L80223 LSI, L80223 Datasheet - Page 48

• Manufacturer Part Number: L80223
• Manufacturer: LSI

Specifications of L80223

• Lead Free Status / RoHS Status: Not Compliant

2.4 Start of Packet
2.4.1 100 Mbits/s
2-30
The default Normal Functions for PLED[5:0]n are Receive Activity,
Transmit Activity, Link 100, Activity, Full Duplex, and Link 10, respectively.
Table 2.8
This section describes start of packet operation for both the 100 Mbits/s
and 10 Mbits/s modes.
A unique Start of Stream Delimiter (SSD) indicates the start of packet for
100 Mbits/s mode. The SSD pattern consists of two /J/K/ 5B symbols
inserted at the beginning of the packet in place of the first two preamble
symbols, as defined in IEEE 802.3 Clause 24 and shown in
and
The 4B5B encoder generates the transmit SSD and inserts the /J/K/
symbols at the beginning of the transmit data packet in place of the first
two 5B symbols of the preamble, as shown in
Functional Description
Symbol
RCV ACT
XMT ACT
LINK
LINK+ACT
ACT
LINK100
COL
FDX
10/100
LINK10
Figure
2.2.
LED Event Definition
Definition
Receive activity occurred; stretch pulse to 100 ms
Transmit activity occurred; stretch pulse to 100 ms
100 or 10 Mbits/s link detected
100 or 10 Mbits/s link detected or activity occurred; stretch
pulse to 100 ms (link detect causes LED to be on, activity
causes LED to blink)
Activity occurred; stretch pulse to 100 ms
100 Mbit/s link detected
Collision occurred; stretch pulse to 100 ms
Full-Duplex mode enabled
10 Mbits/s mode enabled (HIGH), or 100 Mbits/s mode
enabled (LOW)
10 Mbits/s link detected
Copyright © 2000, 2001, 2002 by LSI Logic Corporation. All rights reserved.
Figure
2.2.
Table 2.4