SI3210DCQ1-EVB Silicon Laboratories Inc, SI3210DCQ1-EVB Datasheet - Page 24

• Manufacturer Part Number: SI3210DCQ1-EVB
• Description: DAUGHTERCARD W/SI3201 INTERFACE
• Manufacturer: Silicon Laboratories Inc
• Series: ProSLIC®r
• Type: SLIC/CODECr

Specifications of SI3210DCQ1-EVB

• Contents: Evaluation Board and CD-ROM
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: Si3210
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Si3210/Si3211
2. Functional Description
The ProSLIC
provides all the 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. Unlike most monolithic
SLICs, the Si3210 does not require externally supplied
high-voltage battery 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. DTMF decoding and pulse metering
signal generation are also integrated. The Si3201
linefeed interface IC performs all high voltage functions.
As an option, the Si3201 can also be replaced with low-
cost discrete components as shown in the typical
application circuits in Figures 12, 13, and 14.
The ProSLIC is ideal for short loop applications, such as
terminal adapters, cable telephony, PBX/key systems,
wireless local loop (WLL), and voice over IP solutions.
The device meets all relevant LSSGR and CCITT
standards.
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 DTMF decoding, ac impedance,
and
programmable, allowing for a single hardware design to
meet international 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 package.
2.1. Linefeed Interface
The ProSLIC’s linefeed interface offers a rich set of
features and programmable flexibility to meet the
broadest applications requirements. The dc linefeed
characteristics are software programmable; key current,
voltage, and power measurements are acquired in
realtime and provided in software registers.
24
hybrid
®
gain.
is a single low-voltage CMOS device that
These
features
are
software
Rev. 1.42
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 22 summarizes the
parameters to be initialized before entering an active
state.
Parameter
*Note: The ProSLIC uses registers that are both directly
Figure 16. Simplified DC Current/Voltage Linefeed
V
V
V
I
LIM
(TIP-RING )
OC
CM
Table 22. 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
Range
Characteristic
R
Constant
Voltage
O
O
Zone
=160
) of 160 Ω .
Default
20 mA
Value
OC
48 V
3 V
Ω
CM
OC
) is offset from ground by
I
LIM
) to provide voltage
) defines the constant
Constant Current
VCM[5:0]
VOC[5:0]
Register
ILIM[2:0]
Bits
LIM
I
LO O P
Zone
) defines the
(m A)
Register 71
Register 72
Register 73
Location*
Direct
Direct
Direct