LAN9218-MT SMSC, LAN9218-MT Datasheet - Page 132

• Manufacturer Part Number: LAN9218-MT
• Description: CONTROLLER, ENET, 10/100, 100TQFP
• Manufacturer: SMSC

Specifications of LAN9218-MT

• Data Rate: 100Mbps
• No. Of Ports: 2
• Ethernet Type: IEEE 802.3 / 802.3u
• Supply Current: 40mA
• Supply Voltage Range: 2.97V To 3.63V
• Operating Temperature Range: 0°C To +70°C
• Digital Ic Case Style: TQFP
• Interface Type: HBI
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Revision 1.93 (11-27-07)
7.6
Transmitter Peak Differential
Output Voltage
Receiver Differential Squelch
Threshold
Crystal Cut
Crystal Oscillation Mode
Crystal Calibration Mode
Frequency
Frequency Tolerance @ 25
Frequency Stability Over Temp
Frequency Deviation Over Time
Total Allowable PPM Budget
Shunt Capacitance
Load Capacitance
Drive Level
Equivalent Series Resistance
Operating Temperature Range
LAN9218 XTAL1/CLKIN Pin
Capacitance
LAN9218 XTAL2 Pin
Capacitance
PARAMETER
PARAMETER
Note 7.11 Measured at the line side of the transformer, line replaced by 100Ω (+/- 1%) resistor.
The LAN9218 can accept either a 25MHz crystal (preferred) or a 25 MHz single-ended clock oscillator
(±50 PPM) input. The LAN9218 shares the 25MHz clock oscillator input (CLKIN) with the crystal input
XTAL1/CLKIN (pin 6). If the single-ended clock oscillator method is implemented, XTAL2 should be left
unconnected and CLKIN should be driven with a nominal 0-3.3V clock signal. 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 LAN9218
crystal input/output signals (XTAL1, XTAL2). See
crystal specifications. Refer to application note AN10.7 - “Parallel Crystal Circuit Input Voltage Control”
for additional information.
Note 7.12 The maximum allowable values for Frequency Tolerance and Frequency Stability are
Clock Circuit
application dependant. Since any particular application must meet the IEEE +/-50 PPM
o
C
Table 7.6 10BASE-T Transceiver Characteristics
Table 7.7 LAN9218 Crystal Specifications
SYMBOL
SYMBOL
F
F
F
F
P
C
temp
C
R
V
fund
age
V
tol
W
O
L
1
OUT
DS
DATASHEET
MIN
300
2.2
MIN
0.5
0
-
Parallel Resonant Mode
-
-
-
-
-
-
-
-
-
132
Fundamental Mode
TYP
420
2.5
High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX
AT, typ
+/-3 to 5
Table 7.7, "LAN9218 Crystal Specifications"
25.000
20 typ
NOM
7 typ
3 typ
3 typ
-
-
-
-
-
-
MAX
585
2.8
+/-50
+/-50
+/-50
MAX
+70
30
UNITS
-
-
-
-
-
-
-
mV
V
UNITS
PPM
PPM
PPM
PPM
Ohm
MHz
mW
pF
pF
o
pF
pF
C
Note 7.11
SMSC
NOTES
Note 7.12
Note 7.12
Note 7.13
Note 7.14
Note 7.15
Note 7.15
NOTES
Datasheet
LAN9218
for