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®
Intel
IQ80315 I/O Processor Evaluation Platform
2.6
Gigabit Ethernet
®
The Intel
MAC controllers. The IQ80315 CRB uses a Marvell* 88E1020 transceiver chip to implement the
Ethernet physical interface. Shorting the 88E1020 Config[4:0] inputs to V
LED outputs configures the following options at reset:
•
GMII interface to the 80314
•
Ethernet controller 0 PHY address = 00000
•
Ethernet controller 1 PHY address = 00001
•
Internal 1.5 V regulators are enabled
•
MDI crossover is enabled
•
125 MHz clock output is enabled
•
Auto-negotiation is enabled
•
A jumper option selects "Prefer Master" or "Prefer Slave" during auto negotiation (default
jumper setting is "Prefer Master")
A dual vertical RJ-45 LAN connector with integrated LEDs and magnetics is used for the LAN
connectors.
One green and one amber/green LED is built into each RJ-45 LAN connector.
LED states when the board is powered up and the Ethernet subsystem is operating.
Table 3.
Ethernet Connector LED States
LED
Speed (right)
Link / Active
(left)
Note:
To obtain the LED behavior described in
LED_LINK100 signals to the Speed LEDs, and the LED_TX signal to the Link/Active LED.
Program the Marvell* 88E1020 transceiver LED Link Control Register 24[3] = 0, and LED
Control Register 24[2:0] = 1 (Mode 2).
16
80314 I/O processor companion chip has two integrated 10/100/1000 Mbit/sec Ethernet
LED Color
LED State
–
Off
Green
On
Amber
On
–
Off
Green
On (steady state)
Green
Blinking
®
Intel
IQ80315 I/O Processor Evaluation Platform Board Manual
10 Mbit/sec data rate is selected.
100 Mbit/sec data rate is selected.
1000 Mbit/sec data rate is selected.
LAN link is not established.
LAN link is established.
The system is transmitting or receiving data.
Table
3, connect the LED_LINK1000 and
, GND, or one of the
CC
Table 3
describes the
Condition
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