# anill-15/mac-unit architecture

> Architecture diagram of the GitHub repository anill-15/mac-unit, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-25). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/anill-15/mac-unit
- Repository: https://github.com/anill-15/mac-unit

## Overview

This repository describes a Verilog MAC unit: operands are multiplied, the product is added to the prior accumulated value, and the updated value is retained for subsequent operations. The README identifies the multiplier, adder, accumulator register, clock, reset, and control logic as product components. Source excerpts were unavailable, so the graph reflects documented behavior only; it does not infer how the other Verilog files are wired.

Main entry points: [`mac_top.v`](https://github.com/anill-15/mac-unit/blob/main/mac_top.v) (Accumulator register)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_datapath["MAC datapath"]
  node_mac["MAC unit<br/>[mac_top.v]"]
  node_multiplier["Multiplier<br/>[mac_top.v]"]
  node_adder["Adder<br/>[mac_top.v]"]
  node_accumulator["Accumulator register<br/>[mac_top.v]"]
end

node_operands(("Input operands"))
node_result(("Accumulated result"))
node_clock_reset(("Clock and reset"))

node_operands -->|"supplies operands"| node_mac
node_mac -->|"dispatches multiply"| node_multiplier
node_multiplier -->|"provides product"| node_adder
node_accumulator -->|"provides prior value"| node_adder
node_adder -->|"stores sum"| node_accumulator
node_accumulator -->|"exposes value"| node_result
node_clock_reset -->|"controls operation"| node_mac

click node_mac "https://github.com/anill-15/mac-unit/blob/main/mac_top.v"
click node_multiplier "https://github.com/anill-15/mac-unit/blob/main/mac_top.v"
click node_adder "https://github.com/anill-15/mac-unit/blob/main/mac_top.v"
click node_accumulator "https://github.com/anill-15/mac-unit/blob/main/mac_top.v"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_mac,node_multiplier,node_adder,node_accumulator toneBlue
class node_operands,node_result,node_clock_reset toneIndigo
```

## Components

### MAC datapath

- [MAC unit](https://github.com/anill-15/mac-unit/blob/main/mac_top.v): `mac_top.v`
- [Multiplier](https://github.com/anill-15/mac-unit/blob/main/mac_top.v): `mac_top.v`
- [Adder](https://github.com/anill-15/mac-unit/blob/main/mac_top.v): `mac_top.v`
- [Accumulator register](https://github.com/anill-15/mac-unit/blob/main/mac_top.v): `mac_top.v`

### Other components

- **Input operands**
- **Accumulated result**
- **Clock and reset**

## Connections

- Input operands → MAC unit: supplies operands
- MAC unit → Multiplier: dispatches multiply
- Multiplier → Adder: provides product
- Accumulator register → Adder: provides prior value
- Adder → Accumulator register: stores sum
- Accumulator register → Accumulated result: exposes value
- Clock and reset → MAC unit: controls operation