Altera Low Latency Ethernet 10G MAC Manuel d'utilisateur Page 65
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Noté. / 5. Basé sur avis des utilisateurs
RX Configuration and Status Registers
Table 4-9: RX Configuration and Status Registers
Word
Offset
Register Name Description Access HW Reset
Value
0x00A0 rx_transfer_control
• Bit 0—RX path enable.
0: Enables the RX path.
1: Disables the RX path. The MAC IP
core drops all incoming frames.
• Bits 31:1—reserved.
A change of value in this register takes
effect at a packet boundary. Any transfer in
progress is not affected.
RW 0x0
0x00A2 rx_transfer_status
The MAC sets the following bits to indicate
the status of the RX datapath.
• Bits 7:0—reserved.
• Bit 8: RX datapath status.
0: The RX datapath is idle.
1: An RX data transfer is in progress.
• Bits 11:9—reserved.
• Bit 12: RX datapath reset status.
0: The RX datapath is not in reset.
1: The RX datapath is in reset.
RO
0x0
0x00A4 rx_padcrc_control
• Bits [1:0]—Padding and CRC removal
on receive.
00: Retains the padding bytes and CRC
field, and forwards them to the client.
01: Retains only the padding bytes. The
MAC IP core removes the CRC field
before it forwards the RX frame to the
client.
11: Removes the padding bytes and CRC
field before the RX frame is forwarded to
the client.
10: Reserved.
• Bits 31:2—reserved.
Configure this register before you enable
the MAC IP core for operations.
RW
0x1
UG-01144
2014.12.15
RX Configuration and Status Registers
4-13
Configuration Registers for LL Ethernet 10G MAC
Altera Corporation
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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