---
title: "RMII versus MII"
url: "https://maker.wiznet.io/forum/10197"
markdown_url: "https://maker.wiznet.io/forum/10197/md"
type: "Forum topic"
category: "MCU & Boards"
author: "kxt2000cn"
created: "2014-05-02T10:11:47+09:00"
last_activity: "2017-05-04T08:32:39+09:00"
language: "en"
views: 792
replies: 0
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# RMII versus MII

## Question

Asked by kxt2000cn on 2014-05-02 in MCU & Boards.

We are currently developing multiport product, we would like to consider using W3150A, however, the high pin count of MII is really a big problem. Is there a plan for you to add an option to W3150A so that a RMII interface could be selected by user, for example, with a ‘mode’ selecting pin (between MII and RMII)?

---

Source: https://maker.wiznet.io/forum/10197