Altera Low Latency 40-Gbps Ethernet MAC and PHY MegaCore Bedienungsanleitung Seite 49
- Seite / 196
- Inhaltsverzeichnis
- LESEZEICHEN
Bewertet. / 5. Basierend auf Kundenbewertungen
Figure 3-2: Typical Client Frame at the Transmit Interface
Illustrates the changes that the TX MAC makes to the client frame. This figure uses the following
notational conventions:
• <p> = payload size, which is arbitrarily large.
• <s> = padding bytes = 0–46 bytes.
• <l> = number of IPG bytes
MAC Frame
Added by MAC for TX packets
Destination
Addr[47:0]
SFD[7:0]
Preamble
[47:0]
CRC32
[31:0]
IPG
[<I-1>:0]
PAD [<s>]
Source
Addr[47:0]
Type/
Length[15:0]
Payload
[<p-1>:0]
Start EFD[7:0]
Added by MAC for TX packetsPayload Data from Client
The following sections describe the functions that the TX module performs:
Preamble, Start, and SFD Insertion on page 3-4
Address Insertion on page 3-4
Length/Type Field Processing on page 3-4
Frame Padding on page 3-5
Frame Check Sequence (CRC-32) Insertion on page 3-5
Inter-Packet Gap Generation and Insertion on page 3-5
Error Insertion Test and Debug Feature on page 3-5
Preamble, Start, and SFD Insertion
In the TX datapath the MAC appends an eight-byte preamble that begins with a Start byte (0xFB) to the
client frame. If you turn on Enable link fault generation, this MAC module also incorporates the
functions of the reconciliation sublayer.
The source of the preamble depends on whether you turn on the preamble pass-through feature by
turning on Enable preamble passthrough in the Low Latency 40-100GbE parameter editor.
If the preamble pass-through feature is turned on, the client provides the eight-byte preamble (including
Start byte) on the data bus. The client is responsible for providing the correct Start byte.
Address Insertion
The client provides the destination MAC address and the source address of the local MAC.
Length/Type Field Processing
This two-byte header represents either the length of the payload or the type of MAC frame. When the
value of this field is equal to or greater than 1536 (0x600) it indicates a type field. Otherwise, this field
3-4
Preamble, Start, and SFD Insertion
UG-01172
2015.05.04
Altera Corporation
Functional Description
Send Feedback
- 101 Innovation Drive 1
- San Jose, CA 95134 1
- Contents 2
- Features 6
- Device Family Support 8
- IP Core Verification 9
- Simulation Environment 10
- Compilation Checking 10
- Hardware Testing 10
- Variation 11
- A B C D E F 11
- Parameter 11
- Release Information 14
- Getting Started 15
- OpenCore Plus IP Evaluation 17
- IP Core Parameters 19
- Parameter Type Range Default 23
- Parameter Description 23
- File Name Description 29
- Pin Assignments 32
- External TX MAC PLL 35
- File Names Description 38
- Initializing the IP Core 45
- Functional Description 46
- High Level System Overview 47
- Address Insertion 49
- Length/Type Field Processing 49
- Frame Padding 50
- Client Interface 51
- Data Bus Width (Bits) 51
- Three unusable words 57
- Order of Transmission 59
- RX CRC Forwarding 63
- Inter-Packet Gap 63
- Pause Ignore 63
- Control Frame Identification 64
- Name Direction Description 65
- Low Latency 100GbE CAUI–4 PHY 72
- External Transceiver PLL 72
- Pause Control Frame Filtering 76
- Statistics Counters Interface 79
- Name Signal 80
- Direction 80
- Description 80
- OctetOK Count Interface 82
- Transparent Clock Mode 85
- PTP Receive Functionality 87
- PTP Transmit Functionality 88
- 1588 PTP Interface Signals 90
- PTP Timestamp Formats 92
- PHY Status Interface 93
- Control and Status Interface 94
- Signal Name Description 97
- UG-01172 100
- 2015.05.04 100
- Related Information 108
- Software Interface: Registers 109
- PHY Registers 112
- LL 40GBASE-KR4 Registers 116
- Pause Registers 130
- TX Statistics Registers 137
- RX Statistics Registers 143
- 1588 PTP Registers 148
- Ethernet Glossary 150
- Term Definition 151
- Altera Corporation 153
- Send Feedback 153
- Arria 10 10GBASE-KR Registers 160
- 0x4D6 to 181
- MAC+PHY KR solution 181
- Subscribe 182
- Additional Information 187
- Date Compatible ACDS 188
- How to Contact Altera 194
- Typographic Conventions 195
- Visual Cue Meaning 196
Verwandte Produkte und Handbücher für Messgeräte Altera Low Latency 40-Gbps Ethernet MAC and PHY MegaCore
Messgeräte Altera JNEye Bedienungsanleitung
(194 Seiten)
(194 Seiten)
Messgeräte Altera Mentor Verification IP Altera Edition AMBA AXI4-Li Bedienungsanleitung
(413 Seiten)
(413 Seiten)
Messgeräte Altera Mentor Verification IP Altera Edition AMBA AXI4-St Bedienungsanleitung
(231 Seiten)
(231 Seiten)
Messgeräte Altera Nios II Bedienungsanleitung
(22 Seiten)
(22 Seiten)
Messgeräte Altera Nios II Bedienungsanleitung
(22 Seiten)
(22 Seiten)
Messgeräte Altera Mentor Verification IP Altera Edition AMBA AXI3/4T Bedienungsanleitung
(783 Seiten)
(783 Seiten)
Messgeräte Altera PCI Development Kit, Cyclone II Edition Getting St Bedienungsanleitung
(40 Seiten)
(40 Seiten)
Messgeräte Altera PCI Express Development Kit, Stratix II GX Edition Bedienungsanleitung
(36 Seiten)
(36 Seiten)
Messgeräte Altera PCI Compiler Bedienungsanleitung
(360 Seiten)
(360 Seiten)
© 2020, manymanuals.de. Alle Rechte vorbehalten. | 0.023 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Kommentare zu diesen Handbüchern