---
title: "W7500P Speed issue"
url: "https://maker.wiznet.io/forum/12530"
markdown_url: "https://maker.wiznet.io/forum/12530/md"
type: "Forum topic"
category: "MCU & Boards"
author: "vishnu046"
created: "2017-10-26T07:18:12+09:00"
last_activity: "2018-01-29T00:57:50+09:00"
language: "en"
views: 772
replies: 1
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# W7500P Speed issue

## Question

Asked by vishnu046 on 2017-10-26 in MCU & Boards.

Hi, we are developing an application using W7500P , W7500p always connected in 10Mbps Half Duplex mode only.
**void set_link(SetLink_Type mode)**
used this function with all
**HalfDuplex10 = 0x0000, FullDuplex10 = CNTL_DUPLEX, AUTONEGO = CNTL_AUTONEGO, HalfDuplex100 = CNTL_SPEED, FullDuplex100 = (CNTL_SPEED|CNTL_DUPLEX)**

options , but always wiznet connected in 10 Mbps HalfDuplex Mode . Other End product configuration tried with auto negotiation and with different speeds also.

Any one came across with the same problem?
Please suggest any document or tutorial regarding this.

Thanks
Vishnu .

## Replies

### Reply 1 by irina, 2018-01-29

![](https://avatars.discourse-cdn.com/v4/letter/v/a698b9/48.png) vishnu046:

> W7500p always connected in 10Mbps Half Duplex mode only.

Previously we had inserted the 10M fixed code for the stability of the Ethernet link in the public code for the W7500P, but now it works in auto-nego mode.

Please refer to the link below.

![](https://github.githubassets.com/favicons/favicon.svg) [GitHub](https://github.com/Wiznet/WIZ750SR)

![](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/f/fcf4a18ad49c521008b51b6779240a21f7b44cf2.png)

### [GitHub - Wiznet/WIZ750SR: WIZnet Serial to Ethernet(S2E) module based on...](https://github.com/Wiznet/WIZ750SR)

WIZnet Serial to Ethernet(S2E) module based on W7500 chip, WIZ107/108SR S2E compatible device - GitHub - Wiznet/WIZ750SR: WIZnet Serial to Ethernet(S2E) module based on W7500 chip, WIZ107/108SR S2E...

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Source: https://maker.wiznet.io/forum/12530