SI3201-X-FS SILABS [Silicon Laboratories], SI3201-X-FS Datasheet

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SI3201-X-FS

Manufacturer Part Number
SI3201-X-FS
Description
Manufacturer
SILABS [Silicon Laboratories]
Datasheet
P
R
Features
Applications
Description
The Si3233 ProSLIC
subscriber line interface ideal for customer premise equipment (CPE) applications.
The ProSLIC integrates subscriber line interface circuit (SLIC) 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 (Si3233M only) or 5 V supply. The ProSLIC
controls the phone line through Silicon Labs’ Si3201 Linefeed IC or discrete circuitry.
Si3233 features include software-configurable 5 REN internal ringing up to 90 V
DTMF generation, and a comprehensive set of telephony signaling capabilities for
operation with only one hardware solution. The ProSLIC is packaged in a 38-pin QFN
and the Si3201 is packaged in a thermally-enhanced 16-pin SOIC.
Functional Block Diagram
Preliminary Rev. 0.5 4/06
R O
Software Programmable SLIC with
codec interface
Software programmable internal
balanced ringing up to 90 V
(5 REN up to 4 kft, 3 REN up to 8 kft)
Integrated battery supply with dynamic
voltage output
Software programmable linefeed
parameters:
Interface to Broadcom devices
I N G I N G
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
minimizes power in all operating modes
single 3.3 V or 5 V supply
and waveshape
filtering
On-chip dc-dc converter continuously
Entire solution can be powered from a
3.3 V to 35 V dc input range
Dynamic 0 V to –94.5 V output
Ringing frequency, amplitude, cadence,
2-wire ac impedance
constant current feed (20 to 41 mA)
Loop closure and ring trip thresholds and
BCM11xx residential gateway
BCM3341 VOIP processor
BCM33xx cable modem
FSYNC
SLIC
PCLK
SCLK
SDO
SDI
CS
INT
/ B
®
RESET
®
is a low-voltage CMOS device that provides a multi-functional
Tone Generators
Impedance Synth
A T T E R Y
FSK Caller ID
P
R O G R A M M A B L E
PK
DC–DC Converter Controller
Si3233
Ring Trip Detect Line
Loop Closure Detect
Ringing Generator
Linefeed Control
Linefeed Monitor
Copyright © 2006 by Silicon Laboratories
Diagnostics
V
SLIC
O L TA G E
Software programmable signal
generation and audio processing:
Extensive test and diagnostic
features
SPI control interface
Extensive programmable interrupts
100% software configurable global
solution
Lead-Free and RoHS-compliant
Voice over IP
Terminal adapters
Fixed cellular terminal
generation
Phase-continuous FSK (caller ID)
Dual audio tone generators
Smooth and abrupt polarity reversal
Realtime dc linefeed measurement
GR-909 line test capabilities
Linefeed
Interface
Battery
CMOS SLIC
G
Tip
Ring
E N E R A T I O N
PK
,
Patents pending
U.S. Patent #6,567,521
U.S. Patent #6,812,744
Other patents pending
SRINGDC
STIPDC
FSYNC
RESET
QGND
CAPM
SDCH
SDCL
CAPP
V
IREF
NC
DDA1
Ordering Information
Pin Assignments
10
11
12 13
1
2
3
4
5
6
7
8
9
W I T H
QFN Package
38
See page 95.
14
37
Si3233
15 16 17 18 19
36
35
34 33 32
31
30
29
28
27
26
25
24
23
22
21
20
SDITHRU
DCDRV
ITIPN
IRINGP
IGMP
DCFF
TEST1
GNDD
VDDD
ITIPP
V
IRINGN
DDA2
Si3233

Related parts for SI3201-X-FS

SI3201-X-FS Summary of contents

Page 1

... V (Si3233M only supply. The ProSLIC controls the phone line through Silicon Labs’ Si3201 Linefeed IC or discrete circuitry. Si3233 features include software-configurable 5 REN internal ringing DTMF generation, and a comprehensive set of telephony signaling capabilities for operation with only one hardware solution ...

Page 2

Si3233 2 Preliminary Rev. 0.5 ...

