configure for SW5-MII
4.6.2 Port 5 P5-MII Jumper Configuration for KSZ8895MQ
Modes JP10 and JP11 JP24 JP27
Port 5 PHY
P5-MII with J8
used
Closed either JP10 or JP11 Pin 2-3 Close Pin 1-2 Close
Table 9 Configure for P5-MII
4.6.3 Port 5 SW5-RMII Jumper Configuration for KSZ8895RQ
Modes JP10 and JP11 JP41 JP17 JP18
SW5-RMII
MAC to MAC
mode with J6
used
Closed either
JP10 or JP11 Open is clock mode (Device’s clock source
comes from X1 pin
25MHz and SMRXC pin
provide 50MHz clock to
both RMII)
Pin 1-2 Close Pin 1-2-3
Open
SW5-RMII
MAC to PHY
mode with J7
used
Closed either
JP10 or JP11 Open is clock mode (Device’s clock source
comes from X1 pin
25MHz and SMRXC pin
provide 50MHz clock to
both RMII)
Pin 1-2 Close Pin 1-2-3
Open
SW5-RMII
MAC to MAC
mode with J6
used
Closed either
JP10 or JP11 Close is normal mode (Device’s clock source
comes from SMTXC pin
50MHz external
reference clock)
Pin 1-2-3
Open Pin 2-3 Close
SW5-RMII
MAC to PHY
mode with J7
used
Closed either
JP10 or JP11 Close is normal mode (Device’s clock source
comes from SMTXC pin
50MHz external
reference clock)
Pin 2-3 Close Pin 1-2-3
Open
Table 10 Configure for SW5-RMII

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 15 1/8/2013
4.6.4 Port 5 P5-RMII Jumper Configuration for KSZ8895RQ
Modes JP10 and JP11 JP41 JP24 JP27
P5-RMII PHY
to MAC mode
with J8 used
Closed either
JP10 or JP11 Either Open (clock mode) or Close (normal mode).
Note: In both modes, the
50MHz reference clock
can be provided from
PMRXC pin to PMTXC
pin and opposite RMII.
Pin 1-2 Close JP27 1-2-3
Open
Table 11 Configure for P5-RMII
4.7 MDC/MDIO Interface for MIIM Registers and SMI mode
From MDC/MDIO interface to the KSZ8895, use a USB to MDC/MDIO converter that allows
accessing all of PHY related registers and all of the KSZ8895 registers. The user can easily access
the MDC/MDIO interface using a computer connected to the evaluation board’s USB port interface.
Micrel provides Windows based programs for the user to evaluate for both MIIM and SMI. For the
MIIM software to be used all of PHY related registers, please use the software tool in the folder of
MDC_MDIO MIIM of the software directory. For the SMI software to be used all of registers,
please use the software tool in the folder of MDC_MDIO SMI of the software directory.
To prepare the KSZ8895 evaluation board for MDC/MDIO configuration, please follow these
steps:
1. Copy the Micrel provided software on your computer.
2. Set JP2, JP3 and JP4 as specified in Table 8 for MDC/MDIO configuration.
Table 12 MDC/MDIO Settings for MIIM and SMI
Jumper Description Setting
JP1 EEPROM Open
JP2 EEPROM/MIIM/SMI Close
JP3 MDC for MIIM/SMI Close
JP4 MDIO for MIIM/SMI Close
JP8 Serial Bus Config. (PS0) Open (Close for SMI)
JP9 Serial Bus Config. (PS1) Open
8. Connect the computer’s USB port to the KSZ8895 board with a USB port cable.
9. There are two ways to power up the evaluation board:
a). Connect the 5 VDC power supply to the KSZ8895 when JP47 pin1-2 is closed.
b). 5 VDC power source from the USB port when JP47 pin 2-3 is closed.
10. The KSZ8895 will power up initial default configuration with the start switch in register 1 bit 0
= ‘0’ which means the switch is “off”. You can set the bit 0 =’1’ to start switch in SMI mode.
11. Open the Windows and navigate to the directory where the Window MDC/MDIO files are
stored. Click its icon to invoke the software.
12. Program the desired settings using the Micrel MDC/MDIO software. See the software
operation description section for details.

