LAN9218I_07 SMSC [SMSC Corporation], LAN9218I_07 Datasheet - Page 49
LAN9218I_07
Manufacturer Part Number
LAN9218I_07
Description
High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX and Industrial Temperature Support
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.LAN9218I_07.pdf
(133 pages)
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High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX and Industrial Temperature Support
Datasheet
SMSC
LAN9218i
TX Com m and 'A'
Buff er End Alignment = 1
Data Start Of fset = 7
First Segment = 1
Last Segment = 0
Buff er Size = 79
TX Com m and 'B'
Packet Length = 111
TX Com m and 'A'
Buff er End Alignment = 1
Data Start Of fset = 0
First Segment = 0
Last Segment = 0
Buff er Size = 15
TX Com m and 'B'
Packet Length = 111
TX Com m and 'A'
Buff er End Alignment = 1
Data Start Of fset = 10
First Segment = 0
Last Segment = 1
Buff er Size = 17
TX Com m and 'B'
Packet Length = 111
Figure 3.13, "TX Example 1"
how data is passed to the TX data FIFO.
31
31
31
Ethernet Controller
Data W ritten 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 DW ORD 1
End Padding
10-Byte
10-Byte
10-Byte
illustrates the TX command structure for this example, and also shows
Figure 3.13 TX Example 1
DATASHEET
1B
49
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 buff ers are
not transmitted
Revision 1.8 (06-06-07)
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