LAN9218I-MT-E2 SMSC [SMSC Corporation], LAN9218I-MT-E2 Datasheet - Page 48
LAN9218I-MT-E2
Manufacturer Part Number
LAN9218I-MT-E2
Description
High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX & Industrial Temperature Support
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.LAN9218I-MT-E2.pdf
(130 pages)
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Revision 1.5 (07-18-06)
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" illustrates the TX command structure for this example, and also shows
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
High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX & Industrial Temperature Support
Figure 3.13 TX Example 1
DATASHEET
1B
48
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
SMSC LAN9218I
Datasheet
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