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RTL8201DL-GR Datasheet(PDF) 13 Page - Realtek Semiconductor Corp. |
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RTL8201DL-GR Datasheet(HTML) 13 Page - Realtek Semiconductor Corp. |
13 / 41 page RTL8201DL Datasheet Single-Chip/Port 10/100 Fast Ethernet PHYceiver with Auto MDIX 7 Track ID: JATR-1076-21 Rev. 1.0 6.4. Clock Interface Table 4. Clock Interface Name Type Pin No. Description CKXTAL2 O 46 25MHz Crystal Output. This pin provides the 25MHz crystal output. It must be left open when an external 25MHz oscillator drives X1. CKXTAL1 I 47 25MHz Crystal Input. This pin provides the 25MHz crystal input. If a 25MHz oscillator is used, connect CKXTAL1 to the oscillator’s output (see 9.3 Crystal Characteristics, page 32, for clock source specifications). 6.5. 10Mbps/100Mbps Network Interface Table 5. 10Mbps/100Mbps Network Interface Name Type Pin No. Description TPTX+ TPTX- O O 3 4 Transmit Output. Differential transmit output pair shared by 100Base-TX, 100Base-FX and 10Base- T modes. When configured as 100Base-TX, output is an MLT-3 encoded waveform. When configured as 100Base-FX, the output is pseudo-ECL level. RSET I 1 Transmit Bias Resistor Connection. This pin should be pulled to GND by a 2KΩ (1%) resistor to define driving current for the transmit DAC. The resistance value may be changed, depending on experimental results of the RTL8201DL. TPRX+ TPRX- I I 6 7 Receive Input. Differential receive input pair shared by 100Base-TX, 100Base-FX, and 10Base-T modes. 6.6. Device Configuration Interface Table 6. Device Configuration Interface Name Type Pin No. Description PHYAD[2:0] I 42, 43, 44 PHY Address. Set the PHY address for the device. CRS/RPTR LI/O 37 Repeater Mode. Set high to put the RTL8201DL into repeater mode. This pin can be directly connected to GND or VCC. COL/SNI LI/O 36 MII/SNI Interface. This pin is latched to input during a power on or reset condition. Pull high to set the RTL8201DL into SNI mode operation. Set low for MII mode. This pin can be directly connected to GND or VCC. ANE LI 30 Auto-Negotiation Mode. This pin is latched to input during a power on or reset condition. Set high to enable Auto-negotiation mode, set low to force mode. This pin can be directly connected to GND or VCC. |
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