Datasheet

High Performance Single-Chip 10/100 Non-PCI Ethernet Controller
Datasheet
Revision 1.5 (07-11-08) 50 SMSC LAN9118
DATASHEET
Figure 3.14 TX Example 1
TX Command 'A'
031
TX Command 'B'
Pad DWORD 1
7-Byte Data Start Offset
10-Byte
End Padding
79-Byte Payload
Buffer End Alignment = 1
Data Start Offset = 7
First Segment = 1
Last Segment = 0
Buffer Size = 79
Packet Length = 111
TX Command 'A'
031
TX Command 'B'
10-Byte
End Offset Padding
15-Byte Payload
Buffer End Alignment = 1
Data Start Offset = 0
First Segment = 0
Last Segment = 0
Buffer Size = 15
Packet Length = 111
TX Command 'A'
031
TX Command 'B'
Buffer End Alignment = 1
Data Start Offset = 10
First Segment = 0
Last Segment = 1
Buffer Size = 17
Packet Length = 111
10-Byte
Data Start Offse t
TX Command 'A'
TX Command 'B'
TX Command 'A'
TX Command 'B'
TX Command 'A'
TX Command 'B'
NOTE: Extra bytes
betw een buffers are
not transmitted
Data Written to the
Ethernet Controller
Data Passed to the
TX Data FIFO
5-Byte End Padding
17-Byte Payload Data
TX Command 'A'
TX Command 'B'
TX Command 'A'
TX Command 'A'
1B
79-Byte Payload
15-Byte Payload
17-Byte Payload