E-STE10/100A STMicroelectronics, E-STE10/100A Datasheet - Page 15

• Manufacturer Part Number: E-STE10/100A
• Description: Telecom ICs PCI Ethernet Contlr
• Manufacturer: STMicroelectronics

Specifications of E-STE10/100A

• Mounting Style: SMD/SMT
• Package / Case: PQFP-128
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

STE10/100A
3.2.2
Descriptor management
OWN bit = 1, ready for network side access
OWN bit = 0, ready for host side access
Transmit descriptors
Figure 7.
Ext packet to be transmitted
Ext packet to be transmitted
Own bit=1,
Own bit=1,
packet 1 and packet 2
packet 1 and packet 2
are ready to transmit
are ready to transmit
Empty descriptor pointer
Empty descriptor pointer
Transmit descriptor management
Descriptor ring
Descriptor ring
End of ring
End of ring
0
0
1
1
1
1
0
0
1
1
0
0
Buffer 1 pointer
Buffer 1 pointer
Buffer 2 pointer
Buffer 2 pointer
Packet1
Packet1
Packet1
Packet1
Packet2
Packet2
Length 2
Length 2
·
·
·
·
·
·
Length1
Length1
Functional description
Data buffer
Data buffer
Data
Data
Data
Data
PC00352
15/82