Technical information

iii
Document Title: AIC-6915 Ethernet LAN Controller Programmer’s
Manual
Stock Number: xxxxxx-xx Rev. x Page: Front Matter-iii
Print Spec Number: xxxxxx-xx Rev. x
Current Date: 10/10/98 ECN Date: xx/xx/xx
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Contents
1 Introduction
Features 1-2
General 1-2
Ethernet 1-2
DMA 1-2
Internal Buffer Management 1-3
32/64-bit PCI 1-3
Block Diagram 1-5
Modules 1-6
2 Receive Architecture
Features 2-1
Host Data Structures 2-2
Producer and Consumer Indices 2-2
Receive DMA Descriptor Queues 2-2
Normal Mode 2-3
Polling Mode 2-3
32-bit Addressing Mode 2-4
64-bit Addressing Mode 2-4
Completion/Status Descriptor Queue 2-4
Accepting frames 2-5
Completion Descriptor 2-5
3 Transmit Architecture
Features 3-1
Transmit Data Structure 3-4
Transmit Register Set 3-5
Transmit DMA Buffer Descriptor Queues 3-5
Type 0, 32-bit Addressing Mode (Frame Descriptor) 3-5
Type 1 (Generic), 32-bit Addressing Mode (Buffer Descriptor) 3-8
Type 2 (Generic), 64-bit Addressing Mode (Buffer Descriptor) 3-8
Type 3, 32-bit Addressing Mode (Frame Descriptor) 3-9
Type 4, 32-bit Addressing Mode (Frame Descriptor) 3-9
Transmit Completion Queue Entry 3-10