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12 transmit flow, 12 transmit flow -34, Figure 9-16. transmit flow diagram -34 – Cirrus Logic EP93xx User Manual

Page 336

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9-34

DS785UM1

Copyright 2007 Cirrus Logic

1/10/100 Mbps Ethernet LAN Controller
EP93xx User’s Guide

9

9

9

9.2.3.12 Transmit Flow

Figure 9-16. Transmit Flow Diagram

Device Driver

Protocol Stack
XMIT Call

1

TX_Complete

Tx Descriptor

Queue

2

Transmit Frame

Data

Tx Status
Queue

PCI Bus

Transmit

Descriptor

Registers

TxDEQ

Transmit

Descriptor
Processor

MAC

Engine

LAN

Medium

3

4

5

6

7

8

9

11

10

M

e

m

o

ry

CS 8950

AHB

System
Memory