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ENC424J600 Datasheet(PDF) 91 Page - Microchip Technology |
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ENC424J600 Datasheet(HTML) 91 Page - Microchip Technology |
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91 / 168 page  2010 Microchip Technology Inc. DS39935C-page 89 ENC424J600/624J600 TABLE 9-1: RECEIVE STATUS VECTOR Byte Bit(s) Field Description 5 47:40 Zeros 00h 439 Zero ‘0’ 38 Reserved 37 Reserved 36 Unicast Filter Match Current frame met criteria for the Unicast Receive filter. 35 Pattern Match Filter Match Current frame met criteria for the Pattern Match Receive filter as configured when the packet was received. 34 Magic Packet™ Filter Match Current frame met criteria for the Magic Packet Receive filter as configured when the packet was received. 33 Hash Filter Match Current frame met criteria for the Hash Receive filter as configured when the packet was received. 32 Not-Me Filter Match Current frame met criteria for the Not-Me Receive filter. 3 31 Runt Filter Match Current frame met criteria for the Runt Packet Receive filter. 30 Receive VLAN Type Detected Current frame was recognized as a VLAN tagged frame. 29 Receive Unknown Opcode Current frame was recognized as a control frame but it contained an unknown opcode. 28 Receive Pause Control Frame Current frame was recognized as a control frame containing a valid pause frame opcode and a valid destination address. 27 Receive Control Frame Current frame was recognized as a control frame for having a valid type/length designating it as a control frame. 26 Dribble Nibble Indicates that after the end of this packet, an additional 1 to 7 bits were received. The extra bits were thrown away. 25 Receive Broadcast Packet Current frame has a valid Broadcast address. 24 Receive Multicast Packet Current frame has a valid Multicast address. 2 23 Received Ok Received packet had a valid CRC and no symbol errors. 22 Length Out of Range Frame type/length field was larger than 1500 bytes (type field). 21 Length Check Error Frame length field value in the packet does not match the actual data byte length and specifies a valid length. 20 CRC Error Frame CRC field value does not match the CRC calculated by the MAC. 19 Reserved 18 Carrier Event Previously Seen A carrier event was detected at some time since the last receive. The carrier event is not associated with this packet. A carrier event is activity on the receive channel that does not result in a packet receive attempt being made. 17 Reserved 16 Packet Previously Ignored A frame larger than 50,000 bit times occurred or a packet has been dropped since the last receive. 1 15:0 Received Byte Count Length of the received frame in bytes. This includes the destination address, source address, type/length, data, padding and CRC fields. This field is stored in little-endian format. 0 |
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