Page 3

... Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38 4. Indirect Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85 4.1. Oscillators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 4.2. Digital Programmable Gain/Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 4.3. SLIC Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 4.4. FSK Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89 5. Pin Descriptions: Si3233 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91 6. Pin Descriptions: Si3201 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94 7. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 8. Package Outline: 38-Pin QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 9. Package Outline: 16-Pin SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98 Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100 Preliminary Rev. 0.5 ...

Page 4

... Thermal resistance assumes a multi-layer PCB with the exposed pad soldered to a topside PCB pad Symbol Si3233 DDD DDA1 DDA2 IND STG θ JA θ Si3201 BAT V INHV STG 3 θ Preliminary Rev. 0.5 Value Unit –0.5 to 6.0 V ±10 mA – ...

Page 5

... Parameter Ambient Temperature Ambient Temperature Si3233 Supply Voltage Si3201 Supply Voltage Si3201 Battery Voltage *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 Product specifications are only guaranteed when the typical application circuit (including component tolerances) is used ...

Page 6

Si3233 Table 3. AC Characteristics (Continued 3. 70°C for F-Grade, –40 to 85°C for G-Grade) DDA DDD A Parameter Longitudinal Impedance Longitudinal Current per Pin Notes: 1. Analog signal ...

Page 7

Table 4. Linefeed Characteristics ( 3. 70°C for F-Grade, –40 to 85°C for G-Grade) DDA DDD A Parameter Symbol Loop Resistance Range R LOOP DC Loop Current Accuracy DC Open ...

Page 8

Si3233 Table 5. Monitor ADC Characteristics ( 3. 70°C for F-Grade, –40 to 85°C for G-Grade) DDA DDD A Parameter Symbol Differential Nonlinearity DNLE (6-bit resolution) Integral Nonlinearity INLE (6-bit ...

Page 9

... Table 8. Power Supply Characteristics ( 3. 5. 70°C for F-Grade, –40 to 85°C for G-Grade) DDA DDD A Parameter Symbol Power Supply Current Analog and Digital V Supply Current (Si3201 Supply Current BAT Notes 3.3 V. DDD DDA 5.25 V. ...

Page 10

Si3233 Table 9. Switching Characteristics—General Inputs 3. 70°C for F-Grade, –40 to 85°C for G-Grade, C DDA DDA A Parameter Rise Time, RESET RESET Pulse Width Note: All timing ...

Page 11

SCLK t su1 CS SDI t d1 SDO Figure 2. SPI Timing Diagram t thru su2 Preliminary Rev. 0.5 Si3233 ...

Page 12

... All circuit ground should have a single- 15 point connection to the ground plane. 4. Si3201 bottom-side exposed should be electronically and thermally connected to talk ground plane. Figure 3. Si3233/Si3233M Application Circuit Using Si3201 Table 11. Si3233/Si3233M + Si3201 External Component Values Component(s) C1,C2 10 µ Ceramic Low Leakage Electrolytic, ±20% C3,C4 C5,C6 C15,C16,C17,C24 ...

Page 13

SDCH SDCL DCFF DCDRV Notes: 1. Values and configurations for these components can be derived from Table 17 or from App Note 45. 2. Voltage rating for C14 and C25 must be greater than VDC. Figure 4. Si3233 DC-DC Converter ...

Page 14

Si3233 SDCH SDCL DCFF DCDRV Figure 5. Si3233M MOSFET/Transformer DC-DC Converter Circuit Table 13. Si3233M MOSFET/Transformer DC-DC Converter Component Values Component( µF, 100 V, Electrolytic, ±20%, low ESR (tan(δ) < 0.08) C14* C25* 10 µF, Electrolytic, ±20%, low ...

Page 15

Q1 5401 R10 10 TIP Q6 5551 C8 C5 220nF 22nF R6 C6 80.6 22nF RING Notes: 1. Values and configurations for these components can be derived from Table 16 or from App Note 45. 2. Only one component per ...

Page 16

Si3233 Table 14. Si3233/Si3233M External Component Values—Discrete Solution (Continued) R15 R21 1/10 W, ±1% (See AN45 or Table 16 for value selection) R28,R29 R32* *Note: Only one component per system needed. VINp TX gain = 0.6622 CMlevel VINm VOUTm VOUTp ...

