Altera POS-PHY Level 4 IP Core Manuel d'utilisateur télécharger pdf (Page 83)

Chapter 5: Functional Description—Transmitter 5–13

Error Flagging and Handling

December 2014 Altera Corporation POS-PHY Level 4 IP Core User Guide

The

stat_ts_sync

signal is deasserted when a programmed

bad_level

number of

calendar sequences with frame errors or DIP-2 errors is received without a good

frame. When the

stat_ts_sync

signal is deasserted, the transmitter stops transmitting

data on the nearest burst unit size boundary or at the next EOP, and starts sending the

training patterns continuously (refer to Figure 5–6).

Figure 5–6. Status Sync State Machine

1 2 ... 78 79 80 81 82 83 84 85 86 87 88 ... 141 142

User Guide 1
POS-PHY Level 4 IP Core 1
1. About This IP Core 3
General Description 5
Interfaces & Protocols 6
IP Core Verification 7
OpenCore Plus IP Evaluation 9
2. Getting Started 11
Using the Parameter Editor 12
Upgrading Outdated IP Cores 13
Specify Parameters 15
Simulate the Design 17
3. Parameter Settings 21
LVDS Data Rate 22
PLL Input Frequency 23
Data Path Width 23
Buffer Mode 23
Basic Parameters 24
Atlantic FIFO Buffer Clock 25
Atlantic Interface Width 25
Optional Features 26
Transmitter Options 27
Receiver Options 28
Starving Starving Starving 29
Starving Hungry Hungry 29
Starving Satisfied Satisfied 29
FIFO RAM Blocks 30
Note to Table 3–5: 31
Protocol Parameters 32
Features 39
Block Description 39
ALTLVDS_RX IP Core 41
Data Processor (rx_data_proc) 42
Atlantic Buffers 43
Individual Buffers 44
Status Processor 45
Notes to Figure 4–3: 46
Note to Table 4–1: 47
Notes to Figure 4–4: 48
Requirements for rxsys_clk 49
Reset Structure 50
Error Flagging and Handling 50
SPI-4.2 Protocol Errors 51
Notes to Table 4–3: 53
DIP-4 Marking 54
Notes to Figure 4–8: 56
Missing SOP 59
Missing EOP 60
Note to Table 4–7: 62
Note to Table 4–8: 63
Note to Table 4–9: 63
Latency Information 68
Data Processor (tx_data_proc) 74
Status Bypass Port 77
Clock Structure 78
Multiple Clock Domain 79
Notes to Figure 5–4: 80
Note to Table 5–5: 88
6. Testbench 99
Variation 100
Receiver 100
Receiver Testbench Examples 101
6–4 Chapter 6: Testbench 102
Chapter 6: Testbench 6–5 103
6–6 Chapter 6: Testbench 104
Chapter 6: Testbench 6–7 105
6–8 Chapter 6: Testbench 106
A. Start-Up Sequence 107
Troubleshooting 109
Issues and Tips—Miscellaneous 111
Separate PLLs 113
Shared PLL 113
"<rx_pll>" 114
Note to Table C–1: 115
D. Board Design 117
Probe Points 118
Spare Pins 119
JTAG Scan Chain 119
D–4 Appendix D: Board Design 120
Design for Testability 120
Introduction 121
Static Alignment 125
Dynamic Alignment 126
Altera Solutions 126
Dynamic Phase Alignment (DPA) 127
AC Timing Analysis 128
Budgets 129
G. Conversion from v2.2.x 131
Receiver Signals 132
Transmitter Signals 134
Additional Information 139
Note to Table: 140
Additional Information Info–3 141
Typographic Conventions 141
Info–4 Additional Information 142

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