SI3220-GQ Silicon Laboratories Inc, SI3220-GQ Datasheet - Page 51
![IC SLIC/CODEC DUAL-CH 64TQFP](/photos/16/12/161288/tqfp-64_sml.jpg)
SI3220-GQ
Manufacturer Part Number
SI3220-GQ
Description
IC SLIC/CODEC DUAL-CH 64TQFP
Manufacturer
Silicon Laboratories Inc
Series
ProSLIC®r
Specifications of SI3220-GQ
Function
Subscriber Line Interface Concept (SLIC), CODEC
Interface
GCI, PCM, SPI
Number Of Circuits
2
Voltage - Supply
3.3V, 5V
Current - Supply
65mA
Power (watts)
941mW
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
*
Includes
Battery Switching, BORSCHT Functions, DTMF Generation and Decoding, FSK Tone Generation, Modem and Fax Tone Detection
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SI3220-GQ
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
Part Number:
SI3220-GQ
Manufacturer:
SILICONLABS/芯科
Quantity:
20 000
Company:
Part Number:
SI3220-GQR
Manufacturer:
SILICON
Quantity:
15 000
Ringtrip Timeout Counter
The Dual ProSLIC incorporates a ringtrip timeout
counter, RTCOUNT, that will monitor the status of the
ringing control. When exiting ringing, the Dual ProSLIC
will allow the ringtrip timeout counter a sufficient amount
of time (RTCOUNT x 1.25 ms/LSB) for the mode to
switch to On-hook Transmission or Active. The mode
that is being exited to is governed by whether the
command to exit ringing is a ringing active timer
expiration (on-hook transmission) or ringtrip/manual
ILOOP
Processor
Signal
Input
LFS
Figure 27. Ring Trip Detect Processing Circuitry
Full Wave
Rectifier
Digital
LPF
RTPER
Digital
LPF
AC Ring Trip
DC Ring Trip
Threshold
Threshold
RTDCTH
RTACTH
Rev. 1.0
_
+
+
_
mode change (active mode). The ringtrip timeout
counter ensures ringing is exited within its time setting
(RTCOUNT x 1.25 ms/LSB, typically 200 ms).
Ringtrip Debounce Interval
The ac and dc ring trip debounce intervals can be
calculated based on the following equations:
RTACDB = t
RTDCDB = t
Debounce
Filter_AC
RTACDB
debounce
debounce
Debounce
Filter_DC
RTDCDB
(1600/RTPER)
(1600/RTPER)
Si3220/Si3225
Interrupt
RTRIPE
Logic
RTP
RTRIPS
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