SI3232 SILABS [Silicon Laboratories], SI3232 Datasheet - Page 43

• Manufacturer Part Number: SI3232
• Description: DUAL PROGRAMMABLE CMOS SLIC WITH LINE MONITORING
• Manufacturer: SILABS [Silicon Laboratories]

Ring Trip Interrupt Pending
Ring Trip Interrupt Enable
AC Ring Trip Threshold
DC Ring Trip Threshold
Ring Trip Sample Period
Linefeed Shadow (monitor only)
Ring Trip Detect Status (monitor only)
AC Ring Trip Detect Debounce Interval
DC Ring Trip Detect Debounce Interval
Loop Current Sense (monitor only)
Notes:
Frequency
16–32 Hz
33–60 Hz
Ringing
1. All calculated values should be rounded to the nearest integer.
2. Refer to Ring Trip Debounce Interval for RTACDB and RTDCDB equations.
Parameter
DC Offset
Added?
Yes
Yes
No
No
Table 25. Register and RAM Locations for Ring Trip Detection
Table 24. Recommended Ring Trip Detection Values
2(800/f
2(800/f
800/f
800/f
RTPER
RING
RING
RING
RING
Register/RAM
)
)
Mnemonic
LINEFEED
IRQVEC2
RTDCTH
RTDCDB
LCRRPT
RTACDB
RTACTH
IRQEN2
RTPER
ILOOP
1.59 x V
1.59 x V
Preliminary Rev. 0.96
221 x RTPER
221 x RTPER
RTACTH
RING,PK
RING,PK
RTDCDB[15:0]
RTDCTH[15:0]
RTACDB[15:0]
RTACTH[15:0]
RTPER[15:0]
ILOOP[15:0]
RAM Bits
Register/
x RTPER
x RTPER
LFS[2:0]
RTRIPS
RTRIPE
RTP
0.577(RTPER x V
0.577(RTPER x V
Enabled/Disabled
Programmable
0 to 101.09 mA
See Table 24
See Table 24
See Table 24
0 to 40.96 s
0 to 40.96 s
RTDCTH
Yes/No
Range
32767
32767
N/A
N/A
1
OFF
OFF
Si3232
)
)
See Table 14
Resolution
1.25 ms
1.25 ms
RTACDB/
RTDCDB
N/A
N/A
N/A
N/A
Note 2
See
43