Stratix® 10 Embedded Memory User Guide

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ID 683423
Date 3/29/2024
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Document Table of Contents
Document Table of Contents x
1. Stratix® 10 Embedded Memory Overview 2. Stratix® 10 Embedded Memory Architecture and Features 3. Stratix® 10 Embedded Memory Design Considerations 4. Stratix® 10 Embedded Memory IP References 5. Intel Stratix 10 Embedded Memory Design Example 6. Stratix® 10 Embedded Memory User Guide Archives 7. Document Revision History for the Stratix® 10 Embedded Memory User Guide
1. Stratix® 10 Embedded Memory Overview x
1.1. Stratix® 10 Embedded Memory Features
2. Stratix® 10 Embedded Memory Architecture and Features x
2.1. Byte Enable in Stratix® 10 Embedded Memory Blocks 2.2. Address Clock Enable Support 2.3. Asynchronous Clear and Synchronous Clear 2.4. Memory Blocks Error Correction Code (ECC) Support 2.5. Force-to-Zero 2.6. Coherent Read Memory 2.7. Freeze Logic 2.8. True Dual Port Dual Clock Emulator 2.9. 'X' Propagation Support in Simulation 2.10. Stratix® 10 Supported Embedded Memory IPs 2.11. Stratix® 10 Embedded Memory Clocking Modes 2.12. Stratix® 10 Embedded Memory Configurations 2.13. Initial Value of Read and Write Address Registers
2.1. Byte Enable in Stratix® 10 Embedded Memory Blocks x
2.1.1. Byte Enable Controls 2.1.2. Data Byte Output 2.1.3. Byte Enable Behavior
2.4. Memory Blocks Error Correction Code (ECC) Support x
2.4.1. Parity Bit 2.4.2. ECC Parity Flip 2.4.3. ECC Read-During-Write Behavior 2.4.4. Error Correction Code Truth Table
2.6. Coherent Read Memory x
2.6.1. Forwarding Logic
2.8. True Dual Port Dual Clock Emulator x
2.8.1. Reducing the DCFIFO Depth
2.11. Stratix® 10 Embedded Memory Clocking Modes x
2.11.1. Single Clock Mode 2.11.2. Read/Write Clock Mode 2.11.3. Input/Output Clock Mode 2.11.4. Asynchronous/Synchronous Clears in Clocking Modes 2.11.5. Output Read Data in Simultaneous Read/Write 2.11.6. Independent Clock Enables in Clocking Modes
2.12. Stratix® 10 Embedded Memory Configurations x
2.12.1. Mixed-Width Port Configurations
3. Stratix® 10 Embedded Memory Design Considerations x
3.1. Consider the Memory Block Selection 3.2. Consider the Concurrent Read Behavior 3.3. Customize Read-During-Write Behavior 3.4. Consider Power-Up State and Memory Initialization 3.5. Reduce Power Consumption 3.6. Avoid Providing Non-Deterministic Input 3.7. Avoid Changing Clock Signals and Other Control Signals Simultaneously 3.8. Including the Reset Release Intel® FPGA IP in Your Design 3.9. Resource and Timing Optimization Feature in MLAB Blocks 3.10. Consider the Memory Depth Setting 3.11. Consider Registering the Memory Output
3.3. Customize Read-During-Write Behavior x
3.3.1. Same-Port Read-During-Write Mode 3.3.2. Mixed-Port Read-During-Write Mode
4. Stratix® 10 Embedded Memory IP References x
4.1. On Chip Memory RAM and ROM Intel® FPGA IPs 4.2. eSRAM Intel® FPGA IP 4.3. FIFO Intel® FPGA IP 4.4. FIFO2 Intel® FPGA IP 4.5. Shift Register (RAM-based) Intel® FPGA IP
4.1. On Chip Memory RAM and ROM Intel® FPGA IPs x
4.1.1. Release Information for RAM and ROM Intel® FPGA IPs 4.1.2. RAM: 1-PORT Intel® FPGA IP Parameters 4.1.3. RAM: 2-PORT Intel® FPGA IP Parameters 4.1.4. RAM: 4-PORT Intel® FPGA IP Parameters 4.1.5. ROM: 1-PORT Intel® FPGA IP Parameters 4.1.6. ROM: 2-PORT Intel® FPGA IP Parameters 4.1.7. RAM and ROM Interface Signals 4.1.8. Changing Parameter Settings Manually
4.1.8. Changing Parameter Settings Manually x
4.1.8.1. RAM and ROM Parameter Settings
4.2. eSRAM Intel® FPGA IP x
4.2.1. Release Information for eSRAM Intel® FPGA IP 4.2.2. eSRAM System Features 4.2.3. eSRAM Intel® FPGA IP Parameters 4.2.4. eSRAM Intel® FPGA IP Interface Signals 4.2.5. eSRAM Intel® FPGA IP Simulation Walk-Through 4.2.6. eSRAM Timing Diagrams
4.2.2. eSRAM System Features x
4.2.2.1. eSRAM Specifications 4.2.2.2. eSRAM Usage Model
4.3. FIFO Intel® FPGA IP x
4.3.1. Release Information for FIFO Intel® FPGA IP 4.3.2. Configuration Methods 4.3.3. Specifications 4.3.4. FIFO Functional Timing Requirements 4.3.5. SCFIFO ALMOST_EMPTY Functional Timing 4.3.6. FIFO Output Status Flag and Latency 4.3.7. FIFO Metastability Protection and Related Options 4.3.8. FIFO Synchronous Clear and Asynchronous Clear Effect 4.3.9. SCFIFO and DCFIFO Show-Ahead Mode 4.3.10. Different Input and Output Width 4.3.11. DCFIFO Timing Constraint Setting 4.3.12. Coding Example for Manual Instantiation 4.3.13. Design Example 4.3.14. Gray-Code Counter Transfer at the Clock Domain Crossing 4.3.15. Guidelines for Embedded Memory ECC Feature 4.3.16. FIFO Intel® FPGA IP Parameters 4.3.17. Reset Scheme
4.3.3. Specifications x
4.3.3.1. Verilog HDL Prototype 4.3.3.2. VHDL Component Declaration 4.3.3.3. VHDL LIBRARY-USE Declaration 4.3.3.4. FIFO Signals 4.3.3.5. FIFO Parameter Settings
4.3.8. FIFO Synchronous Clear and Asynchronous Clear Effect x
4.3.8.1. Recovery and Removal Timing Violation Warnings when Compiling a DCFIFO
4.3.11. DCFIFO Timing Constraint Setting x
4.3.11.1. Embedded Timing Constraint 4.3.11.2. User Configurable Timing Constraint
4.3.11.2. User Configurable Timing Constraint x
4.3.11.2.1. SDC Commands
4.4. FIFO2 Intel® FPGA IP x
4.4.1. Release Information for FIFO2 Intel® FPGA IP 4.4.2. Configuration Methods 4.4.3. Fmax Target Measuring Methodology 4.4.4. Performance Considerations 4.4.5. FIFO2 Intel® FPGA IP Features 4.4.6. FIFO2 Intel® FPGA IP Parameters 4.4.7. FIFO2 Intel® FPGA IP Interface Signals 4.4.8. Reset and Clock Schemes
4.4.5. FIFO2 Intel® FPGA IP Features x
4.4.5.1. FIFO2 Specifications
4.4.6. FIFO2 Intel® FPGA IP Parameters x
4.4.6.1. FIFO2 Parameter Settings
4.4.7. FIFO2 Intel® FPGA IP Interface Signals x
4.4.7.1. SCFIFO Signals 4.4.7.2. DCFIFO Signals
4.4.8. Reset and Clock Schemes x
4.4.8.1. Clock Domains 4.4.8.2. Reset
4.4.8.2. Reset x
4.4.8.2.1. FIFO2 Intel® FPGA IP Reset Guidelines
4.5. Shift Register (RAM-based) Intel® FPGA IP x
4.5.1. Release Information for Shift Register (RAM-based) Intel® FPGA IP 4.5.2. Shift Register (RAM-based) Intel® FPGA IP Features 4.5.3. Shift Register (RAM-based) Intel® FPGA IP General Description 4.5.4. Shift Register (RAM-based) Intel® FPGA IP Parameter Settings 4.5.5. Shift Register Ports and Parameters Setting
5. Intel Stratix 10 Embedded Memory Design Example x
5.1. FIFO and FIFO2 Design Example
5.1. FIFO and FIFO2 Design Example x
5.1.1. Generating the Design Example 5.1.2. Simulating the Design Example
5.1.2. Simulating the Design Example x
5.1.2.1. Simulation Results
1. Stratix® 10 Embedded Memory Overview
2. Stratix® 10 Embedded Memory Architecture and Features
3. Stratix® 10 Embedded Memory Design Considerations
4. Stratix® 10 Embedded Memory IP References
5. Intel Stratix 10 Embedded Memory Design Example
6. Stratix® 10 Embedded Memory User Guide Archives
7. Document Revision History for the Stratix® 10 Embedded Memory User Guide

