LAN89218AQ Standard Microsystems (SMSC), LAN89218AQ Datasheet - Page 62
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LAN89218AQ
Manufacturer Part Number
LAN89218AQ
Description
Manufacturer
Standard Microsystems (SMSC)
Datasheet
1.LAN89218AQ.pdf
(155 pages)
Specifications of LAN89218AQ
Lead Free Status / RoHS Status
Compliant
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Revision 1.3 (02-23-10)
Figure 3.22, "TX Example 1"
how data is passed to the TX data FIFO.
TX Com m and 'A'
Buffer End Alignment = 1
Data Start Offset = 7
First Segment = 1
Last Segment = 0
Buffer Size = 79
TX Com m and 'B'
Packet Length = 111
TX Com m and 'A'
Buffer End Alignment = 1
Data Start Offset = 0
First Segment = 0
Last Segment = 0
Buffer Size = 15
TX Com m and 'B'
Packet Length = 111
TX Com m and 'A'
Buffer End Alignment = 1
Data Start Offset = 10
First Segment = 0
Last Segment = 1
Buffer Size = 17
TX Com m and 'B'
Packet Length = 111
31
31
31
Ethernet Controller
Data Written to the
7-Byte Data Start Offset
17-Byte Payload Data
5-Byte End Padding
End Offset Padding
Data Start Offset
TX Command 'A'
TX Command 'B'
TX Command 'A'
TX Command 'B'
TX Command 'A'
TX Command 'B'
79-Byte Payload
15-Byte Payload
Pad DWORD 1
High Performance Single-Chip 10/100 Ethernet Controller for Automotive Applications
End Padding
10-Byte
10-Byte
10-Byte
illustrates the TX command structure for this example, and also shows
Figure 3.22 TX Example 1
DATASHEET
1B
62
0
0
0
Data Passed to the
TX Data FIFO
TX Command 'A'
TX Command 'B'
TX Command 'A'
TX Command 'A'
79-Byte Payload
15-Byte Payload
17-Byte Payload
NOTE: Extra bytes
betw een buffers are
not transmitted
SMSC LAN89218
Datasheet
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