CP220x Ethernet Controller ICs​

The Silicon Labs CP220x family is the industry’s smallest single-chip Ethernet controller containing an integrated Media Access Controller (MAC) and Physical Layer (PHY). The CP220x single-chip Ethernet controller contains an integrated IEEE 802.3-compliant Media Access Controller (MAC), a 10Base-T Physical Layer (PHY), and 8 kB of non-volatile Flash memory available in either a 28-pin QFN (5x5 mm) or 48-pin TQFP (9x9 mm) package. The CP220x can add Ethernet connectivity to any MCU or host processor with 11 or more port I/O pins. The 8-bit parallel external memory interface bus supports both industry-standard Intel and Motorola bus formats in multiplexed and non-multiplexed mode. The CP2201 28-pin QFN package supports multiplexed addressing only. Mode select pins are used to select the bus interface mode. 




  • IEEE 802.3 MAC and 10 BASE-T PHY
  • Fully compatible with 100/1000 BASE-T
  • Full/Half duplex with auto-negotiation
  • Automatic polarity detection and correction
  • Hardware diagnostic software

Product Matrix

Part Number Data Sheet Parallel Host Interface Parallel Host Interface Speed (Mbps) Flash RAM Transceiver Auto-Negotiation Pre-Programmed MAC Address Package Type Package Size (mm) Temperature Range (°C) LEDs
CP2200 (NRND)
8-bit non-multiplexed EMIF 30 8 2 kB TX buffer; 4 kB RX buffer Yes Yes Yes TQFP48 9x9 -40 85 Separate link and activity
CP2201 (NRND)
8-bit multiplexed EMIF 25 8 2 kB TX buffer; 4 kB RX buffer Yes Yes Yes QFN28 5x5 -40 85 Combined link and activity
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