4.4.5.1. FIFO2 Specifications

The following table summarizes the specifications of the FIFO2 Intel® FPGA IP.
Table 58.  FIFO2 Specifications
Feature Storage Type
M20K MLAB
Error Checking and Correcting (ECC) Always 44 No
Read-out Interface

Analogy to Avalon® streaming non-zero readLatency.

For each r_req asserts now, r_valid shall indicate whether there is valid data to be taken (and must be taken) L clock later.

L = 6

Analogy to Avalon® streaming non-zero readLatency

For each r_req asserts now, r_valid shall indicate whether there is valid data to be taken (and must be taken) L clock later.

L = 5
Width (bits)

There is no hard limit on user data width but the internal RAM block is always in 32b x N; where N > 0.

Maximum = 4096b

Default to 1.

There is no hard limit on user data width but the internal RAM block is always in 20b x N; where N > 0.

Maximum = 4080b

Default to 1.
Depth 512 32
Depth Stitching No, user can cascade multiple FIFOs. No, user can cascade multiple FIFOs
Targeted Performance

Stratix® 10, bin1 production device.

32bx512: Up to 850 MHz

512bx512: Up to 700 MHz

Stratix® 10, bin1 production device.

20bx32: Up to 850 MHz

512bx32: Up to 700 MHz
Almost Full No, you can derive this from “Write Used”. No, you can derive this from “Write Used”.
Almost Empty No, you can derive this from “Read Used”. No, you can derive this from “Read Used”.
Read Used Yes, delayed RAM block words measurement excluding in-flight data. Yes, delayed RAM block words measurement excluding in-flight data.
Write Used Yes, delayed RAM block words measurement excluding in-flight data. Yes, delayed RAM block words measurement excluding in-flight data.
RAM with registered read output Always Always
Write full prevention Always, based on internal almost full. Always, based on internal almost full.
Read empty prevention Always Always
Output data initial states Unknown Unknown
Reset Scheme Contains non resettable flops, requires state flushing. Contains non resettable flops, requires state flushing.
RTL Encrypted Encrypted
44 In the FIFO2 Intel® FPGA IP, the ECC mode is embedded within the IP architecture and cannot be disabled. Unlike FIFO Intel® FPGA IP core, there is no ECCSTATUS signal that can be exported for use in your design.
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