Page 17

Table 16. Component Value Selection for Si3233 Component R28 1/ resistor For V DD For V DD R29 1/ resistor For V CLAMP For V CLAMP For V CLAMP Table 17. Component Value Selection Examples for ...

Page 18

... DTMF tones, phase continuous FSK (caller ID) signaling, and call progress tones. The Si3201 linefeed interface IC performs all high voltage functions. The Si3201 can also be replaced with low-cost discrete circuits as shown in the typical application in Figure 6. The Si3233 is designed to be used with Broadcom ...

Page 19

... A “direct” register is one that is mapped directly. 2.2.2. Linefeed Architecture The Si3233 uses either the Si3201 linefeed interface low-cost external circuit to generate the high voltages required for subscriber line interfaces. The ProSLIC uses both voltage and current sensing to control TIP and RING ...

Page 20

Si3233 Table 20. ProSLIC Linefeed Operations LF[2:0]* Linefeed State 000 Open 001 Forward Active 010 Forward On-Hook Transmission 011 TIP Open 100 Ringing 101 Reverse Active 110 Reverse On-Hook Transmission 111 Ring Open Note: The Linefeed register (LF) is located ...

Page 21

Power Monitoring and Line Fault Detection In addition to reporting voltages and currents, the ProSLIC continuously monitors the power dissipated in each linefeed transistor. Realtime output power of any one of the six linefeed transistors can be read by ...

Page 22

Si3233 Table 22. Associated Power Monitoring and Power Fault Registers (Continued) Power Alarm Interrupt Enable Power Alarm Automatic/Manual Detect *Note: The ProSLIC uses registers that are both directly and indirectly mapped. A “direct” register is one that is mapped directly. ...

Page 23

Voltage-Based Loop Closure Detection An optional voltage-based loop closure detection mode is enabled by setting LCVE = 1 (direct Register 108, bit 2). In this mode, the loop voltage is compared to the loop closure threshold register represents a ...

Page 24

Si3233 solution from a single 3 power supply. By nature of a dc-dc converter’s operation, peak and average input currents can become large with small input voltages. Consider this when selecting the appropriate input voltage and ...

Page 25

TRACK = 1 mode. Therefore, the brief on-hook voltage measurement would yield approximately the same voltage ...

Page 26

Si3233 2.3.6. DC-DC Converter During Ringing When the ProSLIC enters the ringing state, it requires voltages well above those used in the active mode. The voltage to be generated and regulated by the dc-dc converter during a ringing burst is ...

Page 27

Oscillator Frequency and Amplitude Each of the two tone generators contains a two-pole resonant oscillator circuit with frequency and amplitude, which are programmed via indirect registers OSC1, OSC1X, OSC1Y, OSC2, OSC2X, and OSC2Y. The sample rate for the two ...

Page 28

Si3233 Table 25. Associated Tone Generator Registers Parameter Oscillator 1 Frequency Coefficient Oscillator 1 Amplitude Coefficient Oscillator 1 initial phase coefficient Oscillator 1 Active Timer Oscillator 1 Inactive Timer Oscillator 1 Control Parameter Oscillator 2 Frequency Coefficient Oscillator 2 Amplitude ...

Page 29

Enhanced FSK Waveform Generation Enhanced FSK generation can be enabled by setting FSKEN = 1 (direct Register 108, bit 6) and REL = 1 (direct Register 32, bit 6). In this mode, the user can define mark (1) and ...

Page 30

Si3233 Table 26. Registers for Ringing Generation (Continued) Ringing amplitude Ringing initial phase Common Mode Bias Adjust During Ringing Note: The ProSLIC uses registers that are both directly and indirectly mapped. A “direct” register is one that is mapped directly. ...

Page 31

T 1 ---------- - t = – ⎝ RISE 4 CF where T = ringing period, and CF = desired crest factor. For example, to generate signal, the equations are as follows: ...

Page 32

Si3233 Linefeed Shadow register (direct Register 64). The data then feeds into a programmable digital low pass filter, which removes unwanted ac signal components before threshold detection. The output of the low pass filter is compared to a programmable threshold, ...

Page 33

Table 28. Recommended Ring Trip Values for Ringing Ringing NRTP Frequency Hz decimal 16.667 64 20 100 30 112 40 128 50 213 60 256 RPTP hex decimal hex 0200 34 mA 3600 0320 34 mA 3600 0380 34 mA ...

