Mikroelektronika MIKROE-742 데이터 시트

The ENC28J60 is a stand-alone Ethernet controller with an industry standard Seri-
al Peripheral Interface (SPI™). It is designed to serve as an Ethernet network inter-
face for any controller equipped with SPI. 

The ENC28J60 meets all of the IEEE 802.3 specifications. It incorporates a number
of packet filtering schemes to limit incoming packets. It also provides an internal
DMA module for fast data throughput and hardware assisted IP checksum calcula-
tions. Communication with the host controller is implemented via two interrupt pins
and the SPI, with data rates of up to 10 Mb/s. Two dedicated pins are used for LED
link and network activity indication.

This library is designed to simplify handling of the underlying hardware (ENC28J60).
It works with any AVR MCU with integrated SPI and more than 4 Kb ROM memory.

SPI Ethernet library supports: 

- IPv4 protocol. 
- ARP requests. 
- ICMP echo requests. 
- UDP requests. 
- TCP requests (no stack, no packet reconstruction). 
- packet fragmentation is NOT supported. 

Note: Prior to calling any of this library routines, Spi_Rd_Ptr needs to be initialized
with the appropriate SPI_Read routine.

Note: The appropriate hardware SPI module must be initialized before using any of
the SPI Ethernet library routines. Refer to SPI Library.

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- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 6