Details

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BUY LAN8720AI-CP-TR https://www.utsource.net/itm/p/11265795.html

Parameter	Description	Value
Device Type	Ethernet Transceiver	10/100 Mbps
Package	QFN (Quad Flat No-Leads)	24-pin, 5x5 mm
Operating Voltage	VDD	3.3V ± 5%
Operating Temperature Range	Toperating	-40°C to +85°C
Data Rate	Ethernet Speed	10/100 Mbps
Interface	PHY Interface	MII (Media Independent Interface)
Wake-on-LAN	Support	Yes
Power Consumption	Active Mode	< 250 mW
Standby Power Consumption	Low-Power Mode	< 15 mW
EMI Performance	EMI Shielding	Integrated EMI Filter
ESD Protection	Human Body Model (HBM)	±4 kV
Package Marking	Part Number	LAN8720AI-CP-TR
RoHS Compliance	Environmental Standard	RoHS Compliant

Instructions for Use

1. Power Supply:

   • Connect the VDD pin to a 3.3V power supply with a tolerance of ±5%.
   • Ensure that the power supply is stable and has adequate decoupling capacitors (e.g., 10 μF and 0.1 μF) placed close to the VDD pin.

2. Grounding:

   • Connect all GND pins to a common ground plane to ensure proper signal integrity and reduce noise.

3. Ethernet Interface:

   • Connect the LAN8720AI-CP-TR to an RJ45 connector using the appropriate differential pairs (TX+/TX-, RX+/RX-).
   • Use a common-mode choke and magnetics between the transceiver and the RJ45 connector to filter out common-mode noise.

4. MII Interface:

   • Connect the MII interface pins (TXD[3:0], RXD[3:0], TX_EN, RX_DV, CRS, COL) to the corresponding pins on the MAC (Media Access Control) controller.
   • Ensure that the clock signals (TX_CLK, RX_CLK) are properly connected and synchronized.

5. Configuration:

   • Use the MDIO (Management Data Input/Output) and MDC (Management Data Clock) pins to configure the transceiver via the PHY register set.
   • Refer to the device datasheet for specific register addresses and configuration values.

6. Low-Power Mode:

   • To enter low-power mode, assert the PWRDN (Power Down) pin.
   • The transceiver will consume less than 15 mW in this mode.

7. Wake-on-LAN:

   • Enable Wake-on-LAN by configuring the appropriate registers.
   • The transceiver can wake up the system from a low-power state upon receiving a magic packet or link status change.

8. EMI Considerations:

   • Place the LAN8720AI-CP-TR as close as possible to the RJ45 connector to minimize trace lengths and reduce EMI.
   • Use a grounded metal shield over the transceiver if necessary to further reduce EMI.

9. Storage and Handling:

   • Store the device in a dry, cool place away from direct sunlight.
   • Handle the device with care to avoid static discharge, which can damage the sensitive components.

For more detailed information, refer to the official datasheet and application notes provided by the manufacturer.

(For reference only)