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 16 1/8/2013
5.0 Software Description
5.1 Introducing Application Software Tools
The Design Kit provides some software tools to support SPI interface, EEPROM (I2C) and
MDC/MDIO access for MIIM registers and SMI interface. They are located folders in the software
tool directory as follows:
1. In folder of DOS SPI Tool, there is an 8895SPI_DOS.exe file which can be executed
directly. The tool is used to access all registers by SPI in a DOS Window.
2. In folder of MDC_MDIO SMI, there is a MicrelSMIIfApp.exe file which can be executed
directly by clicking its icon. The software tool is used to access all registers by MDC/MDIO
interface with SMI mode.
3. In folder of Window SPI_I2C_MIIM Tools, there is a MicrelSwitchPhyTools_1.xx.msi file
which is clicked to create two application files in the default folder of Micrel (or you
selected folder) and two icons on desktop, they need window drivers supported first, see 5.2
section for detail. One software tool is used to access all registers by SPI interface or is used
to read/write all control register on I2C EEPROM mapping. Another software tool is used to
access all MIIM registers for all PHYs.
5.2 Install Window Driver First
Before use the Window based application software tool, the support drivers need to be installed to
PC/Laptop first and this installation is just one times only. When connect one standard USB cable
with type A and type B connectors between the evaluation board and PC computer first time, the
Found New Hardware Wizard window will pop-up and then follow the instructions step by step as
below.

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 17 1/8/2013
. Choose ‘No, not this time’ radio button and click the ‘Next’ button.
Choose the ‘Install from a list or specific location (Advanced)’ radio button and click the ‘Next’ button.
Click the ‘Include this location in the search’ check box, and use ‘Browse’ button to select the

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 18 1/8/2013
‘C:\MicrelEthernetChipConfig\D2XXDriver\CDM 2.02.04 WHQL Certified’ directory and click the ‘Next’
button. The window will install the drivers from this location.
Click ‘Finish’ button. The Window will install another driver called ‘USB Serial Converter B’.
After the drivers installed, Window Device Manager will show ‘USB Serial Converter A’ and
‘USB Serial Converter B’ as below figure. That means the installation successful.

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 19 1/8/2013
5.3 DOS SPI Tool
This is a simple and powerful tool to access all register. The tool located in the folder of DOS SPI
Tool in the Software tools folder. There is an USBSPI.exe file which can be executed directly by
clicking its icon.
Before run the software tool, the JP9 should be closed, please check the SPI setting in 4.3 SPI mode
section. After click its icon, a DOS Window will pop up as follow:
Type a ‘help’ and press Enter, all commands will display as follows,
For Read or Write registers, reg is the offset address of the register, value is Hex number.
The ‘run file’ command can execute multiple commands by a script file, the script file is a .txt file
which can be created by any edit tools.
Ærun xxxx.txt //will run the .txt script file.

KSZ8895 Evaluation Board User’s Guide
Micrel Inc. Page 20 1/8/2013
5.4 MDC/MDIO MIIM Software Tool
5.4.1 MDC/MDIO MIIM software installation
The software tool can be used to access all MIIM registers for PHY based.
This install file of the software tool locates in folder of Window SPI_I2C_MIIM Tools in the
software tools folder of the Design Kit, there is MicrelSwitchPhyTools_1.xx.msi file which is
clicked to install application file and add two application icons on the desktop, this installation just
do one times only, the application file will be copied into the folder of
Micrel\MicrelSwitchPhyTools (default) or other assigned folder in the installation.
The MDC/MDIO MIIM Software Tool can be executed directly by clicking its application file or
icon with name of MicrelMDIOConfigWinApp on the desktop.
5.4.2 On board jumper setting and Software Application
Before run the software tool, the JP2, JP3 and JP4 should be closed, please check the MDC/MDIO
setting in section of 4.7 MIIM SMI mode section. After click its icon, a Window will pop up as
follow:
Select ‘KSZ8895MQ 5 port switch’ and click Next button, Pop up a MDIO MIIM Configuration
window as follows: