---
title: "Wiz5500io getVERSIONR not working"
url: "https://maker.wiznet.io/forum/11736"
markdown_url: "https://maker.wiznet.io/forum/11736/md"
type: "Forum topic"
category: "Ethernet Chips"
author: "biosbob"
created: "2016-03-15T23:02:47+09:00"
last_activity: "2017-05-04T08:38:27+09:00"
language: "en"
views: 617
replies: 0
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# Wiz5500io getVERSIONR not working

## Question

Asked by biosbob on 2016-03-15 in Ethernet Chips.

i am seeing strange results when i try to read the VERSIONR on my Wiz5500io… here is the result of the SPI command:

[url][Dropbox - w5500-bad.png - Simplify your life](https://www.dropbox.com/s/sgufh999fxcib5k/w5500-bad.png?dl=0%5B/url%5D)

when i run the exact same program using another W5500 shield, i see what i believe is the correct response (0x4):

[url][Dropbox - w5500-good.png - Simplify your life](https://www.dropbox.com/s/av5ovbip6oy4rxm/w5500-good.png?dl=0%5B/url%5D)

i have held the RST line low for 1ms on my Wiz5500io, and have seen the RDY line go from 0->1; i have also waited another 200ms before sending this first SPI command…

the fact that i’m not see that 0x1, 0x2, 0x3, … sequence on the SPI command sent to the Wiz5500io makes me suspicious… reading other registers such as PHYCFGR also return 0…

any ideas???

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Source: https://maker.wiznet.io/forum/11736