SI3019-F-FT Silicon Laboratories Inc, SI3019-F-FT Datasheet - Page 34

• Manufacturer Part Number: SI3019-F-FT
• Description: IC VOICE DAA GCI/PCM/SPI 16TSSOP
• Manufacturer: Silicon Laboratories Inc
• Type: Chipsetr

Specifications of SI3019-F-FT

• Package / Case: 16-TSSOP
• Function: Data Access Arrangement (DAA)
• Interface: GCI, PCM, SPI
• Number Of Circuits: 1
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 8.5mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Includes: Line Voltage Monitor, Loop Current Monitor, Overload Detection, Parallel Handset Detection, Polarity Reversal Detection, TIP and
• Product: Modem Chip
• Supply Voltage (min): 3 V
• Supply Current: 8.5 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Si3050
requires two notches, one at 12 kHz and one at 16 kHz.
Because these components are expensive and few
countries utilize billing tones, this filter is typically placed
in an external dongle or added as a population option.
Figure 23 shows a billing tone filter example. Table 18
gives the component values.
L1 must carry the entire loop current. The series
resistance of the inductors is important to achieve a
narrow and deep notch. This design has more than
25 dB of attenuation at both 12 kHz and 16 kHz.
The billing tone filter affects the DAA’s ac termination
and return loss. The global compromise complex ac
termination as selected by ACIM[3:0] = 1111 passes
global return loss specifications with and without the
billing tone filter by at least 3 dB. This ac termination is
optimized
cancellation and has greater than 4 dB of margin with or
without the dongle for South Africa, Australia, TBR21,
Germany,
specifications.
5.24. On-Hook Line Monitor
The on-hook line monitor mode allows the Si3050 to
receive line activity when in an on-hook state. This
34
Table 18. Component Values—Optional Billing
Component
From Line
C1,C2
RING
C3
L1
L2
TIP
Figure 23. Billing Tone Filter
for
and
frequency
3.3 mH, >120 mA, <10 Ω , ±10%
10 mH, >40 mA, <10 Ω , ±10%
Tone Filters
Switzerland
0.027 µF, 50 V, ±10%
0.01 µF, 250 V, ±10%
C1
C2
L1
response
Value
C3
L2
country-specific
DAA
To
and
hybrid
Rev. 1.2
mode is typically used to detect caller ID data (see
“5.25.Caller ID”) and is enabled by setting the ONHM bit
(Register 5, bit 3). Caller ID data can be gained up or
attenuated using the receive gain control bits in
Registers 39 and 41.
5.25. Caller ID
The Si3050 can pass caller ID data from the phone line
to a caller ID decoder connected to the DAA.
5.25.1. Type I Caller ID
Type I Caller ID sends the CID data when the phone is
on-hook.
In systems where the caller ID data is passed on the
phone line between the first and second rings, utilize the
following method to capture the caller ID data:
1. After identifying a ring signal using one of the
2. Assert the ONHM bit (Register 5, bit 3) to enable
3. Clear the ONHM bit after the caller ID data is
In systems where the caller ID data is preceded by a
line polarity (battery) reversal, use the following method
to capture the caller ID data:
1. Enable full wave rectified ring detection (RFWE,
2. Monitor the RDTP and RDTN register bits (or the
3. Assert the ONHM bit (Register 5, bit 3) to enable
4. Clear the ONHM bit after the caller ID data is
methods described in "5.18. Ring Detection" on
page 31, determine when the first ring is complete.
caller ID data detection. The caller ID data is passed
across the RNG 1/2 pins and presented to the host
via the DTX pin.
received.
Register 18, bit 1).
POLI bit with the Si3019 line-side) to identify if a
polarity reversal or a ring signal has occurred. A
polarity reversal trips either the RDTP or RDTN ring
detection bits, therefore the full-wave ring detector
must be used to distinguish a polarity reversal from a
ring. The lowest specified ring frequency is 15 Hz;
so, if a battery reversal occurs, the DSP should wait
a minimum of 40 ms to verify that the event is a
battery reversal and not a ring signal. This time is
greater than half the period of the longest ring signal.
If another edge is detected during this 40 ms pause,
this event is characterized as a ring signal and not a
battery reversal.
caller ID data detection. The caller ID data is passed
across the RNG 1/2 pins and presented to the host
via the DTX pin.
received.