KSZ8873MLL/FLL/RLL Evaluation Board User’s Guide
Micrel, Inc.
January 11, 2011
Confidential
Rev. 1.1
8/10
5. The KSZ8873MLL/FLL/RLL will power up in its default configuration if there is no
information in the EEPROM.
6. Click the software icon to invoke the software to program the desired settings into the
EEPROM. See the Micrel Switch Configuration Software User Guide for details.
7. Press the manual reset button. The KSZ8873MLL/FLL/RLL will reset and read the new
configuration in the EEPROM. After reset, the KSZ8873MLL/FLL/RLL is ready for normal
operation.
Table 3: EEPROM Mode Settings
Jumper
Description
Setting
JP9
SPIQ
Closed
JP3
SCL_MDC_SW
Closed
JP34
SCL_MDC
Closed
JP35
SDA_MDIO
Closed
JP25
Serial Bus Config. (P2LED0)
Pins 2-3 closed
JP21
Serial Bus Config. (P2LED1)
Pins 2-3 closed
4.3 SPI Slave Mode
From SPI interface to the KSZ8873MLL/FLL/RLL, use a USB to SPI converter that
allows accessing all of the KSZ8873MLL/FLL/RLL 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 KSZ8873MLL/FLL/RLL’s full feature set. In addition to all the registers
available via EEPROM programming, a host CPU connected to the
KSZ8873MLL/FLL/RLL’s SPI interface will be able to access all static MAC entries, the
VLAN table, dynamic MAC address table and the MIB counters.
To prepare the KSZ8873MLL/FLL/RLL evaluation board for SPI mode
configuration follow these steps:
1. Install the Micrel Switch Configuration Software on your computer.
2. Set JP3, JP9, JP21, JP25, JP34 and JP35 as specified in Table 4 for SPI mode
configuration.
Table 4: SPI Slave Mode Settings
Jumper
Description
Setting
JP9
SPIQ
Open
JP3
SCL_MDC_SW
Open
JP34
SCL_MDC
Closed
JP35
SDA_MDIO
Closed
JP25
Serial Bus Config. (P2LED0)
Pins 2-3 closed
JP21
Serial Bus Config. (P2LED1)
Pins 1-2 closed
3.
Connect the computer’s USB port to the KSZ8873MLL/FLL/RLL board with a
