se98a NXP Semiconductors, se98a Datasheet - Page 22

• 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
8.5.2 Lower Boundary Alarm Trip register (16-bit read/write)
8.5.3 Critical Alarm Trip register (16-bit read/write)
The value is the lower 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 14.
Table 15.
The value is the critical temperature. The data format is 2’s complement with
bit 2 = 0.25 C. RFU bits will always report zero.
Table 16.
Table 17.
Bit
Symbol
Reset
Access
Bit
15:13
12
11:2
1:0
Bit
Symbol
Reset
Access
Bit
15:13
12
11:2
1:0
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Symbol
RFU
SIGN
LBT
RFU
Symbol
RFU
SIGN
CT
RFU
Lower Boundary Alarm Trip register bit allocation
Lower Boundary Alarm Trip register bit description
Lower Boundary Alarm Trip register bit allocation
Critical Alarm Trip register bit description
R/W
R/W
15
15
R
R
0
0
7
0
7
0
RFU
RFU
R/W
R/W
Rev. 01 — 5 March 2009
14
14
R
R
0
0
6
0
6
0
Description
reserved; always 0
Sign (MSB)
Lower Boundary Alarm Trip Temperature (LSB = 0.25 C)
reserved; always 0
Description
reserved; always 0
Sign (MSB)
Critical Alarm Trip Temperature (LSB = 0.25 C)
reserved; always 0
R/W
R/W
13
13
R
R
0
0
5
0
5
0
LBT[5:0]
CT[5:0]
DDR memory module temp sensor, 1.7 V to 3.6 V
SIGN
SIGN
R/W
R/W
R/W
R/W
12
12
0
0
4
0
4
0
R/W
R/W
R/W
R/W
11
11
0
0
3
0
3
0
R/W
R/W
R/W
R/W
10
10
0
0
2
0
2
0
LBT[9:6]
CT[9:6]
© NXP B.V. 2009. All rights reserved.
R/W
R/W
9
0
R
9
0
R
1
0
1
0
SE98A
RFU
RFU
R/W
R/W
22 of 42
8
0
8
0
R
R
0
0
0
0