KSZ8841-16MBL-EVAL MICREL [Micrel Semiconductor], KSZ8841-16MBL-EVAL Datasheet - Page 100

• Manufacturer Part Number: KSZ8841-16MBL-EVAL
• Description: Single-Port Ethernet MAC Controller with Non-PCI Interface
• Manufacturer: MICREL [Micrel Semiconductor]

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 for exceeding FCC requirements.
Table 27 gives recommended transformer characteristics.
Selection of Reference Crystal
October 2007
Micrel, Inc.
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 29. Typical Reference Crystal Characteristics
Table 28. Qualified Single Port Magnetics
Table 27. Transformer Selection Criteria
Part Number
H1102
H1260
HB726
S558-5999-U7
LF8505
LF-H41S
TLA-6T718
Value
1 CT : 1 CT
350 µ H
0.4 µ H
12pF
0.9 Ω
1.0dB
1500Vrms
100
Value
25
20
25
± 50
Auto MDI-X
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Test Condition
100mV, 100kHz, 8mA
1MHz (min)
0MHz – 65MHz
Units
MHz
ppm
pF
Ω
Number of Port
KSZ8841-16/32 MQL/MVL/MBL
1
1
1
1
1
1
1
M9999-102207-1.6