KSZ8895ML Evaluation Board User’s Guide
Micrel Inc. Confidential
Page 10
3/26/2014
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
Power LED
The board also has a power LED D2 for the 3.3V power supply. D2 LED indicates 3.3V Power on
and off.
4.6 MII Ports Configuration
There is one MII ports on the KSZ8895ML. This MII port connects to the fifth MAC in the
KSZ8895ML, and we refer to it as the port 5 Switch SW5-MII port. The SW5-MII can be
configured to MAC mode and PHY mode by jumpers of JP6 and JP7 as shown in Table 6.
The Switch MII port can be set to SNI mode also. In PHY mode, the Switch MII port will transmit
and receive signals on J7 of the board’s male MII connector. This mode is usually used to connect
the KSZ8895ML to a CPU with MAC. In MAC mode, the Switch MII port will transmit and
receive signals on J8 of the board’s female MII connector. This interface is normally used to
connect the KSZ8895ML 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.
