SI3215MPPQ1-EVB Silicon Laboratories Inc, SI3215MPPQ1-EVB Datasheet - Page 36

• Manufacturer Part Number: SI3215MPPQ1-EVB
• Description: BOARD EVAL W/SI3201 INTERFACE
• Manufacturer: Silicon Laboratories Inc
• Series: ProSLIC®r

Specifications of SI3215MPPQ1-EVB

• Main Purpose: Interface, Analog Front End (AFE)
• Utilized Ic / Part: Si3215
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Si3215
When
LF[2:0] = 100 (direct Register 64), the ProSLIC will go
into the ringing state and start the first ring. At the
expiration of RAT, the ProSLIC will turn off the ringing
waveform and go to the on-hook transmission state. At
the expiration of RIT, ringing will again be initiated. This
process will continue as long as the two timers are
enabled and the Linefeed Control register is set to the
ringing state.
2.5.2. 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, and RNGY are as
follows:
where
and f = desired ringing frequency in hertz.
36
Note: The ProSLIC uses registers that are both directly and indirectly mapped. A direct register is one that is mapped
Common Mode Bias Adjust During Ringing
Linefeed Control (Initiates Ringing State)
Ringing Oscillator Inactive Timer
Ringing Oscillator Active Timer
directly. An indirect register is one that is accessed using the indirect access registers (direct registers 28 through 31).
Ringing Voltage Offset Enable
Ringing Inactive Timer Enable
Ringing Active Timer Enable
the
Ringing Oscillator Enable
Ringing dc voltage offset
High Battery Voltage
Ringing initial phase
Ringing Waveform
Ringing frequency
Ringing amplitude
ringing
Parameter
coeff
RCO
state
=
=
cos
coeff
⎛
⎝
---------------------- -
1000 Hz
is
×
Table 28. Registers for Ringing Generation
2πf
(
2
invoked
15
)
⎞
⎠
by
Ringing State = 100b
sinewave and period
Range/ Description
Sets initial phase for
writing
Sine/Trapezoid
0 to 8 seconds
0 to 8 seconds
15 to 100 Hz
0 to –94.5 V
0 to 94.5 V
0 to 94.5 V
0 to 22.5 V
Rev. 0.92
trapezoid
Enabled/
Enabled/
Enabled/
Enabled/
Disabled
Disabled
Disabled
Disabled
for
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
the equations are as follows:
In addition, the user must select the sinusoidal ringing
waveform by writing TSWS = 0 (direct Register 34,
bit 0).
RNGX
RNGX
RCO
=
1
-- -
4
×
=
coeff
RNGX[15:0]
RNGY[15:0]
=
VBATH[5:0]
ROFF[15:0]
VCMR[3:0]
RCO[15:0]
RAT[15:0]
1
-- -
4
Register
RIT[15:0]
1 coeff
----------------------- -
1
0.99211
LF[2:0]
TSWS
×
RTAE
RTIE
+
RVO
ROE
–
Bits
coeff
=
0.00789
-------------------- -
1.99211
cos
RNGY
RNGY
×
×
⎛
⎝
---------------------- -
1000 Hz
(
2
2π 20
2
15
15
×
Direct Registers 48 and 49
Direct Registers 50 and 51
×
2
)
×
15
=
=
PK
Desired V
----------------------------------------------------------------------- -
=
Indirect Register 27
0
×
0
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
⎞
⎠
32509
, 20 Hz ringing signal,
70
----- -
96
=
0.99211
=
Location
376
=
PK
96 V
7EFDh
(
=
0 to 94.5 V
0177h
)