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-# Christmas tree controller (ASIC)
-
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0) [![UPRJ_CI](https://github.com/JulienOury/ChristmasTreeController/actions/workflows/user_project_ci.yml/badge.svg)](https://github.com/JulienOury/ChristmasTreeController/actions/workflows/user_project_ci.yml)
 
-A Christmas tree controller that include  :
+# Christmas tree controller (ASIC)
+
+This project implements a Christmas tree controller that include four dedicated modules :
  - Infrared receiver (protocol NEC)
  - StepMotor controller (full-step, half-step, with strenght control)
  - Led string controller (compatibles WS2812B)
- - Pseudo-rendom generator (32bits)
+ - Pseudo-random generator (32bits)
+
+
+### Architecture
+
+This design is based on following [Caravel user project](https://github.com/efabless/caravel_user_project.git) template.
 
 Below is a representation of the architecture:
 
 ![multi macro](pictures/soc_architecture.png)
 
+
+### Memory mapping
+
+The Wishbone bus address mapping below :
+
+| ADDRESS | DESCRIPTION |
+| ------ | ------ |
+| 0x30000000 | NEC IR receiver |
+| 0x30010000 | PseudoRandom generator |
+| 0x30020000 | Step motor controller |
+| 0x30030000 | String Led controller |
+
+
+### ASIC layout
+
 Below is a representation of the ASIC layout:
 
 ![multi macro](pictures/layout.png)