SDTEMP(4) NetBSD Kernel Interfaces Manual SDTEMP(4)

NAME

sdtempJEDEC JC-42.4 compatible memory module temperature sensors

SYNOPSIS

sdtemp0 at iic? addr 0x18
sdtemp0 at iic? addr 0x19
sdtemp0 at iic? addr 0x1a
sdtemp0 at iic? addr 0x1b
sdtemp0 at iic? addr 0x1c
sdtemp0 at iic? addr 0x1d
sdtemp0 at iic? addr 0x1e
sdtemp0 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:

SEE ALSO

envsys(4), envstat(8)

HISTORY

The sdtemp device appeared in NetBSD 6.0.

BUGS

Interrupt support is unimplemented.
January 8, 2011 NetBSD 5.99