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a. Double-click in the Assignment Name column and scroll to the bottom of the available
assignments.
b. Select VCCA_GXB Voltage.
c. In the Value column, select 3_0V from the list.
The Quartus II software adds these instance assignments commands to the .qsf file for your project.
You can also enter these commands at the Quartus II Tcl Console. For example, the following command
sets the XCVR_VCCR_VCCT_VOLTAGE to 1.0 V for the pin specified:
set_instance_assignment -name XCVR_VCCR_VCCT_VOLTAGE 1_0V to “pin”
Related Information
• Stratix V Device Datasheet
• Stratix E, GS, and GX Device Family Pin Connection Guidelines
Recommended Reset Sequence to Avoid Link Training Issues
Successful link training can only occur after the FPGA is configured and the Transceiver Reconfiguration
Controller IP Core has dynamically reconfigured SERDES analog settings to optimize signal quality. For
designs using CvP, link training occurs after configuration of the I/O ring and Hard IP for PCI Express IP
Core. Refer to Reset Sequence for Hard IP for PCI Express IP Core and Application Layer for a description
of the key signals that control reset, control dynamic reconfiguration, and link training. Altera
recommends separate control of reset signals for the Endpoint and Root Port. Successful reset sequence
includes the following steps:
1. Wait until the FPGA is configured as indicated by the assertion of CONFIG_DONE from the FPGA block
controller.
2. Deassert the mgmt_rst_reset input to the Transceiver Reconfiguration Controller IP Core.
3. Wait for tx_cal_busy and rx_cal_busy SERDES outputs to be deasserted.
4. Wait 1 ms after the assertion of CONFIG_DONE, then deassert the Endpoint reset.
5. Wait approximately 100 ms, then deassert the Root Port reset.
6. Deassert the reset output to the Application Layer.
Figure 10-1: Recommended Reset Sequence
CONF_DONE
Endpoint Reset
Root Port Reset
1 ms
100 ms
10-2
Recommended Reset Sequence to Avoid Link Training Issues
UG-01097_sriov
2014.12.15
Altera Corporation
Design Implementation
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- User Guide 1
- Datasheet 2
- Features 3
- Interface 4
- Release Information 7
- Device Family Support 7
- Example Designs 8
- Debug Features 8
- IP Core Verification 9
- Recommended Speed Grades 10
- Related Information 11
- Subscribe 12
- Qsys Subsystem Description 13
- Parameter Value 15
- Directory Description 16
- Parameter Settings 21
- Parameter Value Description 22
- SR-IOV System Settings 24
- Interrupt Capabilities 27
- Device Capabilities 29
- Error Reporting 30
- Link Capabilities 31
- Slot Capabilities 32
- Power Management 33
- PHY Characteristics 34
- Simulation Options 35
- Avalon-ST TX Interface 37
- Signal Direction Description 38
- Avalon‑ST RX Interface 40
- BAR Hit Signals 43
- Completion Side Band Signals 45
- Signal Directi 46
- Description 46
- Clock Signals 48
- Interrupt Interface 49
- Implementing MSI-X Interrupts 55
- LMI Signals 57
- Serial Data Signals 65
- Test Signals 70
- PIPE Interface Signals 71
- Byte Address 77
- MSI Registers 80
- MSI-X Capability Structure 82
- VF Device ID Register 96
- Page Size Registers 96
- Lane Error Status Register 98
- Bits Register Description 99
- Default Value 99
- Altera Corporation 100
- Registers 100
- Send Feedback 100
- Virtual Function Registers 102
- Name Description 103
- Reset and Clocks 107
- Hard IP for PCI Express 108
- Example Design 108
- UG-01097_sriov 109
- 2014.12.15 109
- Function Level Reset (FLR) 111
- Clock Domains 111
- Clock Summary 114
- Interrupts 115
- Error Handling 118
- Physical Layer Errors 119
- Data Link Layer Errors 119
- Transaction Layer Errors 120
- Error Type Description 121
- Status Bit Conditions 123
- IP Core Architecture 125
- Top-Level Interfaces 126
- Clocks and Reset 126
- Transceiver Reconfiguration 126
- Data Link Layer 127
- Physical Layer 129
- TX Packets 130
- Design Implementation 136
- CONF_DONE 137
- Endpoint Reset 137
- Root Port Reset 137
- SDC Timing Constraints 138
- Debugging 143
- Setting Up Simulation 146
- Use Third-Party PCIe Analyzer 148
- BIOS Enumeration Issues 148
- Address[31:2] 149
- Figure A-6: I/O Read Request 151
- Additional Information 155
- Typographic Conventions 156
- Visual Cue Meaning 157
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