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 9.4_STABLE              February 22, 2018             NetBSD 9.4_STABLE