ASC7512 ETC2 [List of Unclassifed Manufacturers], ASC7512 Datasheet - Page 16

• Manufacturer Part Number: ASC7512
• Description: DIGITAL TEMPERATURE SENSOR WITH INTEGRATED FAN CONTROL
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

Register 41h: Interrupt Status Register 1
The Interrupt Status Register 1 bits will be automatically set, by the aSC7512, whenever a fault condition is detected. A fault
condition is detected whenever a measured value is outside the window set by its limit registers. ZN1 bit will be set when a
diode fault condition, such as an open or short, is detected. More than one fault may be indicated in the interrupt register
when read. The 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 aSC7512 after it is read by software, if the fault condition 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.
Register 42h: Interrupt Status Register 2
The Interrupt Status Register 2 bits will be automatically set, by the aSC7512, whenever a fault condition is detected.
Interrupt Status Register 2 identifies faults caused by temperature sensor error, fan speed dropping below minimum set by
the tachometer minimum register. Interrupt Status Register 2 will hold a set bit until the event is read by software. The
contents of this register will be cleared (set to 0) automatically by the aSC7512 after it is read by software, if fault condition
no longer exists. Once set, the Interrupt Status Register 2 bits will remain set until a read event occurs, even if the fault no
longer exists. This register is read-only – a write to this register has no effect.
© Andigilog, Inc. 2006
Register
Address
Register
Address
41h
42h
1:0
3:0
Bit
Bit
2
3
4
5
6
7
4
5
6
7
Read/
Read/
Write
Write
Error in Status
R
RESERVED
Zone 1 Limit
Zone 2 Limit
R
Exceeded
Exceeded
Register 2
ROPEN
RHIGH
RLOW
LHIGH
Name
LLOW
Name
BUSY
RES
RES
Interrupt Status 1
Interrupt Status 2
Register Name
Register Name
R/W
R/W
R
R
R
R
R
R
R
R
R
R
R
R
Default
Default
Table 6 Interrupt Status Register 1
(MSB)
Bit 7
ERR
0
0
0
0
0
0
0
0
0
0
0
0
(MSB)
Table 5 Alert Status Register
Bit 7
RES
RESERVED
ZONE 1 (REMOTE) SENSOR OPEN-CIRCUIT
ZONE 1 (REMOTE) SENSOR ≤ LOW LIMIT
ZONE 1 (REMOTE) SENSOR > HIGH LIMIT
ZONE 2 (LOCAL) SENSOR ≤ LOW LIMIT
ZONE 2 (LOCAL) SENSOR > HIGH LIMIT
CONVERTER IN PROCESS OF CONVERSION
Bit 6
Reserved
The aSC7512 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 (Zone 1) Low Temp register or more than the limit
set in the Processor (Zone 1) High Temp register. This bit will be set when a
diode fault is detected.
The aSC7512 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 thermal (Zone2) Low Temp register or greater than the limit set in
the Internal (Zone2) High Temp register.
Reserved
If there is a set bit in Status Register 2, this bit will be set to 1.
RES
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ERR1
Bit 6
Bit 5
ZN2
- 16 -
Bit 5
RES
Bit 4
ZN1
Bit 4
RES
Bit 3
RES
Description
Description
Bit 3
RES
Bit 2
RES
Bit 2
FAN
Bit 1
RES
Bit 1
RES
August 2006 - 70A05003
aSC7512
(LSB)
Bit 0
RES
(LSB)
Bit 0
RES
Default
Default
Value
Value
00
00