Altera SerialLite II Protocol Manuel d'utilisateur Page 39
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Altera Corporation 39
SerialLite II Protocol Reference Manual
SerialLite II Specification
Figure 2–18. Link Management Packet Encapsulation
Link Management Packet Size
The link management packet has a fixed length of four bytes: a single byte
identifier followed by three bytes of payload.
Link Management Packet Payload Format
Table 2–18 shows the link management packet payload format using the
following parameters:
■ FC_TIME = Flow control time
■ ACK = Acknowledgement
■ NACK = Negative acknowledgement
■ SID = Segment identification
■ BIP-8 = 8 bits of bit interleaved parity
■ CLASS = Packet type class
Link Management Packet Type (LMP[23:20])
SerialLite II currently has the following management packets defined:
■ Flow Control Packets (Link Packet Type = 0x1); see detailed
description in “Flow Control (Optional)” on page 2–61.
■ Retry-on-Error Control Packets (Link Packet Type = 0x2); see
detailed description in “Retry-on-Error (Optional)” on page 2–64.
Link Management Packet Parameter (LMP[19:8])
This field contains parameters specific to the type of link management
packet. See “Flow Control (Optional)” on page 2–61 and “Retry-on-Error
(Optional)” on page 2–64 for details.
SLP Link Management Packet Payload
Table 2–18. Link Management Packet Format
Bits
[23:20] [19:16] [15:12] [11:8] [7:4] [3:0]
Type Parameter Description Protection
Flow control packet 0x1 CLASS FC_TIME BIP-8
Retry-on-error control packet 0x2 CLASS 0x0 SID BIP-8
- SerialLite II Protocol 1
- Reference Manual 1
- MNL-SLITE2-1.0 2
- Table of Contents 3
- About This Manual 5
- Glossary 6
- Altera Corporation vii 7
- SerialLite II 9
- Specification 9
- Architectural 10
- Overview 10
- Physical Layer 11
- Description 12
- Signal Definitions 13
- Interface Diagrams 13
- Electrical Specifications 14
- Driver Characteristics 15
- Receiver Characteristics 15
- Symbol Encoding 16
- Notation Convention 17
- Transmission Order 18
- Altera Corporation 19 19
- SerialLite II Specification 19
- Running Disparity Rules 20
- Valid and Invalid code-groups 20
- Control Symbols 21
- Comma /COM/ 21
- Align /ALN/ 21
- Idle /IDL/ 21
- Control Sequences 22
- Ordered Sequences 25
- 28 Altera Corporation 28
- Physical Layer Description 28
- Training Sequence 29
- 30 Altera Corporation 30
- Altera Corporation 31 31
- 32 Altera Corporation 32
- Altera Corporation 33 33
- 34
- Scrambling (Optional) 35
- Data Link Layer 36
- Altera Corporation 37 37
- Link Management Packets 38
- Type BIP-8 40
- BIP-8 Coverage 40
- Parameter 40
- User Data 41
- Interruption (or under-run) 42
- SLP Link Management 43
- SPP Prioirity Payload EGP 43
- SDP Data Payload EGP 43
- Multi-Lane Alignment 44
- Data Transmission Rules 45
- Lane Alignment Examples 45
- 46 Altera Corporation 46
- Data Link Layer Description 46
- Altera Corporation 47 47
- 48 Altera Corporation 48
- Altera Corporation 49 49
- 50 Altera Corporation 50
- Altera Corporation 51 51
- Transfer Size 52
- Altera Corporation 53 53
- 54 Altera Corporation 54
- Altera Corporation 55 55
- Channel Multiplexing 56
- Data Packets 57
- Priority Packets 57
- 58 Altera Corporation 58
- Altera Corporation 59 59
- 60 Altera Corporation 60
- Flow Control (Optional) 61
- Flow control time 62
- Altera Corporation 63 63
- Retry-on-Error (Optional) 64
- Segment Identification (SID) 65
- Segment Buffers 65
- Segment Acknowledgement Timer 66
- Altera Corporation 67 67
- Error Events & 69
- Handling 69
- Catastrophic Error Events 71
- Link Error Events 71
- Data Error Events 72
- Data Error Threshold 73
- Packets Marked Bad 74
- 8b/10b Code 75
- References 83
- -GX White 84
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