LM96000EVAL/NOPB National Semiconductor, LM96000EVAL/NOPB Datasheet - Page 16

• Manufacturer Part Number: LM96000EVAL/NOPB
• Description: BOARD EVALUATION LM96000
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM96000EVAL/NOPB

• Sensor Type: Temperature, Fan Controller
• Sensing Range: 0°C ~ 125°C
• Interface: SMBus (2-Wire/I²C)
• Sensitivity: ±1°C
• Voltage - Supply: 3 V ~ 3.6 V
• Embedded: No
• Utilized Ic / Part: LM96000
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM96000EVAL

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Register
Address
41h
Bit
0
1
2
3
4
5
6
7
4.8 Register 41h: Interrupt Status Register 1
The Interrupt Status Register 1 bits will be automatically set, by the LM96000, whenever a fault condition is detected. A fault
condition is detected whenever a measured value is outside the window set by its limit registers. ZN3 and ZN1 bits will be set when
a diode fault condition, such as a disconect or short, is detected. More than one fault may be indicated in the interrupt register
when read. This register will hold a set bit(s) until the event is read by software. The contents of this register will be cleared (set to
0) automatically by the LM96000 after it is read by software, if the fault condition is no longer exists. Once set, the Interrupt Status
Register 1 bits will remain set until a read event occurs, even if the fault condition no longer exists
This register is read only — a write to this register has no effect.
Name
2.5V_Error
VCCP_Error
3.3V_Error
5V_Error
Zone 1 Limit
Exceeded
Zone 2 Limit
Exceeded
Zone 3 Limit
Exceeded
Error in Status
Register 2
Read/
Write
R
Register
Name
Interrupt Status 1
R/W
R
R
R
R
R
R
R
R
Default
0
0
0
0
0
0
0
0
Bit 7
(MSB)
ERR
Description
The LM96000 automatically sets this bit to 1 when the 2.5V input voltage is less
than or equal to the limit set in the 2.5V Low Limit register or greater than the limit
set in the 2.5V High Limit register.
The LM96000 automatically sets this bit to 1 when the VCCP input voltage is less
than or equal to the limit set in the VCCP Low Limit register or greater than the limit
set in the VCCP High Limit register.
The LM96000 automatically sets this bit to 1 when the 3.3V input voltage is less
than or equal to the limit set in the 3.3V Low Limit register or greater than the limit
set in the 3.3V High Limit register.
The LM96000 automatically sets this bit to 1 when the 5V input voltage is less than
or equal to the limit set in the 5V Low Limit register or greater than the limit set in
the 5V High Limit register.
The LM96000 automatically sets this bit to 1 when the temperature input measured
by the Remote1− and Remote1+ inputs is less than or equal to the limit set in the
Processor (Zone1) Low Temp register or more than the limit set in the Processor
(Zone1) High Temp register. This bit will be set when a diode fault is detected.
The LM96000 automatically sets this bit to 1 when the temperature input measured
by the internal temperature sensor is less than or equal to the limit set in the Internal
(Zone2) Low Temp register or greater than the limit set in the Internal (Zone2) High
Temp register.
The LM96000 automatically sets this bit to 1 when the temperature input measured
by the Remote2− and Remote2+ inputs is less than or equal to the limit set in the
Internal (Zone2) Low Temp register or greater than the limit set in the Remote
(Zone3) High Temp register. This bit will be set when a diode fault is detected.
If there is a set bit in Status Register 2, this bit will be set to 1.
Bit 6
ZN3
16
Bit 5
ZN2
Bit 4
ZN1
Bit 3
5V
Bit 2
3.3V
Bit 1
VCCP
Bit 0
(LSB)
2.5V
Default
Value
00h