April 3, 2008 SMSC 4

### NAME

smsc - Standard Microsystems Corporation LPC47B397 Super I/O

### SYNOPSIS

smsc0 at isa? port 0x2e

### DESCRIPTION

The smsc driver provides support for the hardware monitoring portion of the Standard Microsystems Corporation LPC47B397, SCH5307-NS and SCH5317 Super I/O chips to be used with the envsys(4) API.

The chip supports 8 sensor inputs:

Sensor | Units | Typical Use
```Temp0` | `uK` | `CPU 1 Temperature`
```Temp1` | `uK` | `CPU 2 Temperature`
```Temp2` | `uK` | `Ambient Temperature`
```Temp3` | `uK` | `unused`
```Fan0` | `RPM` | `CPU 1 Fan`
```Fan1` | `RPM` | `unused`
```Fan2` | `RPM` | `unused`
```Fan3` | `RPM` | `CPU 2 Fan`

### HARDWARE

Motherboards with the chip supported by the smsc driver include:

  Tyan Thunder K8WE (S2895)

### SEE ALSO

envsys(4), envstat(8)

### HISTORY

The smsc device appeared in NetBSD5.0.