se98a NXP Semiconductors, se98a Datasheet - Page 21

• Manufacturer Part Number: se98a
• Description: Ddr Memory Module Temp Sensor, 1.7 V To 3.6 V
• Manufacturer: NXP Semiconductors

NXP Semiconductors
SE98A_1
Product data sheet
8.5.1 Upper Boundary Alarm Trip register (16-bit read/write)
8.5 Temperature Trip Point registers
The value is the upper threshold temperature value for Alarm mode. The data format is
2’s complement with bit 2 = 0.25 C. ‘RFU’ bits will always report zero. Interrupts will
respond to the presently programmed boundary values. If boundary values are being
altered in-system, it is advised to turn off interrupts until a known state can be obtained to
avoid superfluous interrupt activity.
Table 12.
Table 13.
Bit
Symbol
Reset
Access
Bit
15:13
12
11:2
1:0
Bit
Symbol
Reset
Access
Symbol
RFU
SIGN
UBT
RFU
Upper Boundary Alarm Trip register bit allocation
Upper Boundary Alarm Trip register bit description
R/W
15
R
0
7
0
RFU
R/W
Rev. 01 — 5 March 2009
14
R
0
6
0
Description
reserved; always 0
Sign (MSB)
Upper Boundary Alarm Trip Temperature (LSB = 0.25 C)
reserved; always 0
R/W
13
R
0
5
0
UBT[5:0]
DDR memory module temp sensor, 1.7 V to 3.6 V
SIGN
R/W
R/W
12
0
4
0
R/W
R/W
11
0
3
0
R/W
R/W
10
0
2
0
UBT[9:6]
© NXP B.V. 2009. All rights reserved.
R/W
9
0
R
1
0
SE98A
RFU
R/W
21 of 42
8
0
R
0
0