RE46C180
DS22275A-page 26
?2011 Microchip Technology Inc.
The minimum pulse-width for FEED is 10 祍, while the
minimum pulse-width for TEST is 100 祍.
For example, for the following options, the sequence
would be:
bit 11
LBHshEn: Low Battery Hush Enable Bit 
1 =  Enable
0 =  Disable
bit 10
AMHCEn: Alarm Memory PTT Indicator Horn Chirp Enable Bit 
1 =  Enable
0 =  Disable
bit 9
AMLEDEn: Alarm Memory PTT Indicator LED Flashing Enable Bit
1 =  Enable
0 =  Disable
bit 8
AMTO2: MSB 
bit 7
AMTO1: LSB 
00 = 24 Hours Timeout
01 =  48 Hours Timeout
10 =  0 Hour Timeout
11 =  Never Timeout
bit 6
AMEn: Alarm Memory Enable Bit 
1 =  Enable
0 =  Disable
bit 5
ShrTO: HUSH Timer Time Out Select Bit
1 =  80 seconds
0 =  9 minutes
bit 4
SmrtH: Smart HUSH Bit 
1 =  Enable (Hush is canceled by either high smoke, or remote smoke)
0 =  Disable (Hush is never canceled until timeout)
bit 3
HIAO: HUSH-in-Alarm -Only Bit 
1 =  Enable (Hush is activated upon release of PTT during local smoke only)
0 =  Disable (Hush is activated upon release of PTT at anytime)
bit 2
HushEnB: HUSH Enable Bit 
1 =  Enable (Hush is disabled)
0 =  Disable (Hush is enabled)
bit 1
TSEL: Tone Select Bit
1 =  Continuous Tone Pattern
0 =  Temporal Tone Pattern
REGISTER 4-2:
USER FEATURE CONFIGURATION REGISTER (CONTINUED)
Data

X
1
0
1
1
1
1
0
1
Bit
    18   17   16   15   14   13   12   11   10
Data

0
0
0
1
0
0
1
0
0
Bit

9
8
7
6
5
4
3
2
1
Low battery Trip Point
=   6.9V
End of Life Enable
=   Yes
CO Enable
=   Yes
Auto Alarm Locate Disable
=   Yes
Horn Synchronization Enable
=   Yes
Low Battery Hush Enable
=   No
Alarm Memory PTT Indicator Horn
Chirp Enable
=   Yes
Alarm Memory PTT Indicator LED
Flashing Enable
=   No
Alarm memory LED indicator time
out
=   24 hours
Alarm Memory Enable
=   Yes
HUSH time out
=   9 minutes
Smart HUSH
=   No
Hush in alarm only
=   Yes
Hush Enable
=   Yes
Tone Select
=   Temporal
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