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E-STE10A Fiches technique(PDF) 10 Page - STMicroelectronics |
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E-STE10A Fiches technique(HTML) 10 Page - STMicroelectronics |
10 / 82 page Pin description STE10/100A 10/82 Physical interface 98 X1 I 25MHz reference clock input for physical portion. When an external 25MHz crystal is used, this pin will be connected to one of its terminals, and X2 will be connected to the other terminal. If an external 25 MHz oscillator is used, then this pin will be connected to the oscillator’s output pin. 97 X2 O 25MHz reference clock output for physical portion. When an external 25MHz crystal is used, this pin will be connected to one of the crystal terminals (see X1, above). If an external clock source is used, then this pin should be left open. 107,109 TX+, TX- O The differential transmit outputs of 100BASE-TX or 10BASE- T, these pins connect directly to magnetic. 105,104 RX+, RX- I The differential receive inputs of 100BASE-TX or 10BASE-T, these pins connect directly from magnetic. 101 Iref O Reference resistor connecting pin for reference current, directly connects a 5KOhm ±1% resistor to Vss. LED display & miscellaneous 90 LED M1- LK/Act or LED M2- Act O This pin can be programmed as mode 1 or mode 2: For mode 1: LED display for link and activity status. This pin will be driven on continually when a good Link test is detected. This pin will be driven at a 10Hz blinking frequency when either effective receiving or transmitting is detected. For mode 2: LED display for activity status. This pin will be driven at a 10Hz blinking frequency when either effective receiving or transmitting is detected. 92 LED M1- Speed or LED M2- 100 link O This pin can be programmed as mode 1 or mode 2: For mode 1: LED display for 100M b/s or 10M b/s speed. This pin will be driven on continually when the 100M b/s network operating speed is detected. For mode 2: LED display for 100Ms/s link status. This pin will be driven on continually when 100Mb/s network operating speed is detected. Table 1. Pin description (continued) Pin no. Name Type Description |
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