---
name: "nsphy"
section: "4"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["openbsd"]
url: "https://new.carta.tech/nsphy"
---

# nsphy(4)

National Semiconductor DP83840 10/100 Ethernet PHY

## NAME

**nsphy** – National Semiconductor DP83840 10/100 Ethernet PHY

## SYNOPSIS

**nsphy\* at mii?**

## DESCRIPTION

The **nsphy** driver supports the National Semiconductor DP83840 and DP83840A 10/100 Ethernet PHYs. These PHYs are found on a variety of Ethernet interfaces.

## SEE ALSO

[ifmedia(4)](/ifmedia/4.md), [intro(4)](/intro/4.md), [mii(4)](/mii/4.md), [ifconfig(8)](/ifconfig/8.md)