RE46C180
DS22275A-page 32
?2011 Microchip Technology Inc.
bit 5
ShrTO: HUSH Timer Time Out Select Bit
1 =  80 secondse
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 4-3:
SERIAL READ/WRITE REGISTER (CONTINUED)
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