SI3201-GSR Silicon Laboratories Inc, SI3201-GSR Datasheet - Page 40
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SI3201-GSR
Manufacturer Part Number
SI3201-GSR
Description
SLIC 3.3V/3.3V/3.3V/5V/5V/5V
Manufacturer
Silicon Laboratories Inc
Datasheet
1.SI3201-GSR.pdf
(122 pages)
Specifications of SI3201-GSR
Lead Free Status / Rohs Status
Compliant
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Si3216
2.4.2. Sinusoidal Ringing
To configure the ProSLIC for sinusoidal ringing, the
frequency and amplitude are initialized by writing to the
following indirect registers: RCO, RNGX, and RNGY.
The equations for RCO, RNGX, RNGY are as follows:
where
and f = desired ringing frequency in hertz.
In selecting a ringing amplitude, the peak TIP-to-RING
ringing voltage must be greater than the selected on-
hook line voltage setting (VOC, direct Register 72). For
example, to generate a 70 V
40
Note: The ProSLIC uses registers that are both directly and indirectly mapped. A “direct” register is one that is mapped
RNGX
Common Mode Bias Adjust During Ringing
Linefeed Control (Initiates Ringing State)
Ringing Oscillator Inactive Timer
Ringing Oscillator Active Timer
Ringing Voltage Offset Enable
Ringing Inactive Timer Enable
directly. An “indirect” register is one that is accessed using the indirect access registers (direct registers 28 through
31).
=
Ringing Active Timer Enable
Ringing Oscillator Enable
Ringing dc voltage offset
1
-- -
4
High Battery Voltage
Ringing initial phase
Ringing Waveform
Ringing frequency
Ringing amplitude
----------------------- -
1
1 coeff
–
+
coeff
Parameter
RCO
coeff
RNGY
=
=
2
cos
coeff
15
PK
---------------------- -
1000 Hz
=
Desired V
----------------------------------------------------------------------- -
20 Hz ringing signal, the
Table 29. Registers for Ringing Generation
2f
0
2
15
PK
96 V
0 to 94.5 V
Ringing State = 100
sinewave and period
Range/ Description
Sets initial phase for
Sine/Trapezoid
15 to 100 Hz
for trapezoid
0 to –94.5 V
0 to 94.5 V
0 to 94.5 V
0 to 22.5 V
Rev. 1.0
Enabled/
Disabled
Enabled/
Disabled
Enabled/
Disabled
Enabled/
Disabled
0 to 8 s
0 to 8 s
equations are as follows:
In addition, the user must select the sinusoidal ringing
waveform by writing TSWS = 0 (direct Register 34,
bit 0).
2.4.3. Trapezoidal Ringing
In addition to the sinusoidal ringing waveform, the
ProSLIC
illustrates a trapezoidal ringing waveform with offset
V
ROFF
RNGX
.
RCO
b
supports
=
coeff
=
1
-- -
4
RNGX[15:0]
RNGY[15:0]
VBATH[5:0]
ROFF[15:0]
VCMR[3:0]
0.99211
RCO[15:0]
RAT[15:0]
RIT[15:0]
Register
LF[2:0]
TSWS
RTAE
RTIE
=
RVO
ROE
0.00789
-------------------- -
1.99211
Bits
cos
RNGY
trapezoidal
---------------------- -
1000 Hz
2 20
2
15
2
15
=
Direct Registers 48 and
Direct Registers 50 and
=
0
Indirect Register 27
32509
Indirect Register 6
Indirect Register 7
Indirect Register 8
Indirect Register 9
Direct Register 34
Direct Register 34
Direct Register 34
Direct Register 34
Direct Register 34
Direct Register 64
Direct Register 74
70
----- -
96
=
0.99211
ringing.
=
Location
376
=
49
51
7EFDh
=
0177h
Figure 22
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