Altera POS-PHY Level 4 IP Core Manual do Utilizador Página 107
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December 2014 Altera Corporation POS-PHY Level 4 IP Core User Guide
A. Start-Up Sequence
This appendix applies to any SPI-4.2 transmitter and receiver pair, where at least one
is an Altera
®
POS-PHY Level 4 IP core.
The startup sequence combines clock stabilization, reset, and configuration with the
training and framing aspects of the SPI-4.2 protocol as shown in Figure A–1 on
page A–1. Details of each event as they happen in the POS-PHY Level 4 IP core are
listed in Table A–1, but similar events should happen in other SPI-4.2
implementations.
Figure A–1. Start-Up Sequence Flowchart
TX system clocks
stabilize
(2a)
TX PL4 clocks
stabilize
(2b)
RX system clocks
stabilize
(2a)
Release TX core reset
and
disable status FSM
(3)
TX sends training
(3)
RX PL4 clocks
stabilize
(2b)
RX DPA
stabilized and trained
(5a)
Release RX core reset
and
disable status FSM
(3)
Configure TX function
and
enable status FSM
(4)
Configure RX function
and
enable status FSM
(4)
RX ready
Sends status frames
(6)
TX frames on status
TX ready
(6)
Power up
Assert all resets
RX sends 'b11 status
(1)
- 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- Upgrading Outdated IP Cores 13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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