FLLXT1000BA.C4QE000 Intel, FLLXT1000BA.C4QE000 Datasheet - Page 40

• Manufacturer Part Number: FLLXT1000BA.C4QE000
• Manufacturer: Intel

Specifications of FLLXT1000BA.C4QE000

• Lead Free Status / RoHS Status: Not Compliant

LXT1000 — Gigabit Ethernet Transceiver
2.4.6.1
2.4.6.2
40
Taking Down
Figure 16. Overview of Link Establishment
Link
N
Detect 10 Mbps
Bit 0.8 sets Duplex
Send NLP
False Link
The LXT1000 does not falsely establish link with a partner operating at a different speed. For
example, the LXT1000 does not establish a Gigabit or 10M link with a 100M link partner.
Auto-Negotiation
Auto-negotiation allows the LXT1000 and its link partner to determine:
During auto-negotiation, the LXT1000 and its link partner exchange configuration information
using Fast Link Pulses (FLPs). This exchange of information allows them to determine the highest
common ability, and set the link state accordingly. The information exchanged is static; it is
determined before auto-negotiation begins and is not modified during the process. This process
ensures that each side clearly understands the other’s ability. The information to be sent is loaded
into MII Registers 4 and 9 before auto-negotiation begins. Once auto-negotiation completes, the
information received from the other side is placed in MII Registers 5 and 10. Each side then
compares its capabilities to its link partner’s to determine the link state.
10M
•
•
•
•
?
Link speed (1000, 100 or 10)
Link duplex state (full or half)
Flow-control support (PAUSE and ASM_DIR)
Master-Slave relationship for Gigabit links
0
Forced Operation
Bringing Up
Link
Speed?
Y
0.13
1
Taking Down
N
Link
N
Power-Up, Reset,
Link Failure
A/N Enabled
Bit 0.8 sets Duplex
Detect Idles
Send Idles
Start
100M
?
?
Bringing Up
Y
Link
Y
Auto-Negotiate/Parallel Detection
N
Parallel
Detect
Detect
Detect
MLT3
Idles
N
N
Send FLP
Y
Y
Detect
FLP
Document #: 249276
Rev. Date: 07/20/01
Half-Duplex
Half-Duplex
Revision #: 002
100M
Y
Negotiate
10M
Link
Link
Datasheet
Auto