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1. About LL Ethernet 10G MAC
2. Getting Started
3. LL Ethernet 10G MAC Intel® FPGA IP Design Examples
4. Functional Description
5. Configuration Registers
6. Interface Signals
7. Low Latency Ethernet 10G MAC Intel® FPGA IP User Guide Archives
8. Document Revision History for the Low Latency Ethernet 10G MAC Intel® FPGA IP User Guide
2.1. Introduction to Intel® FPGA IP Cores
2.2. Installing and Licensing Intel® FPGA IP Cores
2.3. Specifying the IP Core Parameters and Options ( Intel® Quartus® Prime Pro Edition)
2.4. IP Core Generation Output ( Intel® Quartus® Prime Pro Edition)
2.5. Files Generated for Intel IP Cores (Legacy Parameter Editor)
2.6. Simulating Intel® FPGA IP Cores
2.7. Creating a Signal Tap Debug File to Match Your Design Hierarchy
2.8. Parameter Settings for the LL Ethernet 10G MAC Intel® FPGA IP Core
2.9. Upgrading the Low Latency Ethernet 10G MAC Intel® FPGA IP Core
2.10. Design Considerations for the Low Latency Ethernet 10G MAC Intel® FPGA IP Core
5.1. Register Map
5.2. Register Access Definition
5.3. Primary MAC Address
5.4. MAC Reset Control Register
5.5. TX Configuration and Status Registers
5.6. Flow Control Registers
5.7. Unidirectional Control Registers
5.8. RX Configuration and Status Registers
5.9. Timestamp Registers
5.10. ECC Registers
5.11. Statistics Registers
6.1. Clock and Reset Signals
6.2. Speed Selection Signal
6.3. Error Correction Signals
6.4. Unidirectional Signals
6.5. Avalon® Memory-Mapped Interface Programming Signals
6.6. Avalon® Streaming Data Interfaces
6.7. Avalon® Streaming Flow Control Signals
6.8. Avalon® Streaming Status Interface
6.9. PHY-side Interfaces
6.10. IEEE 1588v2 Interfaces
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4.4.5. Inter-Packet Gap Generation and Insertion
The MAC TX maintains an average IPG between TX frames as required by the IEEE 802.3 Ethernet standard. The average IPG is maintained at 96 bit times (12 byte times) using the deficit idle count (DIC). The MAC TX inserts or deletes idle bytes depending on the value of the DIC; the DIC must be between 9 to 15 bytes. Averaging the IPG ensures that the MAC utilizes the maximum available bandwidth.
For 10M/100M/1G/2.5G operations, however, the MAC TX maintains a minimum IPG of 12 bytes time.