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

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