SI3210M-FTR Silicon Laboratories Inc, SI3210M-FTR Datasheet - Page 46
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SI3210M-FTR
Manufacturer Part Number
SI3210M-FTR
Description
Manufacturer
Silicon Laboratories Inc
Datasheet
1.SI3210M-FTR.pdf
(138 pages)
Specifications of SI3210M-FTR
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Si3210/Si3211
2.5. Pulse Metering Generation
There is an additional tone generator suitable for
generating tones above the audio frequency. This
oscillator is provided for the generation of billing tones
that are typically 12 kHz or 16 kHz. The generator
follows the same algorithm as described in "2.3. Tone
Generation" on page 39 with the exception that the
sample rate for computation is 64 kHz instead of 8 kHz.
The equations are as follows:
46
Ring Trip Interrupt Pending
Ring Trip Interrupt Enable
Ring Trip Detect Debounce Interval
Ring Trip Threshold
Ring Trip Filter Coefficient
Ring Trip Detect Status (monitor only)
Note: The ProSLIC uses registers that are both directly and indirectly mapped. A “direct” register is one that is mapped
Frequency
Ringing
16.667
Hz
20
30
40
50
60
directly. An “indirect” register is one that is accessed using the indirect access registers (direct registers 28 through
31).
PLSCO
coeff
decimal
Parameter
=
100
112
128
213
256
=
64
cos
Table 31. Associated Registers for Ring Trip Detection
Table 32. Recommended Ring Trip Values for Ringing
coeff
------------------------- -
64000 Hz
NRTP
2f
2
15
–
1
06A8
0200
0320
0380
0400
0800
hex
Rev. 1.45
decimal
34 mA
34 mA
34 mA
34 mA
34 mA
34 mA
where full scale V
The initial phase of the pulse metering signal is set to 0
internally; so, there is no register to serve this purpose.
The pulse metering generator timers and associated
pulse metering timer registers are similar to those of the
tone generators. These timers count 8 kHz sample
periods like the other tones even though the sinusoid is
generated at 64 kHz.
NRTP[12:0]
RPTP[5:0]
PLSX
RPTP
RTDI[6:0]
Register
RTIP
RTIE
RTP
=
3600
3600
3600
3600
3600
3600
1
-- - 1 coeff
4
hex
----------------------- -
1
+
–
rms
coeff
= 0.85 V
2
15.4 ms
12.3 ms
8.96 ms
decimal
7.5 ms
4.8 ms
15
Indirect Register 29
Indirect Register 36
5 ms
Direct Register 19
Direct Register 22
Direct Register 70
Direct Register 68
rms
–
1
for a matched load.
Location
------------------------------------------- -
Full Scale V
RTDI
Desired V
hex
0F
0B
09
07
05
05
rms
rms
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