LAN9218I-MT-E2 SMSC [SMSC Corporation], LAN9218I-MT-E2 Datasheet - Page 129

• Manufacturer Part Number: LAN9218I-MT-E2
• Description: High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX & Industrial Temperature Support
• Manufacturer: SMSC [SMSC Corporation]

High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX & Industrial Temperature Support
Datasheet
SMSC LAN9218I
7.5
Transmitter Peak Differential
Output Voltage
Receiver Differential Squelch
Threshold
PARAMETER
Frequency Stability Over Temp
Frequency Tolerance @ 25° C
Note 7.6
The LAN9218I can accept either a 25MHz crystal (preferred) or a 25 MHz clock oscillator (±50 PPM)
input. The LAN9218I shares the 25MHz clock oscillator input (CLKIN) with the crystal input
XTAL1/CLKIN (pin 6).
The Input Clock Duty Cycle is 40% minimum, 50% typical and 60% maximum.
It is recommended that a crystal utilizing matching parallel load capacitors be used for the LAN9218I
crystal input/output signals (XTAL1, XTAL2). See
specifications.
Clock Circuit
Operating Temp Range
Shunt Capacitance
Load Capacitance
Drive Level
Measured at the line side of the transformer, line replaced by 100Ω (+/- 1%) resistor.
Table 7.6 10BASE-T Transceiver Characteristics
SYMBOL
V
Table 7.7 Crystal Specifications
V
OUT
DS
DATASHEET
MIN
300
2.2
129
TYP
420
2.5
Table 7.7, "Crystal Specifications"
MAX
585
2.8
20 pF ~ Parallel
-40 to 85° C
±50 PPM
±50 PPM
0.5 mW
7.0 pF
UNITS
mV
V
Revision 1.5 (07-18-06)
Note 7.6
NOTES
for crystal