Altera 40-Gbps Ethernet MAC and PHY MegaCore Function Manuel d'utilisateur Page 167
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- Table des matières
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Noté. / 5. Basé sur avis des utilisateurs
Term Definition
FCS Frame Check Sequence. A CRC-32 with bit reordering and inversion.
Frame Ethernet formatted packet. A frame consists of a start delimiter byte, a 7 byte
preamble, variable length data, 4-byte FCS, and an end delimiter byte.
IPG Inter Packet Gap. Includes the end of frame delimiter and subsequent IDLE
bytes up to, but not including the next start of frame delimiter. The protocol
requires an average gap of 12 bytes.
MAC Media Access Control. Formats a user packet stream into proper Ethernet
frames for delivery to the PCS. The MAC generates the FCS and checks and
maintains the IPG.
MII Media Independent Interface. The byte-oriented protocol used by the PCS.
Sometimes distinguished with roman numerals, XGMII (10), XLGMII (40),
CGMII (100).
Octet Byte. Note that Ethernet specifications primarily use least significant bit first
ordering which is opposite from the default behavior of most contemporary
CAD tools.
PCS Physical Coding Sublayer. Presents the underlying hardware as a byte-oriented
communication channel.
XLAUI 40 gigabit attachment unit interface. (XL is the symbol in Roman Numerals for
40). This is an electrical interface that which is based on a 4-lane interface with a
bandwidth of 10 Gbps per lane.
XLGMII 40 gigabit media independent interface. (XL is the symbol in Roman Numerals
for 40). This is the byte-oriented interface protocol that connects the PCS and
MAC.
3-120
Ethernet Glossary
UG-01088
2014.12.15
Altera Corporation
Functional Description
Send Feedback
- MegaCore Function User Guide 1
- Contents 2
- PHY MegaCore Function 4
- 40- or 100-GbE MAC 5
- Device Family Support 7
- IP Core Verification 9
- Simulation Environment 10
- Hardware Testing 10
- Module ALMs Logic Registers 11
- Release Information 21
- Item Description 22
- Getting Started 23
- OpenCore Plus IP Evaluation 24
- IP Core Parameters 25
- Parameter Type Range Default 28
- Parameter Description 28
- Simulating the IP Core 32
- Pin Assignments 33
- 40-100GbE IP Core Testbenches 36
- Testbenches with Adapters 37
- File Names Description 38
- Testbenches without Adapters 40
- Initializing the IP Core 46
- High Level System Overview 49
- 40-100GbE IP Core TX Datapath 50
- Address Insertion 51
- Length/Type Field Processing 52
- Frame Padding 52
- Client Interface 53
- Data Bus Width (Bits) 53
- 40GbE IP Core 100GbE IP Core 53
- 40-100GbE IP Core RX Datapath 67
- RX CRC Forwarding 69
- Address Checking 71
- Inter‑Packet Gap 71
- Pause Ignore 71
- Name Direction Description 73
- 100GbE CAUI–4 PHY 79
- Pause Transmission Logic 82
- Statistics Counters Interface 86
- Name Signal 87
- Direction 87
- Description 87
- Control Data Description 89
- Lane to Lane Deskew Interface 90
- MII Control 91
- MII Data 91
- PCS BER Monitor 92
- Control and Status Interface 98
- Signal Name Description 100
- UG-01088 101
- 2014.12.15 101
- Related Information 102
- Send Feedback 103
- Altera Corporation 103
- Functional Description 103
- Software Interface: Registers 123
- Register Description 124
- 40-100GbE IP Core Registers 126
- Address Name Applicable 128
- Device(s) 128
- Bit Description HW Reset 128
- Bits Description HW Reset 130
- Lock Status Registers 131
- Bit Error Flag Registers 133
- PCS Hardware Error Register 134
- BER Monitor Register 134
- Test Mode Register 135
- Test Pattern Counter Register 135
- MAC and PHY Reset Registers 136
- PCS‑VLANE Registers 138
- PRBS Registers 139
- 40GBASE-KR4 Registers 139
- Pause Registers 149
- MAC Hardware Error Register 151
- CRC Configuration Register 152
- MAC Address Registers 154
- Statistics Registers 155
- PMD Registers 163
- MDIO Registers 164
- Ethernet Glossary 166
- Term Definition 167
- Subscribe 169
- Core v12.0 Release 173
- 10GBASE-KR Registers 174
- Bit R/W Name Description 175
- Additional Information 190
- Date ACDS 191
- at offset 0x127), described 193
- How to Contact Altera 198
- Typographic Conventions 198
- Visual Cue Meaning 199
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