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 DDR3
     SDRAM 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:

           ·   Catalyst CAT34TS02 and CAT6095

           ·   Analog Devices ADT7408

           ·   Integrated Deviced Technology TSE2002B3 and TSE3000B3

           ·   Maxim MAX6604

           ·   Microchip Technology MCP9805, MCP9843, MCP98242, and MCP98243

           ·   NXP Semiconductors SE97 and SE98

           ·   STmicroelectronics STTS424 and STTS424E


SEE ALSO

     envsys(4), envstat(8)


HISTORY

     The sdtemp device appeared in NetBSD 6.0.


BUGS

     Interrupt support is unimplemented.

NetBSD 7.0                      January 8, 2011                     NetBSD 7.0