C O M P L E T E E M B E D D E D E T H E R N E T S O L U T I O N S

Silicon Labs’ Si3400 power over Ethernet (PoE) powered device controller (PD) converts

the high-voltage signal from a 10/100/1000BASE-T PoE connection into a regulated,

low-voltage output supply. With integrated diode bridges and transient surge suppressor,

the Si3400 enables direct connection of the IC to the Ethernet RJ-45 connector.

The CP220x single-chip embedded Ethernet controller contains an integrated IEEE 802.3

Ethernet media access controller (MAC), a 10BASE-T physical layer (PHY), and 8 kB of

non-volatile Flash memory. The CP220x adds Ethernet connectivity to any MCU or host

processor with 11 or more port I/O pins.

F E A T U R E S

PoE Powered Device Controller• Complete power management solution• Integrated diode bridges; transient surge suppressor• Switching regulator with integrated driver FET• Comprehensive protection including UVLO,

thermal overload, foldback current limiting, andprogrammable soft start

• IEEE 802.3af PD interface with hot swap switch• Support for non-isolated and isolated supply designs• Pb-free 5 x 5 mm 20-pin QFN package

Ethernet Controller• Integrated IEEE 802.3 MAC; 10BASE-T PHY• Fully compatible with

100/1000BASE-T networks• Full/half duplex with auto-negotiation• Automatic polarity detection and correction• Automatic retransmission on collision• Automatic padding and CRC generation• Supports broadcast and multi-cast

MAC addressing• Pb-free 5 x 5 mm 20-pin QFN package, or

Pb-free 9 x 9 mm 48-pin TQFP package

Software• CMX Micronet™ TCP/IP protocol stack provided

free of cost and royalties• TCP/IP configuration wizard• Supported by multiple Silicon Labs MCUs

A P P L I C A T I O N S• Voice over IP telephones and adapters• Wireless access points• Security cameras• Point-of-sale terminals• Internet appliances• Network devices• Remote sensing and monitoring• Inventory management• Network clocks• Embedded web server• Remote Ethernet-to-UART bridge

Embedded Ethernet Solutions

COMPLETE SOLUTIONS FOR

EMBEDDED ETHERNET SYSTEMS

S O L U T I O N S G U I D E

H I G H L Y- I N T E G R A T E D , G L O B A L L Y- C O M P L I A N T

IEEE 802.3af I/F:Detection,

Classification,UVLO

Switch Control &Current Limit

HotswapControl

&Common

Bias

SwitchingRegulatorController

Switching FET &Current Limit

CT1

SP1

SP2

VPOSF

VNEG

RDET RCL

HSO

SSFT

VSS2

EROUT

FBCT2

VPOSS

PLOSS

VDD

VSS1

RIMAX

SWO

Rectification& Protection

Si3400

HostMCU

HostInterface

8 kBUser

Flash

4 kBRx FIFO

EthernetPHY

ClockLED

Control

ParallelBus

Link

ActACTLED

LINKLED

RJ-45

20 MHz

2 kB

Tx Buffer

EthernetMAC

TX+/TX–

RX+/RX–

CP2200

P o E P D C O N T R O L L E R B L O C K D I A G R A M

E T H E R N E T C O N T R O L L E R B L O C K D I A G R A M

Embedded Ethernet Solutions

Silicon Laboratories and the Silicon Laboratories logo are trademarks of SiliconLaboratories Inc. All other product or service names are the property of theirrespective owners. PG, 5000, May 07, Rev B

Sample Embedded System

CP220xEthernet

Controller

C8051FMCU

WirelessRouter

(with PoE)

PC withBrowser

Si3400PoE PD

Controller±48 V

Data Data

VDD

VDDRJ-45

Designing Embedded Ethernet Systems Has Never Been EasierThe Si3400 PD controller is a complete power management solution for PD applications that supports both IEEE 802.3af compliant and pre-

standard products, while the CP220x Ethernet controller makes it easy to add Ethernet functionality to any design. Combined with Silcon Labs’

high-performance, mixed-signal MCUs, the low-cost Si844x digital isolators, and a full suite of evaluation kits development tools and

reference designs, designing embedded Ethernet systems has never been easier.

Ethernet Development KitThe Ethernet Development Kit provides all the necessary hardware and software to develop

real-world embedded systems using the CP2200, C8051F MCU and industry-proven CMX

Micronet™ protocol stack. Included in the kit is a CP2200 Ethernet development board,

100 MHz C8051F120 MCU target board, integrated development environment, a TCP/IP

configuration wizard that generates TCP/IP libraries, a USB debug adapter and all

necessary cables to debug the MCU and connect it to an Ethernet network.

CP2201EK Evaluation Kit• Demonstrates simplicity of adding Ethernet connectivity• Preconfigured applications include the following:

– Remote temperature and light sensing from browser– Sensor data transmission via email– Automatic network detection using netfinder utility

• CP2201 and C8051F340 on-board

Power Over Ethernet Reference Design• Demonstrates PoE functionality

– Power device directly from Ethernet cable or 9 V adapter– Can be used for code development

• Preconfigured PoE applications include the following:– Transmission of voice over network– Microphone sampling system using ADC– Remote temperature and light sensing from browser– Sensor data transmission via email– Automatic network detection using netfinder utility

• Si3400, CP2201 and C8051F340 on-board

SSiilliiccoonn LLaabboorraattoorriieess IInncc..400 West Cesar Chavez • Austin, TX 78701TToollll FFrreeee:: (877)444-3032EEmmaaiill:: PoEinfo@silabs.comWWeebb ssiittee:: www.silabs.com/Ethernet