LAN9210-ABZJ SMSC, LAN9210-ABZJ Datasheet - Page 143
LAN9210-ABZJ
Manufacturer Part Number
LAN9210-ABZJ
Description
IC ETHERNET CTLR SGL CHIP 56-QFN
Manufacturer
SMSC
Datasheet
1.LAN9210-ABZJ.pdf
(147 pages)
Specifications of LAN9210-ABZJ
Controller Type
Ethernet Controller
Interface
Serial EEPROM
Voltage - Supply
3.3V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
56-QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Supply
-
Other names
638-1048-6
Available stocks
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Part Number:
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Small Form Factor Single-Chip Ethernet Controller with HP Auto-MDIX Support
Datasheet
SMSC LAN9210
7.7
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
LAN9210 XTAL1/CLKIN Pin
Capacitance
LAN9210 XTAL2 Pin
Capacitance
PARAMETER
The LAN9210 can accept either a 25MHz crystal (preferred) or a 25 MHz single-ended clock oscillator
(±50 PPM) input. The LAN9210 shares the 25MHz clock oscillator input (CLKIN) with the crystal input
XTAL1/CLKIN. 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 LAN9210
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 7.11 The maximum allowable values for Frequency Tolerance and Frequency Stability are
Note 7.12 Frequency Deviation Over Time is also referred to as Aging.
Note 7.13 The total deviation for the Transmitter Clock Frequency is specified by IEEE 802.3u as
Note 7.14 This number includes the pad, the bond wire and the lead frame. PCB capacitance is not
Clock Circuit
application dependant. Since any particular application must meet the IEEE +/-50 PPM
Total PPM Budget, the combination of these two values must be approximately +/-45 PPM
(allowing for aging).
+/- 50 PPM.
included in this value. The XTAL1/CLKIN and XTAL2 pin and PCB capacitance values are
required to accurately calculate the value of the two external load capacitors. These two
external load capacitors determine the accuracy of the 25.000 MHz frequency.
o
C
Table 7.7 LAN9210 Crystal Specifications
SYMBOL
F
F
F
F
P
C
temp
C
R
fund
age
tol
W
O
L
1
DATASHEET
MIN
300
0
Parallel Resonant Mode
-
-
-
-
-
-
-
-
-
-
143
Fundamental Mode
AT, typ
+/-3 to 5
Table 7.7, "LAN9210 Crystal Specifications"
25.000
20 typ
NOM
7 typ
3 typ
3 typ
-
-
-
-
-
-
+/-50
+/-50
+/-50
MAX
+70
50
-
-
-
-
-
-
-
UNITS
PPM
PPM
PPM
PPM
Ohm
MHz
uW
pF
pF
o
pF
pF
C
Revision 2.7 (03-15-10)
Note 7.11
Note 7.11
Note 7.12
Note 7.13
Note 7.14
Note 7.14
NOTES
for
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