SI3216-C-FM Silicon Laboratories Inc, SI3216-C-FM Datasheet - Page 27

• Manufacturer Part Number: SI3216-C-FM
• Description: IC SLIC/CODEC 1CH 38QFN
• Manufacturer: Silicon Laboratories Inc
• Series: ProSLIC®r

Specifications of SI3216-C-FM

• Package / Case: *
• Function: Subscriber Line Interface Concept (SLIC), CODEC
• Interface: PCM, SPI
• Number Of Circuits: 1
• Voltage - Supply: 3.13 V ~ 5.25 V
• Current - Supply: 88mA
• Power (watts): 700mW
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Includes: Audio Tone Generation, BORSCHT Functions, FSK Generation, Ringing and Battery Voltage Generation
• Product: SLIC
• Supply Voltage (min): 3.13 V
• Supply Current: 88 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Number Of Channels: 1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2. Functional Description
The ProSLIC is a single, low-voltage CMOS device that
provides all SLIC, codec, DTMF detection, and signal
generation functions needed for a complete analog
telephone interface. The ProSLIC performs all battery,
overvoltage, ringing, supervision, codec, hybrid, and
test (BORSCHT) functions. The Si3216 supports
wideband (50 Hz–7 kHz) and narrowband (200 Hz–
3.4 kHz) audio codec modes to provide an expanded
audio band at a 16 kHz sample rate for enhanced audio
quality
compatibility. The Si3216 is ideal for Customer Premise
Equipment (CPE) where enhanced audio quality is
required.
Unlike most monolithic SLICs, the ProSLIC does not
require
supplies. Instead, it generates all necessary battery
voltages from a positive dc supply using its own dc-dc
converter controller. Two fully-programmable tone
generators can produce DTMF tones, phase continuous
FSK (caller ID) signaling, and call progress tones. Pulse
metering signal generation is also integrated. The
Si3201 linefeed interface IC performs all high-voltage
functions. As an option, the Si3201 can be replaced with
low-cost discrete components.
The linefeed provides programmable on-hook voltage,
programmable off-hook loop current, reverse battery
operation, loop or ground start operation, and on-hook
transmission ringing voltage. Loop current and voltage
are continuously monitored using an integrated A/D
converter. Balanced 5 REN ringing with or without a
programmable dc offset is integrated. The available
offset, frequency, waveshape, and cadence options are
designed to ring the widest variety of terminal devices
and to reduce external controller requirements.
A complete audio transmit and receive path is
integrated, including ac impedance and hybrid gain.
These features are software-programmable, allowing
for
requirements. Digital voice data transfer occurs over a
standard PCM bus. Control data is transferred using a
standard SPI. The device is available in a 38-pin QFN or
TSSOP.
2.1. Linefeed Interface
The ProSLIC’s linefeed interface offers a rich set of
features and programmable flexibility to meet the
broadest application requirements. The dc linefeed
characteristics are software programmable; key current,
voltage, and power measurements are acquired in real
time and provided in software registers.
a
single
as
externally-supplied,
well
hardware
as
standard
design
high-voltage
telephony
to
meet
battery
global
audio
Rev. 1.0
2.1.1. DC Feed Characteristics
The ProSLIC has programmable constant voltage and
constant current zones as depicted in Figure 16. Open
circuit TIP-to-RING voltage (V
voltage zone and is programmable from 0 V to 94.5 V in
1.5 V steps. The loop current limit (I
constant current zone and is programmable from 20 mA
to 41 mA in 3 mA steps. The ProSLIC has an inherent
dc output resistance (R
The TIP-to-RING voltage (V
a programmable voltage (V
headroom to the positive-most terminal (TIP in forward
polarity states and RING in reverse polarity states) for
carrying audio signals. Table 21 summarizes the
parameters to be initialized before entering an Active
state.
Parameter
*Note: The ProSLIC uses registers that are both directly
V
V
V
I
Figure 16. Simplified DC Current/Voltage
LIM
(TIP-RING )
OC
CM
Table 21. Programmable Ranges of DC
and indirectly mapped. A “direct” register is one that
is mapped directly.
V
Programmable
O C
(V)
20 to 41 mA
Linefeed Characteristics
0 to 94.5 V
0 to 94.5 V
Linefeed Characteristic
Range
R
Constant
Voltage
O
O
Zone
=160
) of 160  .
Default
20 mA
Value
OC
48 V
3 V

CM
) is offset from ground by
OC
I
LIM
) to provide voltage
) defines the constant
Constant Current
VOC[5:0]
VCM[5:0]
Register
ILIM[2:0]
Bits
LIM
Si3216
I
LO O P
Zone
) defines the
(m A)
Register 71
Register 72
Register 73
Location*
Direct
Direct
Direct
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