ygbzyem/tdm-4---channel-multiplerxer-demultiplexer

How ygbzyem/tdm-4---channel-multiplerxer-demultiplexer works

This repository implements a fixed, counter-driven four-channel TDM RTL datapath and a Python reference-and-check workflow. The main runtime path serializes four input bytes onto one wire, then reconstructs them into channel outputs; the shared counter and top-level timing glue coordinate both sides. The verification branch compares RTL simulation outputs, stream bits, and measured latency against the Python model, then produces reports and an optional workbook. RTL wiring follows the README’s explicit block diagram; Python connections use the shown imports and calls. RTL implementation details beyond the README were not sampled.

Main entry points: compare_output.py RTL Comparison · tdm_top.v Timing Glue · tdm_mux.v Channel Mux · tdm_demux.v Channel Demux

Components 16

TDM RTL

Timing Counter src/tdm_counter.v
Timing Glue src/tdm_top.v
Channel Mux src/tdm_mux.v
TX Shift Register src/tx_shift_reg.v
TDM Data Wire src/tdm_top.v
RX Shift Register src/rx_shift_reg.v
Channel Demux src/tdm_demux.v

Reference Model

Golden Model golden_model/golden_model.py

Verification

RTL Comparison golden_model/compare_output.py
Verification Runner golden_model/run_verification.py
Frame Check golden_model/timing_checker.py
Latency Check golden_model/latency_checker.py
Report Writer golden_model/report_generator.py
Workbook Export golden_model/export_excel.py

Other components

Channel Inputs
Channel Outputs

Connections 15

Channel Inputs → Channel Mux: supplies bytes README.md
Timing Counter → Timing Glue: provides timing README.md
Timing Glue → Channel Mux: selects channel README.md
Channel Mux → TX Shift Register: feeds byte README.md
TX Shift Register → TDM Data Wire: serializes onto README.md
TDM Data Wire → RX Shift Register: feeds serial data README.md
RX Shift Register → Channel Demux: provides completed byte README.md
Timing Glue → Channel Demux: aligns channel selection README.md
Channel Demux → Channel Outputs: updates channels README.md
Verification Runner → RTL Comparison: runs comparison golden_model/run_verification.py
RTL Comparison → Golden Model: computes expected results golden_model/compare_output.py
RTL Comparison → Frame Check: checks frame length golden_model/compare_output.py
RTL Comparison → Latency Check: checks measured latency golden_model/compare_output.py
RTL Comparison → Report Writer: writes report golden_model/compare_output.py
RTL Comparison → Workbook Export: exports workbook golden_model/compare_output.py

Drawn by GitDiagram on November 10, 2026 from the repository's file tree, README and source files. Read as Markdown ·