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SE97 Datasheet(PDF) 29 Page - NXP Semiconductors

Part # SE97
Description  DDR memory module temp sensor with integrated SPD, 3.3 V
PDF  54 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

SE97 Datasheet(HTML) 29 Page - NXP Semiconductors

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SE97_5
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 — 6 August 2009
29 of 54
NXP Semiconductors
SE97
DDR memory module temp sensor with integrated SPD, 3.3 V
8.5 Temperature Trip Point registers
8.5.1 Upper Boundary Alarm Trip register (16-bit read/write)
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 15.
Upper Boundary Alarm Trip register bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
RFU
SIGN
UBT
Default
00000000
Access
R
R
R
R/W
R/W
R/W
R/W
R/W
Bit
7
6
5
4
3
2
1
0
Symbol
UBT
RFU
Default
00000000
Access
R/W
R/W
R/W
R/W
R/W
R/W
R
R
Table 16.
Upper Boundary Alarm Trip register bit description
Bit
Symbol
Description
15:13
RFU
reserved; always ‘0’
12
SIGN
Sign (MSB)
11:2
UBT
Upper Boundary Alarm Trip Temperature (LSB = 0.25
°C)
1:0
RFU
reserved; always ‘0’



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