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PDF LAN8720 Data sheet ( Hoja de datos )
| Número de pieza | LAN8720 | |
| Descripción | Small Footprint RMII 10/100 Ethernet Transceiver | |
| Fabricantes | SMSC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LAN8720 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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LAN8720/LAN8720i
Small Footprint RMII 10/100
Ethernet Transceiver with HP
Auto-MDIX Support
PRODUCT FEATURES
Highlights
Single-Chip Ethernet Physical Layer Transceiver
(PHY)
Comprehensive flexPWR® Technology
— Flexible Power Management Architecture
— Power savings of up to 40% compared to competition
— LVCMOS Variable I/O voltage range: +1.6V to +3.6V
— Integrated 1.2V regulator
HP Auto-MDIX support
Miniature 24 pin QFN lead-free RoHS compliant
package (4 x 4 x 0.85mm height).
Target Applications
Set-Top Boxes
Networked Printers and Servers
Test Instrumentation
LAN on Motherboard
Embedded Telecom Applications
Video Record/Playback Systems
Cable Modems/Routers
DSL Modems/Routers
Digital Video Recorders
IP and Video Phones
Wireless Access Points
Digital Televisions
Digital Media Adaptors/Servers
Gaming Consoles
POE Applications
Datasheet
Key Benefits
High-Performance 10/100 Ethernet Transceiver
— Compliant with IEEE802.3/802.3u (Fast Ethernet)
— Compliant with ISO 802-3/IEEE 802.3 (10BASE-T)
— Loop-back modes
— Auto-negotiation
— Automatic polarity detection and correction
— Link status change wake-up detection
— Vendor specific register functions
Power and I/Os
— Various low power modes
— Integrated power-on reset circuit
— Two status LED outputs
— Latch-Up Performance Exceeds 150mA per EIA/JESD
78, Class II
— May be used with a single 3.3V supply
Advanced Features
— Able to use a low cost 25Mhz crystal for the lowest
eBOM
Packaging
— 24-pin QFN (4x4 mm) Lead-Free RoHS Compliant
package with RMII
Environmental
— Extended Commercial Temperature Range (0°C to
+85°C)
— Industrial Temperature Range (-40°C to +85°C) version
available (LAN8720i)
SMSC LAN8720/LAN8720i
DATASHEET
Revision 1.0 (04-15-09)
1 page  
Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
Chapter 9 Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
SMSC LAN8720/LAN8720i
5
DATASHEET
Revision 1.0 (04-15-09)
5 Page 
Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
MODE0
MODE1
MODE2
nRST
MODE Control
Reset
Control
SMI
Auto-
Negotiation
Management
Control
10M Tx
Logic
10M
Transmitter
Transmit Section
100M Tx
Logic
100M
Transmitter
TXD[1:0]
TXEN
RXD[1:0]
RXER
CRS_DV
MDC
MDIO
100M Rx
Logic
DSP System:
Clock
Data Recovery
Equalizer
Receive Section
Analog-to-
Digital
100M PLL
10M Rx
Logic
10M PLL
Squelch &
Filters
HP Auto-MDIX
TXP / TXN
RXP / RXN
MDIX
Control
PLL
Interrupt
Generator
XTAL1/CLKIN
XTAL2
nINT
LED Circuitry
LED1
LED2
Central
Bias
PHY
Address
Latches
RBIAS
PHYAD0
Figure 1.2 LAN8720/LAN8720i Architectural Overview
SMSC LAN8720/LAN8720i
11
DATASHEET
Revision 1.0 (04-15-09)
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LAN8720.PDF ] | |
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