Altera Low Latency Ethernet 10G MAC Manuel d'utilisateur Page 52
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Figure 3-25: PTP Packet over UDP/IPv6
Version | Traffic Class | Flow Label
Payload Length
4 Octet
2 Octets
Source IP Address16 Octets
Destination IP Address16 Octets
Source Port2 Octets
Destination Port = 319 / 3202 Octets
Hop Limit
Next Header = 0x111 Octet
1 Octet
Length/Type = 0x86DD
Source Address
Destination Address
2 Octets
6 Octets
6 Octets
Checksum
Length
2 Octets
2 Octets
flagField
correctionField
transportSpecific | messageType
reserved | versionPTP
reserved
1 Octet
1 Octet
1 Octet
2 Octets
8 Octets
reserved4 Octets
SourcePortIdentify10 Octets
sequenceId2 Octets
controlField1 Octet
logMessageInterval1 Octet
TimeStamp
Payload
10 Octets
0..1500/9600 Octets
extended bytes2 Octets
CRC
Note:
(1) For packets with VLAN or Stacked VLAN tag, add 4 or 8 octets offsets before the length/type field.
4 Octets
domainNumber
messageLength2 Octets
1 Octet
MAC Header
UDP Header
IP Header
PTP Header
(1)
3-30
PTP Packet over UDP/IPv6
UG-01144
2014.12.15
Altera Corporation
Functional Description of LL Ethernet 10G MAC
Send Feedback
- Low Latency Ethernet 10G MAC 1
- Contents 2
- About LL Ethernet 10G MAC 5
- Features 6
- Release Information 7
- Resource Utilization 8
- TX and RX Latency 9
- Related Information 10
- Parameter Settings 13
- Parameter Value Description 13
- Generated Files 15
- Extension Description 15
- Quartus II 17
- Design Flow 17
- Gate-Level Simulation 17
- RTL Simulation 17
- Altera Corporation 19
- Send Feedback 19
- Design Considerations 20
- Pseudo-Static CSR Fields 21
- Clock Crosser 21
- Dual Clock FIFO 22
- Subscribe 23
- Interfaces 24
- Interfaces Description 24
- Figure 3-2: Interface Signals 25
- Padding Bytes Insertion 26
- Address Insertion 26
- CRC-32 Insertion 27
- XGMII Encapsulation 28
- XGMII Transmission 29
- Unidirectional Feature 30
- TX Timing Diagrams 31
- RX Datapath 35
- Address Checking 36
- Frame Type Checking 36
- Length Checking 36
- Frame Length 37
- Payload Length 37
- Overflow Handling 38
- RX Timing Diagrams 38
- IEEE 802.3 Flow Control 39
- Pause Frame Reception 40
- Pause Frame Transmission 40
- Priority-Based Flow Control 41
- PFC Frame Reception 42
- PFC Frame Transmission 42
- Reset Requirements 42
- No Stage Steps 43
- Operating Mode PHY 44
- IEEE 1588v2 47
- Transmit Datapath 48
- Receive Datapath 49
- Frame Format 49
- PTP Packet over UDP/IPv4 50
- PTP Packet over UDP/IPv6 51
- 4 Octets 52
- Register Map 53
- Word Offset Purpose Variation 53
- (10-Gbps Ethernet MAC) 54
- (LL Ethernet 10G MAC) 54
- Register Access 56
- Access Definition 57
- Flow Control Registers 62
- Delay Device PMA Mode 76
- Latency MAC Configurations 76
- ECC Registers 76
- Statistics Registers 77
- Clock and Reset Signals 83
- Signal Operating 83
- Direction Width Description 83
- Unidirectional Signals 86
- Avalon-MM Programming Signals 86
- Avalon-ST Data Interfaces 87
- Avalon-ST Status Interface 90
- PHY-side Interfaces 94
- XGMII RX Signals 97
- GMII TX Signals 98
- GMII RX Signals 99
- MII TX Signals 99
- MII RX Signals 99
- 1588v2 Interfaces 100
- UG-01144 101
- 2014.12.15 101
- Additional Information 107
- Date Version Changes 108
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