Page 34

Si3233 2.6. Two-Wire Impedance Matching The ProSLIC provides on-chip programmable two-wire impedance settings to meet a wide variety of worldwide two-wire return loss requirements. The two-wire impedance is programmed by loading one of the eight available impedance values into the ...

Page 35

The interrupt control block will then set the associated bit in the interrupt status register if the enable bit for that interrupt is set. The INT pin is a NOR of the ...

Page 36

Si3233 SCLK CS SDI SDO SCLK CS SDI SDO High Impedance 36 Don't Care High Impedance Figure 16. Serial Write 8-Bit Mode Don't Care ...

Page 37

SDO CPU CS SDI Chip Select Byte SCLK SDI0 SDI1 – SDI2 – – SDI3 – – – C7 ...

Page 38

Si3233 3. Control Registers Indirect registers are accessed through direct registers 28 through 31. Instructions on how to access them is described in “4. Indirect Registers” beginning on page 85. Note: Any register not listed here is reserved and must ...

Page 39

Table 29. Direct Register Summary (Continued) Register Name 38 Oscillator 1 Inactive Timer—Low Byte 39 Oscillator 1 Inactive Timer—High Byte 40 Oscillator 2 Active Timer—Low Byte 41 Oscillator 2 Active Timer—High Byte 42 Oscillator 2 Inactive Timer—Low Byte 43 Oscillator ...

Page 40

Si3233 Table 29. Direct Register Summary (Continued) Register Name 75 Low Battery Voltage 76 Power Monitor Pointer 77 Line Power Output Monitor 78 Loop Voltage Sense 79 Loop Current Sense 80 TIP Voltage Sense 81 RING Voltage Sense 82 Battery ...

Page 41

Table 29. Direct Register Summary (Continued) Register Name 101 Common Mode Loop Current Gain Calibration Result 102 Current Limit Calibration Result 103 Monitor ADC Offset Calibration Result 104 Analog DAC/ADC Offset 105 DAC Offset Calibration Result 106 Common Mode Balance ...

Page 42

Si3233 Register 0. SPI Mode Select Bit D7 D6 Name SPIDC SPIM Type R/W R/W Reset settings = 00xx_xxxx Bit Name 7 SPIDC SPI Daisy Chain Mode Enable Disable SPI daisy chain mode Enable SPI daisy ...

Page 43

Register 9. Audio Gain Control Bit D7 D6 Name Type Reset settings = 0000_0000 Bit Name 7:2 Reserved Read returns zero. 1:0 ARX[1:0] Analog Receive Path Gain –3 3 ...

Page 44

Si3233 Register 10. Two-Wire Impedance Synthesis Control Bit D7 D6 Name Type Reset settings = 0000_1000 Bit Name 7:6 Reserved Read returns zero. 5:4 CLC[1:0] Line Capacitance Compensation Off ...

Page 45

Register 14. Power Down Control 1 Bit D7 D6 Name Type Reset settings = 0001_0000 Bit Name 7:5 Reserved Read returns zero. 4 DCOF DC-DC Converter Power-Off Control Automatic power control Override automatic control and force ...

Page 46

Si3233 Register 15. Power Down Control 2 Bit D7 D6 Name Type Reset settings = 0000_0000 Bit Name 7:4 Reserved Read returns zero. 3 DACM Digital to Analog Converter Manual/Automatic Power Control Automatic power control Manual ...

Page 47

Register 18. Interrupt Status 1 Bit D7 D6 Name RGIP Type Reset settings = 0000_0000 Bit Name 7:6 Reserved Read returns zero. 5 RGIP Ringing Inactive Timer Interrupt Pending. Writing 1 to this bit clears a pending interrupt ...

Page 48

Si3233 Register 19. Interrupt Status 2 Bit D7 D6 Name Q6AP Q5AP Q4AP Type R/W R/W Reset settings = 0000_0000 Bit Name 7 Q6AP Power Alarm Q6 Interrupt Pending. Writing 1 to this bit clears a pending interrupt ...

Page 49

Register 20. Interrupt Status 3 Bit D7 D6 Name Type Reset settings = 0000_0000 Bit Name 7:2 Reserved Read returns zero. 1 INDP Indirect Register Access Serviced Interrupt. This bit is set once a pending indirect register service request has ...

