Mikroelektronika MIKROE-724 データシート

mikroBasic PRO for dsPIC30/33 and PIC24

MikroElektronika

475

The 

ENC28J60

 is a stand-alone Ethernet controller with an industry standard Serial Peripheral Interface (SPI). It is 

designed to serve as an Ethernet network interface 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 

calculations. 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 dsPIC30/33 

and PIC24 with integrated SPI and more than 4 Kb ROM memory. 38 to 40 MHz clock is recommended to get from 8 

to 10 Mhz SPI clock, otherwise dsPIC30/33 and PIC24 should be clocked by 

ENC28J60

 clock output due to its silicon 

bug in SPI hardware. If you try lower dsPIC30/33 and PIC24 clock speed, there might be board hang or miss some 

requests.

SPI Ethernet library supports: 

 

- IPv4 protocol. 

 

- ARP requests. 

 

- ICMP echo requests. 

 

- UDP requests. 

 

- TCP requests (no stack, no packet reconstruction). 

 

- ARP client with cache. 

 

- DNS client. 

 

- UDP client. 

 

- DHCP client. 

 

- packet fragmentation is 

NOT supported. 

Important: 

- Global library variable 

SPI_Ethernet_userTimerSec

 is used to keep track of time for all client implementations  

  (ARP, DNS, UDP and DHCP). It is user responsibility to increment this variable each second in it’s code if any of the  

  clients is used. 

- For advanced users there is 

__EthEnc28j60Private.mbas

 unit in Uses folder of the compiler with description of  

  all routines and global variables, relevant to the user, implemented in the SPI Ethernet Library. 

- The appropriate hardware SPI module must be initialized before using any of the SPI Ethernet library routines.  

  Refer to SPI Library. 

- For MCUs with multiple SPI modules it is possible to initialize them and then switch by using the 

SPI_Set_ 

 Active() 

routine. 

Library Dependency Tree