Si3215
P
R O
SLIC
®
P
R O G R A M M A B L E
CMOS SLIC/C
O D E C
R
I N G I N G
/ B
A T T E R Y
V
O L TA G E
G
E N E R A T I O N
Features
Performs all BORSCHT functions
Software-programmable internal balanced
ringing up to 90 VPK
(5 REN up to 4 kft, 3 REN up to 8 kft)
Integrated battery supply with dynamic
voltage output
On-chip dc-dc converter continuously
minimizes power in all operating modes
Entire solution can be powered from a
single 3.3 V or 5 V supply
3.3 to 35 V dc input range
Dynamic 0 to –94.5 V output
Low-cost inductor and high-efficiency
transformer versions supported
Software-programmable linefeed
parameters:
Ringing frequency, amplitude, cadence,
and waveshape
2-wire ac impedance and hybrid
Constant current feed (20 to 41 mA)
Loop closure and ring trip thresholds and
filtering
Software-programmable signal
generation and audio processing:
Phase-continuous FSK (caller ID)
generation
Dual audio tone generators
Smooth and abrupt polarity reversal
µ-Law/A-Law
and 16-bit linear PCM
audio
Extensive test and diagnostic features
Multiple voice loopback test modes
Real time dc linefeed measurement
GR-909 line test capabilities
SPI and PCM bus digital interfaces
Extensive programmable interrupts
100% software-configurable global
solution
Ideal for customer premise equipment
applications
Lead-free and RoHS-compliant packages
available
WITH
Ordering Information
See page 111.
Pin Assignments
Si3215
QFN
DRX
PCLK
INT
CS
SCLK
SDI
SDO
Applications
Voice-over-broadband systems:
DSL, cable, wireless
PBX/IP-PBX/key telephone systems
Terminal adapters:
ISDN, Ethernet, USB
Description
The ProSLIC is a low-voltage CMOS device that provides a complete analog
telephone interface ideal for customer premise equipment (CPE) applications.
The ProSLIC integrates subscriber line interface circuit (SLIC), codec, and battery
generation functionality into a single CMOS integrated circuit. The integrated
battery supply continuously adapts its output voltage to minimize power and
enables the entire solution to be powered from a single 3.3 V (Si3215M only) or
5 V supply. The ProSLIC controls the phone line through Silicon Labs’ Si3201
Linefeed Interface Chip or discrete component line feed. Si3215 features include
software-configurable 5 REN internal ringing up to 90 V
PK
, DTMF generation, and
a comprehensive set of telephony signaling capabilities including expanded
support of Japan and China country requirements. The ProSLIC is packaged in a
38-pin QFN and TSSOP, and the Si3201 is packaged in a thermally-enhanced 16-
pin SOIC.
DTX
FSYNC
RESET
SDCH
SDCL
V
DDA1
IREF
CAPP
QGND
CAPM
STIPDC
SRINGDC
1 38 37 36 35 34 33 32 31
30
2
3
4
5
6
7
8
9
10
11
29
28
27
26
25
24
23
22
21
12 13 14 15 16 17 18 19 20
SDITHRU
DCDRV
DCFF
TEST
GNDD
VDDD
ITIPN
ITIPP
V
DDA2
IRINGP
IRINGN
IGMP
U.S. Patent #6,567,521
U.S. Patent #6,812,744
Other patents pending
Functional Block Diagram
INT
CS
SCLK
SDO
SDI
DTX
RESET
Si3215
Line
Status
Control
Interface
Compression
Gain/
Attenuation/
Filter
Tone
Generators
Gain/
Attenuation/
Filter
D/A
A/D
Line
Feed
Control
TIP
Prog.
