L80223/D LSI, L80223/D Datasheet - Page 41

• Manufacturer Part Number: L80223/D
• Manufacturer: LSI

Specifications of L80223/D

• Lead Free Status / RoHS Status: Not Compliant

2.3.10.2 100BASE-TX Link Integrity Algorithm (100 Mbits/s)
2.3.10.3 AutoNegotiation Algorithm
Figure 2.6
+ 50 mV
Because the IEEE 802.3 specification defines 100BASE-TX to have an
active idle signal, the device uses the squelch criteria and descrambler
synchronization algorithm on the input data to determine if the device
has successfully established a link with a remote device (called Link
Pass state). Refer to IEEE 802.3 for more details if needed.
As stated previously, the AutoNegotiation algorithm is used for two
purposes:
The AutoNegotiation algorithm is the same algorithm defined in IEEE
802.3 Clause 28. AutoNegotiation uses a burst of link pulses, called fast
link pulses (FLPs), to pass up to 16 bits of signaling data back and forth
between the device and a remote device. The transmit FLP pulses meet
Block Diagram Description
50 mV
to establish a link to and from a remote device
to automatically configure the device for either 10 or 100 Mbits/s
operation and either Half- or Full-Duplex operation.
585 mV
3.1 V
Link Pulse Output Voltage Template (10 Mbits/s)
0 BT
0.25 BT
3.1 V
Copyright © 2000, 2001, 2002 by LSI Logic Corporation. All rights reserved.
0.5 BT
0.85 BT
0.5 V/ns
0.6 BT
2.0 BT
1.3 BT
200 mV
2.0 BT
300 mV
4.0 BT
4.0 BT
42.0 BT
+ 50 mV
50 mV
2-23