Page 50

Si3233 Register 21. Interrupt Enable 1 Bit D7 D6 Name RGIE Type Reset settings = 0000_0000 Bit Name 7:6 Reserved Read returns zero. 5 RGIE Ringing Inactive Timer Interrupt Enable Interrupt masked Interrupt enabled. 4 RGAE ...

Page 51

Register 22. Interrupt Enable 2 Bit D7 D6 Name Q6AE Q5AE Q4AE Type R/W R/W Reset settings = 0000_0000 Bit Name 7 Q6AE Power Alarm Q6 Interrupt Enable Interrupt masked Interrupt enabled. 6 Q5AE Power Alarm ...

Page 52

Si3233 Register 23. Interrupt Enable 3 Bit D7 D6 Name Type Reset settings = 0000_0000 Bit Name 7:2 Reserved Read returns zero. 1 INDE Indirect Register Access Serviced Interrupt Enable Interrupt masked Interrupt enabled. 0 Reserved ...

Page 53

Register 28. Indirect Data Access—Low Byte Bit D7 D6 Name Type Reset settings = 0000_0000 Bit Name 7:0 IDA[7:0] Indirect Data Access—Low Byte. A write to IDA followed by a write to IAA will place the contents of IDA into ...

Page 54

Si3233 Register 30. Indirect Address Bit D7 D6 Name Type Reset settings = xxxx_xxxx Bit Name 7:0 IAA[7:0] Indirect Address Access. A write to IDA followed by a write to IAA will place the contents of IDA into an indirect ...

Page 55

Register 32. Oscillator 1 Control Bit D7 D6 Name OSS1 REL Type R R/W Reset settings = 0000_0000 Bit Name 7 OSS1 Oscillator 1 Signal Status Output signal inactive Output signal active. 6 REL Oscillator 1 ...

Page 56

Si3233 Register 33. Oscillator 2 Control Bit D7 D6 Name OSS2 Type R Reset settings = 0000_0000 Bit Name 7 OSS2 Oscillator 2 Signal Status Output signal inactive Output signal active. 6 Reserved Read returns zero. ...

Page 57

Register 34. Ringing Oscillator Control Bit D7 D6 Name RSS RDAC Type R Reset settings = 0000_0000 Bit Name 7 RSS Ringing Signal Status Ringing oscillator output signal inactive Ringing oscillator output signal active. 6 Reserved ...

Page 58

Si3233 Register 36. Oscillator 1 Active Timer—Low Byte Bit D7 D6 Name Type Reset settings = 0000_0000 Bit Name 7:0 OAT1[7:0] Oscillator 1 Active Timer. LSB = 125 µs Register 37. Oscillator 1 Active Timer—High Byte Bit D7 D6 Name ...

Page 59

Register 39. Oscillator 1 Inactive Timer—High Byte Bit D7 D6 Name Type Reset settings = 0000_0000 Bit Name 7:0 OIT1[15:8] Oscillator 1 Inactive Timer. Register 40. Oscillator 2 Active Timer—Low Byte Bit D7 D6 Name Type Reset settings = 0000_0000 ...

Page 60

Si3233 Register 42. Oscillator 2 Inactive Timer—Low Byte Bit D7 D6 Name Type Reset settings = 0000_0000 Bit Name 7:0 OIT2[7:0] Oscillator 2 Inactive Timer. LSB = 125 µs Register 43. Oscillator 2 Inactive Timer—High Byte Bit D7 D6 Name ...

Page 61

Register 49. Ringing Oscillator Active Timer—High Byte Bit D7 D6 Name Type Reset settings = 0000_0000 Bit Name 7:0 RAT[15:8] Ringing Active Timer. Register 50. Ringing Oscillator Inactive Timer—Low Byte Bit D7 D6 Name Type Reset settings = 0000_0000 Bit ...

Page 62

Si3233 Register 52. FSK Data Bit D7 D6 Name Type Reset settings = 0000_0000 Bit Name 7:1 Reserved Read returns zero. 0 FSKDAT FSK Data. When FSKEN = 1 (direct Register 108, bit 6) and REL = 1 (direct Register ...

