Module Name: src
Committed By: jdc
Date: Sun Jan 3 17:28:46 UTC 2016
Modified Files:
src/share/man/man4: lmtemp.4
Log Message:
Mention supported chips and their differences.
Mention display and setting of chip temperature limits.
To generate a diff of this commit:
cvs rdiff -u -r1.3 -r1.4 src/share/man/man4/lmtemp.4
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/share/man/man4/lmtemp.4
diff -u src/share/man/man4/lmtemp.4:1.3 src/share/man/man4/lmtemp.4:1.4
--- src/share/man/man4/lmtemp.4:1.3 Mon Oct 8 17:56:59 2012
+++ src/share/man/man4/lmtemp.4 Sun Jan 3 17:28:46 2016
@@ -1,4 +1,4 @@
-.\" $NetBSD: lmtemp.4,v 1.3 2012/10/08 17:56:59 njoly Exp $
+.\" $NetBSD: lmtemp.4,v 1.4 2016/01/03 17:28:46 jdc Exp $
.\"
.\" Copyright (c) 2005 KIYOHARA Takashi
.\" All rights reserved.
@@ -24,7 +24,7 @@
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
-.Dd April 4, 2008
+.Dd January 1, 2016
.Dt LMTEMP 4
.Os
.Sh NAME
@@ -37,18 +37,13 @@ The
.Nm
driver provides support for the
.Tn National Semiconductor
-LM on iicbus series temperatures and register compatible chips to be used
-with the
-.Xr envsys 4
-API.
-The
-.Nm
-supports ranges of the temperature between +125 from -55.
+LM on iicbus series temperature sensors and register compatible chips.
.Pp
Each device is specified by the value of the address and flags.
-.Bl -column "Temperature" "0x48 - 0x4f" "flags" -offset indent
-.It Sy "Temperature" Ta Sy "addr" Ta Sy "flags"
+.Bl -column "Device" "0x48 - 0x4f" "flags" -offset indent
+.It Sy "Device" Ta Sy "addr" Ta Sy "flags"
.It Li "LM75" Ta "0x48 - 0x4f" Ta "0x0000"
+.It Li "LM75A" Ta "0x48 - 0x4f" Ta "0x0000"
.It Li "DS75" Ta "0x48 - 0x4f" Ta "0x0001"
.It Li "LM77" Ta "0x48 - 0x4b" Ta "0x0002"
.El
@@ -56,17 +51,27 @@ Each device is specified by the value of
Chips supported by the
.Nm
driver include:
-.Bl -item -offset indent
-.It
-.Tn National Semiconductor
-.Em LM75
-.It
-.Tn National Semiconductor
-.Em LM77
-.It
-.Tn Dallas Semiconductor
-.Em DS75
+.Bl -column "National Semiconductor LM75" "-55 \(en +125" "Resolution" \
+-offset indent
+.It Sy "Device" Ta Sy "Range" Ta Sy "Resolution"
+.It Li "National Semiconductor LM75" Ta "-55 \(en +125" Ta "0.5 degC"
+.It Li "Texas Instruments LM75A" Ta "-55 \(en +125" Ta "0.5 degC"
+.It Li "Dallas Semiconductor DS75" Ta "-55 \(en +125" Ta "0.0625 degC"
+.It Li "National Semiconductor LM77" Ta "-55 \(en +130" Ta "0.5 degC"
.El
+.Pp
+The LM75, LM75A, and DS75 have a programmable high temperature limit.
+When this is exceeded, the device asserts an over-temperature output.
+.Pp
+The LM77 has programmable low and high temperature limits.
+Exceeding either of these causes the device to assert an interrupt output.
+It also has a programmable critical high temperature limit, and
+exceeding this causes the device to assert a separate critical alarm
+output.
+.Pp
+The sensor and limit values are made available through the
+.Xr envstat 8
+interface.
.Sh SEE ALSO
.Xr envsys 4 ,
.Xr envstat 8
