Si3226/7 and Si3208/9
Dual ProSLIC® with DC-DC Controller
- Software-programmable parameters:
Description
®
- Ringing frequency, amplitude, cadence, and wave-
shape
The Dual ProSLIC is a family of low-voltage CMOS
devices that integrate both SLIC and CODEC
functionality into a single IC. In combination with a
linefeed IC (LFIC), they provide a complete two-
channel analog telephone interface in accordance
with all relevant LSSGR, ITU, and ETSI
specifications. The Dual ProSLIC devices (Si3226/7)
operate from a single 3.3 V supply and interface to
standard PCM/SPI or GCI bus digital interfaces. The
LFICs (Si3208/9) perform all high-voltage functions
and operate from a 3.3 V supply as well as high-
voltage battery supplies. The Si3208 is rated for –
110 V, and the Si3209 is rated for –135 V. The Dual
ProSLIC devices are available in a 64-pin thin quad
flat package (TQFP), and the LFICs are available in a
40-pin, quad flat no-lead package (QFN).
- Two-wire ac impedance
- Transhybrid balance
- DC current loop feed (10–45 mA)
- Loop closure and ring trip thresholds
- Ground key detect threshold
- Loop or ground start operation
- Smooth polarity reversal
- DTMF generator/decoder
- A-Law/µ-Law companding,
linear PCM
- PCM and SPI bus digital interfaces with program-
mable interrupts
- GCI/IOM-2 mode support
- 3.3 V operation
Features
- GR-909 loop diagnostics
- Audio diagnostics with loopback
- Pb-free/RoHS-compliant packaging
- Performs all BORSCHT functions
- Ideal for short- or long-loop applications
- Internal balanced or unbalanced ringing
- Low power consumption
Applications
- Integrated dc-dc controller
- Customer Premises Equipment (CPE)
- Optical Network Terminals (ONT)
- Private Branch Exchange (PBX)
- Cable EMTAs, ATAs, VoIP Gateways
- Wideband CODEC (Si3227)
- Low-power sleep mode
- On-hook transmission
Si3226/7
Si32068/9
SLIC
Linefeed
Control
CODEC
PCM/
GCI
Interface
FSYNC
DRX
DTMF &
Tone Gen
TIP
ADC
DTX
Channel 1
RING
Caller ID
Linefeed
Monitor
CS
SDI
DAC
SPI
Control
Interface
Ringing
Generator
SDO
SCLK
INT
SLIC
Linefeed
Control
CODEC
DSP
TIP
Line Diagnostics
ADC
RST
Channel 2
RING
Linefeed
Monitor
DAC
PCLK
DC-DC Controllers
DC-DC Contro ler
PLL
VBAT
DC-DC BOM
VDC
ProSLIC
Copyright © 2007 by Silicon Laboratories
6.1.07