Achronix Speedster22i 10G/40G/100G Ethernet Manual de usuario Pagina 4
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4 UG029, September 6, 2013
Fabric FIFO Interface....................................................................................... 29
Overview .............................................................................................................................. 29
Transmit FIFO Interface Block Diagram ....................................................................................... 30
Receive FIFO Interface Block Diagram ........................................................................................ 31
Credit Handling .................................................................................................................... 32
Receive Direction: FIFO to Application ......................................................................................... 32
Transmit Direction: Application to FIFO ........................................................................................ 33
Data Structure ...................................................................................................................... 33
FIFO Interface Transmit Operation ...................................................................................... 37
FIFO Interface Receive Operation ....................................................................................... 39
Frame Status ....................................................................................................................... 42
FIFO Thresholds .................................................................................................................. 43
FIFO Sections Behavior (Watermarks) ......................................................................................... 43
Flow Control Interface ..................................................................................... 45
Link Pause Flow Control Frames ......................................................................................... 45
Priority Flow Control (PFC) Frames ..................................................................................... 46
Transmit Pause/PFC Operation ........................................................................................... 47
Receive Pause/PFC Operation ............................................................................................ 47
PFC Mode .................................................................................................................................... 47
Link Pause Mode ......................................................................................................................... 47
Serial Bus Interface ......................................................................................... 49
Overview .............................................................................................................................. 49
Port List ................................................................................................................................ 49
Read Operation .................................................................................................................... 49
Write Operation .................................................................................................................... 50
PMA Management Interface ............................................................................ 51
Features .................................................................................. Error! Bookmark not defined.
Power State Descriptions ..................................................................................................... 51
Power State Sequencing ..................................................................................................... 53
Auto-Negotiation ............................................................................................. 54
Overview .............................................................................................................................. 54
Usage .................................................................................................................................. 55
IEEE 1588 Timestamping ................................................................................ 58
Receive Timestamping ........................................................................................................ 58
- Speedster22i 10/40/100 1
- Gigabit Ethernet User Guide 1
- Copyright Info 2
- Table of Contents 3
- Table of Figures 7
- Overview 8
- Functional Description 10
- Interface Signal List 12
- Global Signals 13
- Receive FIFO Interface 13
- Transmit FIFO Interface 15
- PMA TX/RX Interface 16
- Signal Name 17
- Serial Bus Interface 18
- SerDes (off-chip) Interface 19
- Transmitted Frame Status 19
- Timestamp Timer 19
- MAC/PCS Status Indications 20
- Implementation with ACE 21
- Simulation 24
- .vp or .ve file extenstion 25
- .vma file extenstion 25
- Clock Distribution 26
- Reset Considerations 28
- Fabric FIFO Interface 29
- Credit Handling 32
- Data Structure 33
- Valid Bytes 34
- Byte Number 36
- Frame Status 42
- FIFO Thresholds 43
- FIFO nearly full 44
- FIFO has at least 44
- FIFO is full 44
- Flow Control Interface 45
- Transmit Pause/PFC Operation 47
- Receive Pause/PFC Operation 47
- Write Operation 50
- PMA Management Interface 51
- Power State Sequencing 53
- Auto-Negotiation 54
- Function 55
- Related 55
- Registers 55
- IEEE 1588 Timestamping 58
- Channelized MAC Registers 61
- Transmitted 64
- Bit Name 70
- 1000Base-X / SGMII PCS 71
- Global Registers 77
- Channelized PCS Registers 79
- Auto-Negotiation Registers 87
- PMA Registers 93
- 1A[7:4] 95
- 1B[3:0] 95
- 1B[6:4] 95
- 1C[7:3] 95
- +1 is 4’h9 96
- 51[3:2] 97
- 53[2:2] 97
- 53[3:3] 97
- 8[6:6] 99
- 21[5:1] 99
- 23[5:1] 99
- 25[2:0] 99
- UG029, September 6, 2013 101
- Statistics Data Registers 102
- Receive Statistics Vector 103
- Description 104
- Transmit Statistics Vector 105
- References 107
- Revision History 108
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