Mikroelektronika MIKROE-742 데이터 시트

385

- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 6

procedure Spi_Ethernet_Disable(disFlt: byte);

Nothing. 

This is MAC module routine. This routine disables appropriate network traffic on the

ENC28J60

module by the means of it's receive filters (unicast, multicast, broadcast,

crc). Specific type of network traffic will be disabled if a corresponding bit of this rou-
tine's input parameter is set. Therefore, more than one type of network traffic can be
disabled at the same time. For this purpose, predefined library constants (see the
table below) can be ORed to form appropriate input value. 

Parameters:

- 

disFlt

: network traffic/receive filter flags. Each bit corresponds to the appropri

ate network traffic/receive filter: 

Note: Advance filtering available in the ENC28J60 module such as Pattern
Match, Magic Packet and Hash Table can not be disabled by this routine. 

Note: This routine will change receive filter configuration on-the-fly. It will not, in
any way, mess with enabling/disabling receive/transmit logic or any other part of
the 

ENC28J60

module. The ENC28J60 module should be properly cofigured by

the means of Spi_Ethernet_Init routine. 

0

0x01

MAC Broadcast traffic/receive filter flag. When
set, MAC broadcast traffic will be disabled. 

Spi_Ethernet_

BROADCAST

1

0x02

MAC Multicast traffic/receive filter flag. When
set, MAC multicast traffic will be disabled.

Spi_Ethernet_

MULTICAST

2

0x04

not used

none

3

0x08

not used

none

4

0x10

not used

none

5

0x20

CRC check flag. When set, CRC check will
be disabled and packets with invalid CRC
field will be accepted.

Spi_Ethernet_

CRC

6

0x40

not used

none

7

0x80

MAC Unicast traffic/receive filter flag. When
set, MAC unicast traffic will be disabled. 

Spi_Ethernet_

UNICAST