Hybrid
Linefeed
Interface
RING
Z
S
DRX
PCM
Interface
FSYNC
PCLK
PLL
Expansion
DC-DC Converter Controller
Discrete
Components
Rev. 0.92 8/05
Copyright © 2005 by Silicon Laboratories
STIPE
SVBAT
SRINGE
STIPAC
SRINGAC
IGMN
GNDA
Si3215
Si3215
2
Rev. 0.92
Si3215
T
A B L E
Section
OF
C
O N T E N TS
Page
1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.1. Si3210 to Si3215 Differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.2. Linefeed Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.3. Battery Voltage Generation and Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2.4. Tone Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2.5. Ringing Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
2.6. Audio Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
2.7. Two-Wire Impedance Matching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
2.8. Clock Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
2.9. Interrupt Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2.10. Serial Peripheral Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2.11. PCM Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
2.12. Companding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
3. Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
4. Indirect Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101
4.1. Oscillators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
4.2. Digital Programmable Gain/Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
4.3. SLIC Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
4.4. FSK Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
5. Pin Descriptions: Si3215 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
6. Pin Descriptions: Si3201 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
7. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
8. Package Outline: 38-Pin QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
9. Package Outline: 38-Pin TSSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
10. Package Outline: 16-Pin ESOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118
Rev. 0.92
3
Si3215
1. Electrical Specifications
Table 1. Absolute Maximum Ratings and Thermal Information
1
Parameter
DC Supply Voltage
Input Current, Digital Input Pins
Digital Input Voltage
Operating Temperature Range
2
Storage Temperature Range
TSSOP-38 Thermal Resistance, Typical
QFN-38 Thermal Resistance, Typical
Continuous Power Dissipation
2
Si3201
DC Supply Voltage
Battery Supply Voltage
Input Voltage: TIP, RING, SRINGE, STIPE pins
Input Voltage: ITIPP, ITIPN, IRINGP, IRINGN pins
Operating Temperature Range
2
Storage Temperature Range
SOIC-16 Thermal Resistance, Typical
3
Continuous Power Dissipation
2
Symbol
Si3215
V
DDD
, V
DDA1
, V
DDA2
I
IN
V
IND
T
A
T
STG
θ
JA
θ
JA
P
D
V
DD
V
BAT
V
INHV
V
IN
T
A
T
STG
θ
JA
P
D
Value
–0.5 to 6.0
±10
–0.3 to (V
DDD
+ 0.3)
–40 to 100
–40 to 150
70
35
0.7
–0.5 to 6.0
–104
(V
BAT
– 0.3) to (V
DD
+ 0.3)
–0.3 to (V
DD
+ 0.3)
–40 to 100
–40 to 150
55
0.8 at 70
o
C
0.6 at 85
o
C
Unit
V
mA
V
°C
°C
°C/W
°C/W
W
V
V
V
V
°C
°C
°C/W
W
Notes:
1.
Permanent device damage may occur if these absolute maximum ratings are exceeded. Functional operation should
be restricted to the conditions as specified in the operational sections of this data sheet. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
2.
Operation above 125
o
C junction temperature may degrade device reliability.
3.
Thermal resistance assumes a multi-layer PCB with the exposed pad soldered to a topside PCB pad.
4
Rev. 0.92
Si3215
Table 2. Recommended Operating Conditions
Parameter
Ambient Temperature
Ambient Temperature
Si3215 Supply Voltage
Si3201 Supply Voltage
Si3201 Battery Voltage
Symbol
T
A
T
A
V
DDD
,V
DDA1
,
V
DDA2
V
DD
V
BAT
V
BATH
= V
BAT
Test Condition
K-grade
B-grade
Min*
0
–40
3.13
3.13
–96
Typ
25
25
3.3/5.0
3.3/5.0
—
Max*
70
85
5.25
5.25
–10
Unit
o
C
o
C
V
V
V
*Note:
All minimum and maximum specifications are guaranteed and apply across the recommended operating conditions.
Typical values apply at nominal supply voltages and an operating temperature of 25
o
C unless otherwise stated.
Product specifications are only guaranteed when the typical application circuit (including component tolerances) is
used.
Table 3. AC Characteristics
(V
DDA
, V
DDD
= 3.13 to 5.25 V, T
A
= 0 to 70 °C for K-Grade, –40 to 85 °C for B-Grade)
Parameter
Overload Level
Single Frequency Distortion
1
Test Condition
TX/RX Performance
THD = 1.5%
2-wire – PCM or
PCM – 2-wire:
200 Hz–3.4 kHz
200 Hz to 3.4 kHz
D/A or A/D 8-bit
Active off-hook, and OHT,
any ZAC
0 dBm0, Active off-hook,
and OHT, any Zac
2-wire to PCM, 1014 Hz
PCM to 2-wire, 1014 Hz
Min
2.5
—
Typ
—
—
Max
—
–45
Unit
V
PK
dB
Signal-to-(Noise + Distortion) Ratio
2
Figure 1
—
—
Audio Tone Generator
Signal-to-Distortion Ratio
2
Intermodulation Distortion
Gain Accuracy
2
Gain Accuracy Over Frequency
Group Delay Over Frequency
Gain Tracking
3
45
—
–0.5
–0.5
Figure 3,4
Figure 5,6
—
—
0
0
—
—
—
–45
0.5
0.5
—
—
dB
dB
dB
dB
1014 Hz sine wave, refer-
ence level –10 dBm
signal level:
3 dB to –37 dB
–37 dB to –50 dB
–50 dB to –60 dB
–0.25
–0.5
–1.0
—
–0.017
–0.25
–0.1
—
—
—
1100
—
—
—
0.25
0.5
1.0
—
0.017
0.25
0.1
dB
dB
dB
µs
dB
dB
dB
Round-Trip Group Delay
Gain Step Accuracy
Gain Variation with Temperature
Gain Variation with Supply
at 1000 Hz
–6 dB to 6 dB
All gain settings
V
DDA
= V
DDA
= 3.3/5 V ±5%
Rev. 0.92
5
