sdtemp.4 revision 1.4 $NetBSD: sdtemp.4,v 1.4 2011/10/11 17:53:27 njoly Exp $
Copyright (c) 2008 The NetBSD Foundation, Inc.
All rights reserved.
This code is derived from software contributed to The NetBSD Foundation
by Paul Goyette.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
.Dd January 8, 2011 .Dt SDTEMP 4 .Os .Sh NAME .Nm sdtemp .Nd JEDEC JC-42.4 compatible memory module temperature sensors .Sh SYNOPSIS .Cd "sdtemp* at iic? addr 0x18" .Cd "sdtemp* at iic? addr 0x19" .Cd "sdtemp* at iic? addr 0x1a" .Cd "sdtemp* at iic? addr 0x1b" .Cd "sdtemp* at iic? addr 0x1c" .Cd "sdtemp* at iic? addr 0x1d" .Cd "sdtemp* at iic? addr 0x1e" .Cd "sdtemp* at iic? addr 0x1f" .Sh DESCRIPTION The .Nm driver provides support for the .Tn Microchip Technology MCP9805/98242 and other chips that conform to JEDEC Standard 21-C section 4.7. Memory module temperature sensors are optional on DDR2 and DDR3 SDRAM DIMMs. Sensors provided by this driver, including the on-chip thresholds for the Alarm Window and Critical level, are accessed through the .Xr envsys 4 API.
Copyright (c) 2008 The NetBSD Foundation, Inc.
All rights reserved.
This code is derived from software contributed to The NetBSD Foundation
by Paul Goyette.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
.Dd January 8, 2011 .Dt SDTEMP 4 .Os .Sh NAME .Nm sdtemp .Nd JEDEC JC-42.4 compatible memory module temperature sensors .Sh SYNOPSIS .Cd "sdtemp* at iic? addr 0x18" .Cd "sdtemp* at iic? addr 0x19" .Cd "sdtemp* at iic? addr 0x1a" .Cd "sdtemp* at iic? addr 0x1b" .Cd "sdtemp* at iic? addr 0x1c" .Cd "sdtemp* at iic? addr 0x1d" .Cd "sdtemp* at iic? addr 0x1e" .Cd "sdtemp* at iic? addr 0x1f" .Sh DESCRIPTION The .Nm driver provides support for the .Tn Microchip Technology MCP9805/98242 and other chips that conform to JEDEC Standard 21-C section 4.7. Memory module temperature sensors are optional on DDR2 and DDR3 SDRAM DIMMs. Sensors provided by this driver, including the on-chip thresholds for the Alarm Window and Critical level, are accessed through the .Xr envsys 4 API.
p The .Nm supports temperature ranges from -256 to +255 degrees C.
p Chips supported by the .Nm driver include:
p l -bullet -offset indent t .Tn Catalyst .Em CAT34TS02 and .Em CAT6095 t .Tn Analog Devices .Em ADT7408 t .Tn Integrated Deviced Technology .Em TSE2002B3 and .Em TSE3000B3 t .Tn Maxim .Em MAX6604 t .Tn Microchip Technology .Em MCP9805 , .Em MCP9843 , .Em MCP98242 , and .Em MCP98243 t .Tn NXP Semiconductors .Em SE97 and .Em SE98 t .Tn STmicroelectronics .Em STTS424 and .Em STTS424E .El .Sh SEE ALSO .Xr envsys 4 , .Xr envstat 8 .Sh HISTORY The .Nm device appeared in .Nx 6.0 . .Sh BUGS Interrupt support is unimplemented.
Indexes created Mon Oct 20 05:10:11 GMT 2025