RTL8201CP
Datasheet
Reception Without Error
Figure 16. MDC/MDIO PHY to MAC Reception Without Error
8.3. Crystal Characteristics
Parameter
Nominal Frequency
Oscillation Mode
Frequency Tolerance at 25°C
Operating Temperature Range
Equivalent Series Resistance
Drive Level
Load Capacitance
Shunt Capacitance
Insulation Resistance
Test Impedance Meter
Aging Rate Per Year
Table 38. Crystal Characteristics
Range
25.000MHz
Base wave
±50 ppm
-10°C ~ +70°C
30 ohm Max.
0.1 mV
20 pF
7 pF Max.
Mega ohm Min./DC 100V
Saunders 250A
±0.0003%
8.4. Transformer Characteristics
Parameter
Turn Ratio
Inductance (min.)
Leakage Inductance
Capacitance (max)
DC Resistance (max)
Table 39. Transformer Characteristics
Transmit End
Receive End
1:1 CT
1:1
350 uH @ 8mA
350 uH @ 8mA
0.05-0.15 uH
0.05-0.15 uH
15 pF
15 pF
0.4 ohm
0.4 ohm
Note: To enable the Auto-Crossover Detection Function, a transformer with symmetrical TX/RX
schematics plus TX Center Tap shorted to RX Center Tap is necessary, i.e. Pulse Engineer H1245 (refer to
the suggested RTL8201CP Schematic available for download at www.realtek.com.tw).
Single-Chip/Port 10/100 Fast Ethernet PHYceiver
30
Track ID: JATR-1076-21 Rev. 1.21
ETC [ ETC ]
