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52 Altera Corporation
SerialLite II Protocol Reference Manual
Data Link Layer Description
Figure 2–31. Illegal Multi-Lane Alignment
Transfer Size
The concept of sending data in bursts is used to support high data rates
with a minimal amount of resources. A parameter called transfer size
defines the granularity of the data burst. Data transfers are required to be
sent contiguously until the end-of-packet or a multiple of the transfer
size. Shorter packets are padded with idle characters until a multiple of
the transfer size is reached. Control sequences, such as the clock
compensation sequence and link management packets, should not
interrupt the data transfer until the next multiple of the transfer size. Any
number of control characters can be sent between data transfers.
Time
SLP LD0
LD1 LD2
Illegal: CRC must follow end-of-
packet.
IDL IDLIDL IDL
Illegal: Link Mgmt packet
cannot occupy same column
as Dat a packet
D8
IDL
D12
D0
D4
D9
IDL
D13
D1
D5
D10
SDP1
D14
D2
D6
D11
00
D15
D3
D7
D8
D12
D0
D4
D9
D13
D1
D5
D10
D2
D6
D11
D3
D7
SUP1 01 CDP1 00
D16
IDL
00
CDP1 01
D16 IDL
EGP1
Lane
#0
Lane
#1
Lane
#2
Lane
#3
CRC1
CRC2
PD0
PD4
EGP1
PD1
PD5
00
PD2
PD6
IDL
PD3
PD7
IDL
CRC1 CRC2
CRC3 CRC4
SPP1 00IDLIDL
CRC1 CRC2
Illegal: End-of-packet must be
aligned on Lane 0
Illegal: Break data packet is
missing CRC bytes.
IDL IDL
D17 D18 D19
D20
PD0
PD4
EGP1
PD1
PD5
10
PD2
PD6
IDL
PD3
PD7
IDL
CRC1 CRC2 CRC3 CRC4
SPP1 10EGP1 01
IDL
D0
IDL
D1SDP1
D2
00
D3
EGP1 00
CRC1 CRC2 IDL IDL
IDL IDL
IDL IDL
IDL IDL
SLP LD0 LD1 LD2
Illegal: Start-of-packet must be
aligned to Lane 2
SLP LD0 LD1 LD2
D14 D15
D21
IDL
Illegal: Idles within a packet
must occupy an entire column
or pad end-of-packet
SUP1 00
SDP1 01
CRC1 CRC2
IDL IDL
- 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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