graph LR
Arbiter_Module["Arbiter Module"]
8b_10b_Decoder_Module["8b/10b Decoder Module"]
AXI4_Lite_Slave_Interface["AXI4-Lite Slave Interface"]
Requesting_Master["Requesting Master"]
Shared_Resource["Shared Resource"]
Physical_Layer_PHY_["Physical Layer (PHY)"]
Data_Processing_Logic["Data Processing Logic"]
AXI4_Lite_Master["AXI4-Lite Master"]
Slave_Core_Logic["Slave Core Logic"]
Requesting_Master -- "requests access from" --> Arbiter_Module
Arbiter_Module -- "grants access to" --> Requesting_Master
Arbiter_Module -- "manages access to" --> Shared_Resource
Physical_Layer_PHY_ -- "sends encoded data to" --> 8b_10b_Decoder_Module
8b_10b_Decoder_Module -- "provides decoded data to" --> Data_Processing_Logic
AXI4_Lite_Master -- "communicates with" --> AXI4_Lite_Slave_Interface
AXI4_Lite_Slave_Interface -- "interfaces with" --> Slave_Core_Logic
This hardware subsystem is composed of three core Verilog modules: an Arbiter Module, an 8b/10b Decoder Module, and an AXI4-Lite Slave Interface. The Arbiter Module is central to resource management, mediating Requesting Master access to a Shared Resource by granting exclusive access. Concurrently, the 8b/10b Decoder Module processes high-speed serial data, receiving encoded streams from the Physical Layer (PHY) and delivering decoded information to Data Processing Logic. The AXI4-Lite Slave Interface provides a standard communication bridge, enabling an AXI4-Lite Master to interact with the Slave Core Logic for memory-mapped operations. These components collectively demonstrate fundamental building blocks for robust and efficient hardware designs, facilitating controlled resource sharing, reliable data transmission, and standardized peripheral communication.
Implements a hardware arbiter, a critical component for managing access to shared resources (e.g., memory, peripherals) by multiple requesting modules. It ensures that only one requester is granted access at a time, preventing data corruption or deadlocks. This component is fundamental for robust resource arbitration in hardware designs.
Related Classes/Methods:
arbiter.v
Provides the decoding logic for the 8b/10b encoding scheme, commonly used in high-speed serial communication links (e.g., Gigabit Ethernet, Fibre Channel). It converts 10-bit encoded symbols back into their original 8-bit data, ensuring DC balance and sufficient transitions for clock recovery. This module is essential for high-speed serial communication interfaces.
Related Classes/Methods:
decoder_8b10b.v
Represents a slave interface for the AXI4-Lite protocol, a lightweight version of ARM's AMBA AXI protocol. This module allows an AXI master (e.g., a processor or DMA controller) to read from and write to registers or memory within the slave component. It is a standard interface for memory-mapped peripherals in System-on-Chip (SoC) designs.
Related Classes/Methods:
S00_axi_lite.v
Represents any module or entity that requires access to a shared resource, initiating requests to the Arbiter Module.
Related Classes/Methods: None
Represents a hardware resource (e.g., memory block, peripheral) whose access needs to be managed and arbitrated among multiple Requesting Masters.
Related Classes/Methods: None
Handles the lowest level of data transmission, including serialization and deserialization of data, and sends encoded data to the 8b/10b Decoder Module.
Related Classes/Methods: None
Represents higher-level logic or modules that consume and process the decoded data provided by the 8b/10b Decoder Module.
Related Classes/Methods: None
Represents a master device (e.g., CPU, DMA controller) that initiates read and write transactions over the AXI4-Lite bus to communicate with slave devices.
Related Classes/Methods: None
Represents the internal logic or memory within a slave device that the AXI4-Lite Slave Interface interacts with to fulfill read/write requests from an AXI4-Lite Master.
Related Classes/Methods: None