KSZ8842-16MBL-EVAL MICREL [Micrel Semiconductor], KSZ8842-16MBL-EVAL Datasheet - Page 135
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KSZ8842-16MBL-EVAL
Manufacturer Part Number
KSZ8842-16MBL-EVAL
Description
2-Port Ethernet Switch with Non-PCI Interface
Manufacturer
MICREL [Micrel Semiconductor]
Datasheet
1.KSZ8842-16MBL-EVAL.pdf
(141 pages)
- Current page: 135 of 141
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Selection of Isolation Transformers
A 1:1 isolation transformer is required at the line interface. An isolation transformer with integrated common-mode choke
is recommended to exceed FCC requirements.
Table 35 gives recommended transformer characteristics.
Selection of Reference Crystal
Micrel, Inc.
October 2007
Parameter
Turns ratio
Open-circuit inductance (min)
Leakage inductance (max)
Inter-winding capacitance (max)
D.C. resistance (max)
Insertion loss (max)
HIPOT (min)
Chacteristics
Frequency
Frequency tolerance (max)
Load capacitance (max)
Series resistance
Magnetic Manufacturer
Pulse
Pulse (low cost)
Transpower
Bel Fuse
Delta
LanKom
TDK (Mag Jack)
Table 37. Typical Reference Crystal Characteristics
Table 35. Transformer Selection Criteria
Table 36. Qualified Single Port Magnetic
Part Number
H1102
H1260
HB726
S558-5999-U7
LF8505
LF-H41S
TLA-6T718
135
Value
1 CT : 1 CT
350µH
0.4µH
12pF
0.9Ω
1.0dB
1500Vrms
Value
25
±50
20
25
Auto MDI-X
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Test Condition
100mV, 100kHz, 8mA
1MHz (min)
0MHz – 65MHz
Units
MHz
ppm
pF
Ω
KSZ8842-16/32 MQL/MVL/MVLI/MBL
Number of Port
1
1
1
1
1
1
1
M9999-102207-1.9
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