Technical information

3-4
AIC-6915 Ethernet LAN Controller Programmer’s Manual
Transmit Data Structure
Figure 3-1 illustrates the Transmit Data Structure
Pkt 2 Buf3
CI
PI
Buffer Descriptors
for Hi-Priority
Buffer Descriptors
for Lo-Priority
Packet Data Buffers
Completion Queue
Status CI
Host Memory
the
AIC-6915
High-Priority
CI
PI
Low-Priority
CI
PI
Completion Queue
Pkt 2 Buf2
Pkt 2 Buf1
Skip Field
Frame Header
Pkt 1 Buf3
Pkt 1 Buf2
Pkt 1 Buf1
Skip Field
Frame Header
Pkt 3 Buf3
Pkt 3 Buf2
Pkt 3 Buf1
Skip Field
Frame Header
Figure 3-1. Transmit Host Communication Data Structure
Queue Pointers
Queue Pointers
Pointers