KSZ8041NL-EVAL Micrel Inc, KSZ8041NL-EVAL Datasheet - Page 53

• Manufacturer Part Number: KSZ8041NL-EVAL
• Description: BOARD EVALUATION FOR KSZ8041NL
• Manufacturer: Micrel Inc

Specifications of KSZ8041NL-EVAL

• Main Purpose: Interface, Ethernet PHY
• Embedded: No
• Utilized Ic / Part: KSZ8041NL
• Primary Attributes: Single Chip PHY, 10BASE-T/100BASE-TX
• Secondary Attributes: MII, RMII, HP Auto MDI, MDI-X Auto Polarity Correction
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-1621

Micrel, Inc.
Selection of Isolation Transformer
A 1:1 isolation transformer is required at the line interface. An isolation transformer with integrated common-mode chokes
is recommended for exceeding FCC requirements.
The Table 17 gives recommended transformer characteristics.
Selection of Reference Crystal
September 2010
Parameter
Turns ratio
Open-circuit inductance (min.)
Leakage inductance (max.)
Inter-winding capacitance (typ.)
D.C. resistance (typ.)
Insertion loss (max.)
HIPOT (min.)
Characteristics
Frequency
Frequency tolerance (max)
Load capacitance
Series resistance
Magnetic Manufacturer
Bel Fuse
Bel Fuse (Mag Jack)
Bel Fuse (Mag Jack)
Delta
LanKom
Pulse
Pulse (low cost)
Transpower
TDK (Mag Jack)
Table 19. Typical Reference Crystal Characteristics
Table 18. Qualified Single Port Magnetics
Table 17. Transformer Selection Criteria
Part Number
S558-5999-U7
SI-46001
SI-50170
LF8505
LF-H41S
H1102
H1260
HB726
TLA-6T718
12pF
Value
1 CT : 1 CT
350μH
0.4μH
0.9Ω
-1.0dB
1500Vrms
Value
53
±50
20
40
25
Auto MDI-X
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Test Condition
100mV, 100kHz, 8mA
1MHz (min.)
0MHz – 65MHz
Number of Port
1
1
1
1
1
1
1
1
1
Units
MHz
ppm
pF
Ω
M9999-090910-1.4
KSZ8041NL/RNL