sdtemp(4) - NetBSD Manual Pages

SDTEMP(4)               NetBSD Kernel Interfaces Manual              SDTEMP(4)


NAME

     sdtemp -- JEDEC JC-42.4 compatible memory module temperature sensors


SYNOPSIS

     sdtemp* at iic? addr 0x18
     sdtemp* at iic? addr 0x19
     sdtemp* at iic? addr 0x1a
     sdtemp* at iic? addr 0x1b
     sdtemp* at iic? addr 0x1c
     sdtemp* at iic? addr 0x1d
     sdtemp* at iic? addr 0x1e
     sdtemp* at iic? addr 0x1f


DESCRIPTION

     The sdtemp driver provides support for the 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 newer
     DIMMs.  Sensors provided by this driver, including the on-chip thresholds
     for the Alarm Window and Critical level, are accessed through the
     envsys(4) API.

     The sdtemp supports temperature ranges from -256 to +255 degrees C.

     Chips supported by the sdtemp driver include TSE2004av compliant devices
     and:

           ·   Analog Devices ADT7408

           ·   Atmel AT30TS00 and AT30TSE004

           ·   On semiconductor (Catalyst) CAT34TS02, CAT34TS02C, CAT34TS04
               and CAT6095

           ·   Giantec Semiconductor GT30TS00 and GT34TS02

           ·   Integrated Deviced Technology TSE2002B3, TSE2002GB2,
               TSE2004GB2, TS3000B3, TS3000GB0, TS3000GB2, and TS30001GB2

           ·   Maxim MAX6604

           ·   Microchip Technology EMC1501, MCP9804, MCP9805, MCP9843,
               MCP98242, MCP98243, and MCP98244

           ·   NXP Semiconductors SE97 and SE98

           ·   STmicroelectronics STTS424, STTS424E, STTS2002, STTS2004, and
               STTS3000


SEE ALSO

     envsys(4), envstat(8)


HISTORY

     The sdtemp device appeared in NetBSD 6.0.


BUGS

     Interrupt support is unimplemented.

NetBSD 9.0                     February 22, 2018                    NetBSD 9.0