AN983 ETC [List of Unclassifed Manufacturers], AN983 Datasheet - Page 59

• Manufacturer Part Number: AN983
• Description: PCI/miniPCI-to-Ethernet LAN Controller
• Manufacturer: ETC [List of Unclassifed Manufacturers]

8.2.2 THE POINT OF DESCRIPTOR MANAGEMENT
Rev. 1.8
OWN bit = 1, ready for network side access
OWN bit = 0, ready for host side access
Transmit Descriptor Pointers
next packet to be transmitted
own bit=2,
packet1 and packet 2 are
ready to transmit
empty descriptor
pointer
end of ring
Fig - 7 Transmit pointers for descriptor management
AN983B
Descriptor
0
1
1
1
0
0
www.admtek.com.tw
Buffer1 pointer
Buffer2 pointer
ADMtek Inc.
Length 2
Packet 1
Packet 1
Packet 2
PCI/miPCI Fast Ethernet Controller with integrated PHY
Length 1
Data Buffer
Data
Data
Length 1
Length 2
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