Zilog EZ80L92 User Manual
Page 51
eZ80L92 Development Kit
User Manual
UM012913-0407
Operational
Description
47
PD7 for LANACT (wake-up from sleep) and SLEEP is optional and
resistor-selectable onboard (see below). Details about the internal regis-
ters of the CS8900A EMAC can be found on the Cirrus Logic website at
.
Ethernet LEDs
There are two green LEDs, a Link LED and a LAN LED, that are located
adjacent to each other on the eZ80L92 Module. A steady LAN LED
indicates received link pulses from the 10 Base-T Ethernet. This LAN
LED should be ON if RX+ is connected to TX+ and RX– is connected to
TX–. A flashing Link LED indicates Traffic (RX or TX) on the LAN.
Ethernet Connector
The eZ80L92 Development Kit is equipped with an RJ-45 connector that
features integrated magnetics (transformer, common mode chokes). The
remaining pins on the onboard RJ-45 connector are not connected.
An RJ-45 loopback connector can be used to verify the correct operation
of the Receiver and the Transmitter. Pin assignments for the RJ-45
Ethernet connector are shown in
To connect the eZ80L92 Development Kit directly to another host (for
example, to a personal computer), a crossover cable must be used.
Table 27. Ethernet Connector Pin Assignments
Pin
Function
1
TX+
2
TX–
3
RX+
6
RX–