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1. Agilex™ 5 Embedded Memory Overview
2. Agilex™ 5 Embedded Memory Architecture and Features
3. Agilex™ 5 Embedded Memory Design Considerations
4. Agilex™ 5 Embedded Memory IP References
5. Agilex™ 5 Embedded Memory Debugging
6. Document Revision History for the Embedded Memory User Guide: Agilex™ 5 FPGAs and SoCs
2.1. Byte Enable in Agilex™ 5 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. Agilex™ 5 Embedded Memory Clocking Modes
2.6. Agilex™ 5 Embedded Memory Configurations
2.7. Force-to-Zero
2.8. Coherent Read Memory
2.9. Freeze Logic
2.10. True Dual Port Dual Clock Emulator
2.11. Initial Value of Read and Write Address Registers
2.12. Timing/Power Optimization Feature in M20K Blocks
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. Advanced Settings in Quartus® Prime Software for Memory
3.9. Consider the Memory Depth Setting
3.10. Consider Registering the Memory Output
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. Changing Parameter Settings Manually
4.1.8. RAM and ROM Interface Signals
4.2.1. Release Information for FIFO Intel® FPGA IP
4.2.2. Configuration Methods
4.2.3. Specifications
4.2.4. FIFO Functional Timing Requirements
4.2.5. SCFIFO ALMOST_EMPTY Functional Timing
4.2.6. FIFO Output Status Flag and Latency
4.2.7. FIFO Metastability Protection and Related Options
4.2.8. FIFO Synchronous Clear and Asynchronous Clear Effect
4.2.9. SCFIFO and DCFIFO Show-Ahead Mode
4.2.10. Different Input and Output Width
4.2.11. DCFIFO Timing Constraint Setting
4.2.12. Coding Example for Manual Instantiation
4.2.13. Instantiation Template
4.2.14. Design Example
4.2.15. Gray-Code Counter Transfer at the Clock Domain Crossing
4.2.16. Guidelines for Embedded Memory ECC Feature
4.2.17. FIFO Intel® FPGA IP Parameters
4.2.18. Reset Scheme
4.3.1. Release Information for Shift Register (RAM-based) Intel® FPGA IP
4.3.2. Shift Register (RAM-based) Intel® FPGA IP Features
4.3.3. Shift Register (RAM-based) Intel® FPGA IP General Description
4.3.4. Shift Register (RAM-based) Intel® FPGA IP Parameter Settings
4.3.5. Shift Register Ports and Parameters Setting
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2.1. Byte Enable in Agilex™ 5 Embedded Memory Blocks
The Agilex™ 5 embedded memory blocks support byte enable controls.
- The byte enable controls mask the input data so that only specific bytes of data are written. The unwritten bytes retain the values written previously.
- The write enable (wren) signal, together with the byte enable (byteena) signal, control the write operations on the embedded memory blocks. By default, the byteena signal is high (enabled) and only the wren signal controls the writing.
- The byte enable registers do not have a clear port.
- The LSB of the byteena signal corresponds to the LSB of the data bus.
- The byte enable signals are active high.
- The byte width for the byte enable signal may differ depending on your selected memory block in the embedded memory IP parameter editors.