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RTL8100B-LF Datasheet(PDF) 13 Page - Realtek Semiconductor Corp. |
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RTL8100B-LF Datasheet(HTML) 13 Page - Realtek Semiconductor Corp. |
13 / 66 page RTL8100B(L) Datasheet Single-Chip 10/100 Ethernet Controller w/Power Management 7 Track ID: JATR-1076-21 Rev. 1.5 5.6. Attachment Unit Interface Symbol Type Pin No Description TXD+ TXD- O O 72 71 100/10BASE-T transmit (Tx) data. RXIN+ RXIN- I I 68 67 100/10BASE-T receive (Rx) data. X1 I 61 25 MHz crystal/OSC. input. X2 O 60 Crystal feedback output: This output is used in crystal connection only. It must be left open when X1 is driven with an external 25 MHz oscillator. 5.7. Test And Other Pins Symbol Type Pin No Description RTT3 TEST 63 Chip test pin. RTSET I/O 65 This pin must be pulled low by a resistor. Please refer to the application circuit for correct value. VCTRL Analog 55 Use this pin and an external PNP type transistor to generate +2.5V for the RTL8100B(L). NC - 7, 35, 40, 52, 53, 54, 69, 76, 78 Reserved |
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