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Command: sdtemp | Section: 4 | Source: NetBSD | File: sdtemp.4
SDTEMP(4) FreeBSD 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:
o Analog Devices ADT7408
o Atmel AT30TS00 and AT30TSE004
o On semiconductor (Catalyst) CAT34TS02, CAT34TS02C, CAT34TS04
and CAT6095
o Giantec Semiconductor GT30TS00 and GT34TS02
o Integrated Deviced Technology TSE2002B3, TSE2002GB2,
TSE2004GB2, TS3000B3, TS3000GB0, TS3000GB2, and TS30001GB2
o Maxim MAX6604
o Microchip Technology EMC1501, MCP9804, MCP9805, MCP9843,
MCP98242, MCP98243, and MCP98244
o NXP Semiconductors SE97 and SE98
o 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.
FreeBSD 14.1-RELEASE-p8 February 22, 2018 FreeBSD 14.1-RELEASE-p8