Xilinx LOGICORE UG144 Uživatelský manuál stáhnout pdf (Strana 126)

126 www.xilinx.com 1-Gigabit Ethernet MAC v8.5 User Guide

UG144 April 24, 2009

Chapter 12: Implementing Your Design

-- DISCONTINUED PRODUCT --

Using the Model

For information about setting up your simulator to use the pre-implemented model, see

the Xilinx Synthesis and Verification Design Guide included in your Xilinx software

installation.

Other Implementation Information

For more information about using the Xilinx implementation tool flow, including

command line switches and options, see the Xilinx ISE® software manuals.

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LogiCORE™ IP 1
1-Gigabit Ethernet 1
MAC v8.5 1
Revision History 3
Table of Contents 5
Appendix D: Core Latency 8
Schedule of Figures 9
UG144 April 24, 2009 10
Schedule of Tables 13
About This Guide 15
Conventions 16
Online Document 17
List of Acronyms 17
Introduction 19
Specifications 20
Technical Support 20
Feedback 20
Core Architecture 21
Core Components 22
Core Interfaces 23
Client Side Interface 26
Receiver Interface 27
Flow Control Interface 27
Physical Side Interface 29
MDIO Interface 30
Generating the Core 31
Component Name 32
Management Interface 32
Address Filter 32
Physical Interface 32
Output Generation 33
Designing with the Core 35
Know the Degree of Difficulty 37
Keep it Registered 38
Use Supported Design Flows 38
Chapter 5 39
Frame Reception with Errors 41
Client-Supplied FCS Passing 42
VLAN Tagged Frames 42
Disabled 43
Receiver Statistics Vector 44
Transmitting Outbound Frames 47
Client Underrun 48
Inter-Frame Gap Adjustment 49
Transmitter Statistics Vector 50
Using Flow Control 53
Flow Control Basics 54
Pause Control Frames 55
Core-initiated Pause Request 56
Pause Frame Reception Enabled 57
Operation 59
Chapter 6: Using Flow Control 60
Chapter 7 61
GMII Receiver Logic 63
DCM Reset circuitry 64
IOB LOGIC 66
Virtex-4 Devices 67
RGMII Receiver Logic 70
Implementing External RGMII 71
Using the MDIO interface 76
Configuration and Status 77
Configuration Registers 78
Receiver Configuration 79
Transmitter Configuration 80
Flow Control Configuration 81
MDIO Configuration 82
Address Filter Configuration 82
Accessing the Address Table 85
LOCATION 86
31 : 0 47 : 32 86
IDLE IDLE32 bits 87
STA drives MDIO 87
Constraining the Core 93
MDIO Logic 94
Flow Control 95
Configuration 95
"reset_dist_grp"; 96
GMII Input Setup/Hold Timing 97
Non-Virtex-5 devices 99
RGMII IOB Constraints 101
RGMII Input Setup/Hold Timing 102
Virtex-5 Devices 103
RGMII DDR Constraints 104
Non-Virtex-5 Devices 105
-- DISCONTINUED PRODUCT 108
Clocking and Resetting 109
Multiple Cores 110
With RGMII 111
Reset Conditions 112
Interfacing to Other Cores 113
Tra ns ce i ve r 115
Virtex-5 LXT and SXT Devices 117
Virtex-5 FXT Devices 118
Ethernet Statistics Core 119
Implementing Your Design 123
Implementation 124
Static Timing Analysis 125
Generating a Bitstream 125
Generating a Simulation Model 125
Using the Model 126
Using the Client-Side FIFO 127
Interfaces 128
Receive FIFO 129
Data Flow 130
Functional Operation 131
Expanding Maximum Frame Size 132
Interoperability 133
Appendix C 135
Core Latency 137
Appendix D: Core Latency 138

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