I347-AT4 Datasheet, PDF (24/148 Pages) Intel Corporation – Intel® Ethernet Network Connection I347-AT4 Datasheet

I347-AT4—Device Functionality
3.0
Device Functionality
The I347-AT4 is a 2- or 4-port 10/100/1000BASE-T Gigabit Ethernet transceiver. Each
port of the I347-AT4 can operate completely independent of each other, but they are
identical in performance and functionality. The functional description and electrical
specifications for the I347-AT4 are applicable to each port. For simplicity, the functional
description in this document describes the operation of a single transceiver.
Port numbers have been omitted from many diagrams and descriptive text indicating
that the functionality applies to all ports. In this document, the pins for each port are
specified by the port number, pin name, and signal number, respectively.
For example, LED 1 pin for Port 0 shown in Figure 3 (P0_LED[1]):
However, the MDIO pin supported by the I347-AT4 are global to the chip and do not
have port numbers. Figure 3 and Figure 4 show the functional block diagram of the
I347-AT4.
Bias/
Test
Configuration
LED
Management
Interface
JTAG
Clock/
Reset
Figure 3. Functional Block Diagram — Dual-Port Mode
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