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SDTEMP(4)		 BSD 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.

BSD				January 8, 2011				   BSD

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