SDTEMP(4) |
NetBSD Kernel Interfaces Manual |
SDTEMP(4) |
NAME
sdtemp — JEDEC 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:
-
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
HISTORY
The sdtemp device appeared in NetBSD 6.0.
BUGS
Interrupt support is unimplemented.