ALTDQ_DQS2 IP Core User Guide

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ID 683742
Date 5/08/2017
Public
Document Table of Contents
Document Table of Contents x
ALTDQ_DQS2 IP Core User Guide
ALTDQ_DQS2 IP Core User Guide x
ALTDQ_DQS2 Features ALTDQ_DQS2 Device Support Resource Utilization and Performance ALTDQ_DQS2 Parameter Settings ALTDQ_DQS2 Data Paths ALTDQ_DQS2 Ports Dynamic Reconfiguration for ALTDQ_DQS2 Stratix V Design Example Arria V Design Example IP-Generate Command ALTDQ_DQS2 IP Core User Guide Archives Document Revision History
ALTDQ_DQS2 Data Paths x
DQ and DQS Input Path DQ and DQS Output Path
DQ and DQS Input Path x
DQ and DQS Input Paths for Stratix V Devices Data Input Path for Arria V, Cyclone V, and Stratix V Devices Blocks in DQ and DQS Data Input Path
Blocks in DQ and DQS Data Input Path x
DQS Logic Capture DDIO to Read FIFO Path FIFO Control
DQ and DQS Output Path x
DQ and DQS Output Path for Stratix V Devices Blocks in DQ and DQS Output Path DQ and DQS Output Path for Arria V and Cyclone V Devices
ALTDQ_DQS2 Ports x
ALTDQ_DQS2 Data Strobe Ports ALTDQ_DQS2 Data Ports ALTDQ_DQS2 Termination Control Ports ALTDQ_DQS2 PLL and DLL Ports ALTDQ_DQS2 Hard FIFO Ports ALTDQ_DQS2 Dynamic Configuration Ports
Dynamic Reconfiguration for ALTDQ_DQS2 x
I/O Configuration Block Bit Sequence for Arria V GZ and Stratix V Devices DQS Configuration Block Bit Sequence for Arria V GZ and Stratix V Devices I/O Configuration Block Bit Sequence for Arria V and Cyclone V Devices DQS Configuration Block Bit Sequence for Arria V and Cyclone V Devices Example Usage of Dynamic Reconfiguration for ALTDQ_DQS2
Stratix V Design Example x
Instantiating ALTDQ_DQS2 IP Core Instantiating the ALTDLL IP Core Instantiating ALT_OCT IP Core Instantiating Altera PLL Setting Up NativeLink and Simulation Settings Understanding Simulation Results—Stratix V Design Example
Instantiating Altera PLL x
Altera PLL Clock Settings Information
Understanding Simulation Results—Stratix V Design Example x
Dynamic Configuration SDC Walkthrough
Dynamic Configuration x
DQS Write Operation Side Read Operation Side Write Operation DQS Read Operation Simulation Results
DQS Read Operation x
DQS Delay Chain Hard Read FIFO
SDC Walkthrough x
Analyzing Same Edge Transfer Constraining Outgoing DQS Strobe
Arria V Design Example x
Instantiating the ALTDQ_DQS2 IP Core Instantiating the ALTDLL IP Core Instantiating ALT_OCT IP Core Instantiating Altera PLL Setting Up NativeLink and Simulation Settings Understanding Simulation Results—Arria V Design Example
Instantiating Altera PLL x
Altera PLL Clock Settings Information
Understanding Simulation Results—Arria V Design Example x
Dynamic Configuration
Dynamic Configuration x
DQS Write Operation Side Read Operation Side Write Operation DQS Read Operation Simulation Results SDC Walkthrough
DQS Read Operation x
DQS Delay Chain VFIFO, LFIFO, and Read FIFO DQS Enable Control
SDC Walkthrough x
Analyzing Same Edge Transfer Constraining Outgoing DQS Strobe Timing Violation tq_analysis.tcl
IP-Generate Command x
Using IP-Generate Command
ALTDQ_DQS2 IP Core User Guide

Understanding Simulation Results—Stratix V Design Example

ln the Stratix V design example, a generic testbench is used to test the write and read operations in the ALTDQ_DQS2 IP core. The following table lists the components in the testbench.

Table 11.  Testbench Components
Component Description
DQS Driver
  • Acts as a host controller, sends read/write commands to the ALTDQ_DQS2 IP core.
  • Compares data read back from a DQS agent to what it should be.
  • Has a side channel (side reads/writes) communicating directly with the DQS agent, bypassing the ALTDQ_DQS2 IP core. Use the data in the side reads/writes to compare with the data sent to or received from the ALTDQ_DQS2 IP core.
DQS Agent
  • Acts as an external memory device.
  • Has a side channel (side reads/writes) communicating directly with the DQS driver, bypassing the ALTDQ_DQS2 IP core. Use the data in the side reads/writes to compare with the data sent to or received from the ALTDQ_DQS2 IP core.
Note: Random data is generated and used in the testbench. You may see other data values if you are using a different operating system and seeds.

The following figure shows the waveform for the testbench generated after executing the top_run_msim_rtl_verilog.do file.

Figure 19. Waveform Example


All ports are in reset mode until the reset_n signal is asserted at 70 ns. Then, the core_clk_fr and core_clk_hr clocks start to toggle. The agent_reset_n_to_dqs signal is asserted at 91 ns to reset the ALTDQ_DQS2 IP core, which is located in top_inst.


Section Content
Dynamic Configuration
SDC Walkthrough

Level Two Title