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© Andigilog, Inc. 2006
www.andigilog.com
October 2006 - 70A05007
aSC7611
Register Value
Current PWM %
Binary
Hex
0%
0000
0000
00
~25%
0100
0000
40
~50% (Default)
1000
0000
80
~75%
1100
0000
C0
100%
1111
1111
FF
Table 10 Current PWM Duty Cycle Setting
Register 4E-53h: Thermal Zone Temperature Limit Registers
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
4Eh
R/W
Zone 1 Low
Temperature
7
6
5
4
3
2
1
0
81
4Fh
R/W
Zone 1 High
Temperature
7
6
5
4
3
2
1
0
7F
50h
R/W
Zone 2 Low
Temperature
7
6
5
4
3
2
1
0
81
51h
R/W
Zone 2 High
Temperature
7
6
5
4
3
2
1
0
7F
52h
R/W
Zone 3 Low
Temperature
7
6
5
4
3
2
1
0
81
53h
R/W
Zone 3 High
Temperature
7
6
5
4
3
2
1
0
7F
If an external temperature input or the internal temperature sensor either exceeds the value set in the corresponding high
limit register or falls below the value set in the corresponding low limit register, the corresponding bit will be set automatically
by the aSC7611 in the Interrupt Status Register 1 (41h). For example, if the temperature read from the Remote - and
Remote + inputs exceeds the Zone 1 High Temp register limit setting, Interrupt Status Register 1 ZN1 bit will be set. The
temperature limits in these registers are represented as 8 bit 2’s complement, signed numbers in Celsius, as shown below in
Table 11. Setting the Ready/Lock/Start/Override register Lock bit has no effect on these registers.
Temperature
Temperature Limit
(2’s Complement)
>127°C
0111
1111
+127°C (Default High)
0111
1111
+125°C
0111
1101
+90°C
0101
1010
+50°C
0011
0010
+25°C
0001
1001
0°C
0000
0000
-50°C
1100
1110
-127°C (Default Low)
1000
0001
Table 11 Zone Temperature High- and Low-Limit Registers - 8-Bit Two’s Complement
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