mt9jsf12872a Micron Semiconductor Products, mt9jsf12872a Datasheet - Page 16

• Manufacturer Part Number: mt9jsf12872a
• Description: 1gb X72, Ecc, Sr 240-pin Ddr3 Sdram Udimm
• Manufacturer: Micron Semiconductor Products

Table 18:
Figure 4:
PDF: 09005aef8300b5ee/Source: 09005aef8300b63a
JSF9C128x72A.fm - Rev. A 3/08 EN
10:9
Bit
5
6
7
8
Description
Clear event
0: No effect
1: Clears the event when the temperature sensor is in
the interrupt mode
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
Above window bit
Configuration Register Bit Descriptions (continued)
Hysteresis
Below window bit
Notes:
1. T
2. T
3. Hyst is the value set in the hysteresis bits of the configuration register.
T
T
H
L
H
L
is the value set in the alarm temperature lower boundary trip register.
is the value set in the alarm temperature upper boundary trip register.
2
1
Temperature Sensor with Serial Presence-Detect EEPROM
1GB (x72, ECC, SR) 240-Pin DDR3 SDRAM UDIMM
16
Notes
The shutdown mode is a power-saving mode that
disables the temperature sensor.
When enabled, a hysteresis is applied to temperature
movement around the trip points. 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 programmed value. These values will reset
when the temperature drops below the trip points
minus the set hysteresis level; In this case, this would be
critical temperature minus 6°C.
The hysteresis is applied both to the above alarm
window and the below alarm window bits found in the
read-only temperature register. EVENT# is also affected
by this register.
Micron Technology, Inc., reserves the right to change products or specifications without notice.
T
H
-
Hyst
3
©2008 Micron Technology, Inc. All rights reserved
T
L
-
Hyst