UMAX141520 Version 1B
3-19
1. GENERAL INFORMATION
1.1 Introduction
The Ethernet to Automotive Ethernet Gigabit Converter, AX141520, has both Ethernet and Automotive
Ethernet Physical Layer transceivers (1000BASE-T and 1000BASE-T1 PHYs) that are used to achieve bi-
directional communication. The converter supports configuration via RS232 to update the speed
(100/1000Mbps) as well as to set the Automotive Ethernet PHY to Master/Slave mode. The AX141520 does
not store any packets and does not modify or filter any packets.
By default, both PHYs (Ethernet and the Automotive Ethernet) communicate at a speed of 1000Mbps, and
the Automotive Ethernet is configured to work in Slave mode. Status LEDs provide information on
Power
,
Connection Link
, and
Activity
.
Power LED will be ON as soon as power is supplied to the converter. The
Power
LED is used to verify
whether power is supplied to the converter. If the proper power supply level is connected to the converter,
the
Power
LED will be ON; indicating the converter is ON. The AX141520 is continuously monitoring the
status of Link and Activity by reading the registers of Ethernet PHYs and will show the real-time update of
Ethernet and Automotive Ethernet Link and Activity on
Link
and
Activity
LEDs, respectively.
1.2 Functional Block Diagram of the Converter
Figure 1 Functional Block Diagram
