WJLXT972MLC.A4 S L7U9 Intel, WJLXT972MLC.A4 S L7U9 Datasheet - Page 57

• Manufacturer Part Number: WJLXT972MLC.A4 S L7U9
• Manufacturer: Intel

Specifications of WJLXT972MLC.A4 S L7U9

• Lead Free Status / RoHS Status: Compliant

6.0
6.1
6.2
Datasheet
Document Number: 302875-005
Revision Date: 27-Oct-2005
Table 19. Magnetics Requirements
Table 20. I/O Pin Comparison of NIC and Switch RJ-45 Setups
Note: Before committing to a specific component, contact the manufacturer for current product
Application Information
Magnetics Information
The LXT972M Transceiver requires a 1:1 ratio for both the receive and transmit transformers. The
transformer isolation voltage should be rated at 2 kV to protect the circuitry from static voltages
across the connectors and cables. For transformer/magnetics requirements, see
specifications and validate the magnetics for the specific application.
Typical Twisted-Pair Interface
Table 20
typical twisted-pair interface setting.
Rx turns ratio
Tx turns ratio
Insertion loss
Primary inductance
Transformer isolation
Differential to common mode rejection
Return Loss
Symbol
TPOP
TPON
TPIP
TPIN
provides a comparison of the RJ-45 connections for NIC and Switch applications in a
Parameter
Switch
1
2
3
6
Intel
RJ-45
®
LXT972M Single-Port 10/100 Mbps PHY Transceiver
Min
350
-16
-10
0.0
40
35
–
–
–
NIC
3
6
1
2
Nom
1 : 1
1 : 1
0.6
1.5
–
–
–
–
–
Max
1.1
–
–
–
–
–
–
–
–
Units
μ H
dB
kV
dB
dB
dB
dB
–
–
Table
Test Condition
60 to 100 MHz
0.1 to 60 MHz
30 MHz
80 MHz
19.
–
–
–
–
–
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