- 17 -
© Andigilog, Inc. 2006
www.andigilog.com
October 2006 - 70A05007
aSC7611
Setting the Ready/Lock/Start/Override register Lock bit has no effect on these registers.
Input
Nominal
Voltage
Register Reading
at Nominal
Voltage
Maximum
Voltage
Register Reading
at Maximum
Voltage
Minimum
Voltage
Register Reading
at Minimum
Voltage
2.5V
2.5V
C0h
3.32V
FFh
0V
00h
VCCP
2.25V
C0h
3.00V
FFh
0V
00h
3.3V
3.3V
C0h
4.38V
FFh
3.0V
AFh
5V
5.0V
C0h
6.64V
FFh
0V
00h
12V
12.0V
C0h
16.00V
FFh
0V
00h
Table 3 Voltage Limits vs Register Setting
Status Registers
Register 41h: Interrupt Status Register 1
Register
Address
Read/
Write
Register Name
Bit 7
(MSB)
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
(LSB)
Default
Value
41h
R
Interrupt Status 1
ERR
ZN3
ZN2
ZN1
5V
3.3V
VCCP
2.5V
00
The Interrupt Status Register 1 bits will be automatically set, by the aSC7611, 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 aSC7611 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.
Bit
Name
R/W
Default
Description
0
2.5V Limits
Exceeded
R
0
The aSC7611 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.
1
Vccp Limits
Exceeded
R
0
The aSC7611 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.
2
3.3V Limits
Exceeded
R
0
The aSC7611 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.
3
5V Limits
Exceeded
R
0
The aSC7611 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.
4
Zone 1 Limit
Exceeded
R
0
The aSC7611 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.
5
Zone 2 Limit
Exceeded
R
0
The aSC7611 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 (Zone 2) Low Temp register or greater than the limit set in
the Internal (Zone 2) High Temp register.
6
Zone 3 Limit
Exceeded
R
0
The aSC7611 automatically sets this bit to 1 when the temperature input
measured by the second remote temperature sensor is less than or equal to
the limit set in the thermal (Zone 3) Low Temp register or greater than the limit
set in the Internal (Zone 3) High Temp register.
7
Error in Status
Register 2
R
0
If there is a set bit in Status Register 2, this bit will be set to 1.
Table 4 Interrupt Status Register 1
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