82573 Datasheet, PDF (28/39 Pages) Intel Corporation – GbE Controllers

82573—Datasheet
Table 17.
LED DC Specifications
Symbol
Parameter¹
Condition
Voh
Vol
Ioz
Ios
Cin/out
Output High Voltage
Output Low Voltage
3-state Output Leakage
Current
Output Short Current
Pin Capacitance²
at 12 mA
at 12 mA
Voh = VDD or VSS
VDD = 3.6 V, Vo = VDD,
VDD = 3.6 V, Vo = VSS
Input and bi-directional buffer
1. Outputs are inputs/outputs in test mode.
2. This parameter is characterized but not tested.
Min
2.4
3.5
External Interfaces
Max
0.4
±10
2.5
Unit
V
V
mV
µA
pF
3.5.1
Table 18.
3.5.2
Crystal
The quartz crystal is strongly recommended as a low cost and high performance choice
with the 82573 device. Quartz crystals are the mainstay of frequency control
components and are available from numerous vendors in many package types with
various specification options.
Crystal Specifications
Parameter Name
Symbol
Frequency
f_o
Vibration mode
-
Frequency Tolerance
Temperature Tolerance
Operating Temperature
Equivalent Series
Resistance (ESR)
∆f/f_o at 25 °C
∆f/f_o
T_opr
R_s
Load Capacitance
Shunt Capacitance
Max Drive Level
C_load
C_o
DL
Nominal Drive Level
DL
Aging
Board Capacitance
External Capacitors
f/f_o
C_s
C1, C2
Board Resistance
R_s
1. This value can change up to 10%.
Recommended Value
25.000 MHz
Fundamental
±30 ppm
±30 ppm
0 °C to +70 °C
Max/Min Range
-
-
40 Ω
50 Ω (max)
20 pF
6 pF
500 µW
200 µW
±5 ppm per year
4 pF
22 pF
0.1 Ω
1 mW
500 µW
±5 ppm per year
1
1Ω
Conditions
at 25 °C
-
at 25 °C
-
-
at 25 MHz
-
-
-
-
-
-
-
-
External Clock Oscillator
If an external oscillator is used to provide a clock to the 82573, the connection shown
in the figure below must be used. The XTAL2 output signal of the 82573 must not be
connected. The XTAL1 input signal receives the output of the oscillator directly. AC
coupling is not recommended.
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