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1. Datasheet
2. Quick Start Guide
3. Arria® 10 or Cyclone® 10 GX Parameter Settings
4. Physical Layout
5. Interfaces and Signal Descriptions
6. Registers
7. Reset and Clocks
8. Interrupts
9. Error Handling
10. PCI Express Protocol Stack
11. Transaction Layer Protocol (TLP) Details
12. Throughput Optimization
13. Design Implementation
14. Additional Features
15. Hard IP Reconfiguration
16. Testbench and Design Example
17. Debugging
A. Transaction Layer Packet (TLP) Header Formats
B. Lane Initialization and Reversal
C. Arria® 10 or Cyclone® 10 GX Avalon-ST Interface for PCIe Solutions User Guide Archive
D. Document Revision History
3.1. Parameters
3.2. Arria® 10 or Cyclone® 10 GX Avalon-ST Settings
3.3. Base Address Register (BAR) and Expansion ROM Settings
3.4. Base and Limit Registers for Root Ports
3.5. Device Identification Registers
3.6. PCI Express and PCI Capabilities Parameters
3.7. Vendor Specific Extended Capability (VSEC)
3.8. Configuration, Debug, and Extension Options
3.9. PHY Characteristics
3.10. Example Designs
5.1. Clock Signals
5.2. Reset, Status, and Link Training Signals
5.3. ECRC Forwarding
5.4. Error Signals
5.5. Interrupts for Endpoints
5.6. Interrupts for Root Ports
5.7. Completion Side Band Signals
5.8. Parity Signals
5.9. LMI Signals
5.10. Transaction Layer Configuration Space Signals
5.11. Hard IP Reconfiguration Interface
5.12. Power Management Signals
5.13. Physical Layer Interface Signals
16.4.1. ebfm_barwr Procedure
16.4.2. ebfm_barwr_imm Procedure
16.4.3. ebfm_barrd_wait Procedure
16.4.4. ebfm_barrd_nowt Procedure
16.4.5. ebfm_cfgwr_imm_wait Procedure
16.4.6. ebfm_cfgwr_imm_nowt Procedure
16.4.7. ebfm_cfgrd_wait Procedure
16.4.8. ebfm_cfgrd_nowt Procedure
16.4.9. BFM Configuration Procedures
16.4.10. BFM Shared Memory Access Procedures
16.4.11. BFM Log and Message Procedures
16.4.12. Verilog HDL Formatting Functions
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7. Reset and Clocks
The following figure shows the hard reset controller that is embedded inside the Hard IP for PCI Express* . This controller takes in the npor and pin_perst inputs and generates the internal reset signals for other modules in the Hard IP.
Figure 48. Reset Controller in Arria® 10 or Cyclone® 10 GX Devices
Note: If FLR is active or has yet to complete, avoid performing a warm reset or asserting pin_perst. Otherwise, the PCIe link may become unstable and will not be able to recover without a cold reset.
Note: The minimum interval time required between two consecutive pin_perst's or hot resets is 60us to ensure link stability. More specifically, the deassertion of pin_perst or hot reset, and the assertion of the next pin_perst or hot reset should be separated by at least 60us.