Figure 3.15 ring and chain descriptor structures, Datasheet – SMSC LAN9420 User Manual

Page 40

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Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface

Datasheet

Revision 1.22 (09-25-08)

40

SMSC LAN9420/LAN9420i

DATASHEET

Figure 3.15 Ring and Chain Descriptor Structures

DESCRIPTOR 0

BUFFER 1

BUFFER 2

DESCRIPTOR 1

BUFFER 1

BUFFER 2

DESCRIPTOR n

BUFFER 1

BUFFER 2

Ring Structure:

DESCRIPTOR 0

BUFFER 1

DESCRIPTOR 1

BUFFER 1

NEXT DESCRIPTOR

Chain Structure:

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