Micrel KSZ8864, Руководство пользователя

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KSZ8864 Evaluation Board User’s Guide
Micrel Inc. Page 9 5/9/2014
JP4 MDIO Open
JP8 Serial Bus Config. (PS0) Open
JP9 Serial Bus Config. (PS1) Open
3.
Connect the computer’s USB port to the KSZ8864 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 KSZ8864 when JP47 pin1-2 is closed.
b). 5 VDC power source from the USB port when JP47 pin 2-3 is closed.
5. The KSZ8864 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 5.6 for details.
7. Press the manual reset button. The KSZ8864 will reset and read the new configuration in the
EEPROM. After reset, the KSZ8864 is ready for normal operation.
4.3 SPI Mode
From SPI interface to the KSZ8864, use a USB to SPI converter that allows accessing all of the
KSZ8864 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 KSZ8864’s full feature set. In addition to all the control
registers available via EEPROM programming, a host CPU connected to the KSZ8864’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 KSZ8864 evaluation board for SPI mode configuration follow these steps:
1. Copy the Micrel provided SPI interface software on your computer.
2. Set JP3, JP4, JP5 and 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 KSZ8864 board with a USB port cable.
4. Remove the EEPROM from the evaluation board. (Optional)
5. There are two ways to power up the evaluation board:
a). Connect the 5 VDC power supply to the KSZ8864 when JP47 pin1-2 is closed.
b). 5 VDC power source from the USB port when JP47 pin 2-3 is closed.
6.
The KSZ8864 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.