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VT6103 датащи(PDF) 39 Page - VIA Technologies, Inc. |
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VT6103 датащи(HTML) 39 Page - VIA Technologies, Inc. |
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39 / 46 page ![]() VT6103 - Fast Ethernet 10 / 100 PHY / Transceiver Revision 1.1 April 15, 2002 -33- Electrical Specifications Technologies, Inc. We Connect We Connect We Connect We Connect Crystal Oscillator Characteristics Symbol Parameter Min Typ Max Unit Comment Output Frequency 24.9975 25 25.0025 MHz Output Frequency Jitter - Short Term 50 ps Output Frequency Jitter - Long Term 500 ps PLL Frequency Multiplier Characteristics Symbol Parameter Min Typ Max Unit Comment PLL Loop Bandwidth 2.5 5 MHz PLL Acquisition Time 50 us 25% Frequency Change VCO Operating Frequency – 100Base Mode 250 MHz VCO Operating Frequency – 10Base Mode 200 MHz PLL Output Clock Jitter – Short Term 200 ps PLL Output Clock Jitter – Long Term 1000 ps FX Characteristics Symbol Parameter Min Typ Max Unit Comment VOH PECL Output Voltage High 2.28 2.35 2.42 Volts VOL PECL Output Voltage Low 1.49 1.58 1.68 Volts VIH PECL Input Voltage High 2.135 2.42 Volts VIL PECL Input Voltage Low 1.49 1.825 Volts FX Mode Enable Voltage (SD) 1.49 1.825 Volts Input Common Mode Range 1.3 2.8 Volts Input Differential Amplitude 0.15 Volts Output Jitter 1.4 ns |
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