MT8KSF12864H Micron Semiconductor Products, MT8KSF12864H Datasheet - Page 18

• Manufacturer Part Number: MT8KSF12864H
• Description: 1.35v Ddr3 Sdram Sodimm
• Manufacturer: Micron Semiconductor Products

Table 21: Configuration Register Bit Descriptions (Continued)
PDF: 09005aef83b0ef39
ksf8c128_256x64hz – Rev. A 6/09 EN
10:9
Bit
6
7
8
Description
Alarm window lock bit
0: Alarm trips are not locked and can be changed
1: Alarm trips are locked and cannot be changed
Critical trip lock bit
0: Critical trip is not locked and can be changed
1: Critical trip is locked and cannot be changed
Shutdown mode
0: Enabled
1: Shutdown
Hysteresis enable
00: Disable
01: Enable at 1.5°C
10: Enable at 3°C
11: Enable at 6°C
1GB, 2GB (x64, SR) 204-Pin 1.35V Halogen-Free DDR3 SODIMM
Temperature Sensor with Serial Presence-Detect EEPROM
18
Notes
The shutdown mode is a power-saving mode that dis-
ables the temperature sensor.
When enabled, a hysteresis is applied to temperature
movement around the trip points (see Figure 4
(page 19)). As an example, if the hysteresis register
is enabled to a delta of 6°C, the preset trip points will
toggle when the temperature reaches the program-
med value. These values will reset when the tempera-
ture drops below the trip points minus the set
hysteresis level. In this case, this would be critical tem-
perature minus 6°C.
The hysteresis is applied to both the above alarm win-
dow and the below alarm window bits found in the
read-only temperature register (see Table 22
(page 19)). EVENT# is also affected by this register.
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