---
title: "W5100 Ethernet Shield"
url: "https://maker.wiznet.io/forum/9720"
markdown_url: "https://maker.wiznet.io/forum/9720/md"
type: "Forum topic"
category: "Ethernet Chips"
author: "GuessingGame"
created: "2013-12-04T21:41:02+09:00"
last_activity: "2017-05-04T08:30:35+09:00"
language: "en"
views: 438
replies: 1
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# W5100 Ethernet Shield

## Question

Asked by GuessingGame on 2013-12-04 in Ethernet Chips.

Hi Guys, I’m working on the W5100 ethernet shield from adruino and I was wondering what SPI mode does it use?
I have looked up the data sheet and found that the W5100 chip uses SPI modes (0,3)
Does this mean that it uses all 4 modes?

Thank you.

## Replies

### Reply 1 by jbkim, 2013-12-05

Hi,

Arduino Ethernet shield use SPI to connect the W5100.
“SPI modes (0,3)” means W5100 only support SPI mode 0 and 3.

Thanks.

---

Source: https://maker.wiznet.io/forum/9720