參數(shù)資料
型號(hào): 82541ER
廠商: Intel Corp.
英文描述: 82541ER Gigabit Ethernet Controller
中文描述: 82541ER千兆位以太網(wǎng)控制器
文件頁數(shù): 28/48頁
文件大?。?/td> 284K
代理商: 82541ER
82541ER Gigabit Ethernet Controller
22
Datasheet
Table 14. Reference Crystal Specification Requirements
Specification
Value
Vibrational Mode
Fundamental
Nominal Frequency
25.000 MHz at 25° C
Frequency Tolerance
±30 ppm
Temperature Stability
±30 ppm at 0° C to 70° C
Calibration Mode
Parallel
Load Capacitance
20 pF to 24 pF
Shunt Capacitance
6 pF maximum
Series Resistance, Rs
50 W maximum
Drive Level
0.5 mW maximum
Aging
±5.0 ppm per year maximum
Insulation Resistance
500 M
at DC 100 V
Table 15. Link Interface Clock Requirements
Symbol
Parameter
Min
Typ
Max
Unit
fGTX
a
GTX_CLK frequency
125
MHz
a. GTX_CLK is used externally for test purposes only.
Table 16. EEPROM Interface Clock Requirements
Symbol
Parameter
Min
Typ
Max
Unit
fSK
Microwire EEPROM Clock
1
MHz
SPI EEPROM Clock
2
MHz
Table 17. AC Test Loads for General Output Pins
Symbol
Signal Name
Value
Units
CL
TDO
10
pF
CL
SDP[3:0]
16
pF
CL
EEDI, EESK
18
pF
CL
LED[3:0]
20
pF
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