Page 63

Register 64. Linefeed Control Bit D7 D6 Name LFS[2:0] Type Reset settings = 0000_0000 Bit Name 7 Reserved Read returns zero. 6:4 LFS[2:0] Linefeed Shadow. This register reflects the actual realtime linefeed state. Automatic operations may cause actual linefeed state ...

Page 64

Si3233 Register 65. External Bipolar Transistor Control Bit D7 D6 Name SQH Type R/W Reset settings = 0110_0001 Bit Name 7 Reserved Read returns zero. 6 SQH Audio Squelch squelch STIPAC and SRINGAC pins squelched. ...

Page 65

Register 66. Battery Feed Control Bit D7 D6 Name Type Reset settings = 0000_0011 Bit Name 7:5 Reserved Read returns zero. 4 VOV Overhead Voltage Range Increase. This bit selects the programmable range for ...

Page 66

Si3233 Register 67. Automatic/Manual Control Bit D7 D6 Name MNCM MNDIF Type R/W Reset settings = 0001_1111 Bit Name 7 Reserved Read returns zero. 6 MNCM Common Mode Manual/Automatic Select Automatic control Manual control, in which ...

Page 67

Register 68. Loop Closure/Ring Trip Detect Status Bit D7 D6 Name Type Reset settings = 0000_0000 Bit Name 7:3 Reserved Read returns zero. 2 DBIRAW Ring Trip/Loop Closure Unfiltered Output. State of this bit reflects the realtime output of ring ...

Page 68

Si3233 Register 70. Ring Trip Detect Debounce Interval Bit D7 D6 Name Type Reset settings = 0000_1010 Bit Name 7 Reserved Read returns zero. 6:0 RTDI[6:0] Ring Trip Detect Debounce Interval. The value written to this register defines the minimum ...

Page 69

Register 72. On-Hook Line Voltage Bit D7 D6 Name VSGN Type R/W Reset settings = 0010_0000 Bit Name 7 Reserved Read returns zero. 6 VSGN On-Hook Line Voltage. The value written to this bit sets the on-hook line voltage polarity ...

Page 70

Si3233 Register 74. High Battery Voltage Bit D7 D6 Name Type Reset settings = 0011_0010 Bit Name 7:6 Reserved Read returns zero. 5:0 VBATH[5:0] High Battery Voltage. The value written to this register sets high battery voltage. VBATH must be ...

Page 71

Register 76. Power Monitor Pointer Bit D7 D6 Name Type Reset settings = 0000_0000 Bit Name 7:3 Reserved Read returns zero. 2:0 PWRMP[2:0] Power Monitor Pointer. Selects the external transistor from which to read power output. The power of the ...

Page 72

Si3233 Register 78. Loop Voltage Sense Bit D7 D6 Name LVSP Type R Reset settings = 0000_0000 Bit Name 7 Reserved Read returns zero. 6 LVSP Loop Voltage Sense Polarity. This register reports the polarity of the differential loop voltage ...

Page 73

Register 80. TIP Voltage Sense Bit D7 D6 Name Type Reset settings = 0000_0000 Bit Name 7:0 VTIP[7:0] TIP Voltage Sense. This register reports the realtime voltage at TIP with respect to ground. The range (0x00) to ...

Page 74

Si3233 Register 83. Battery Voltage Sense 2 Bit D7 D6 Name Type Reset settings = 0000_0000 Bit Name 7:0 VBATS2[7:0] Battery Voltage Sense 2. This register is one of two registers that reports the realtime voltage ground. ...

Page 75

Register 86. Transistor 3 Current Sense Bit D7 D6 Name Type Reset settings = xxxx_xxxx Bit Name 7:0 IQ3[7:0] Transistor 3 Current Sense. This register reports the realtime current through Q3. The range (0x00) to 9.59 mA ...

Page 76

Si3233 Register 89. Transistor 6 Current Sense Bit D7 D6 Name Type Reset settings = xxxx_xxxx Bit Name 7:0 IQ6[7:0] Transistor 6 Current Sense. This register reports the realtime current through Q6. The range (0x00) to 80.58 ...

Page 77

Register 93. DC-DC Converter Switching Delay Bit D7 D6 Name DCCAL DCPOL Type R/W Reset settings = 0001_0100 (Si3233) Reset settings = 0011_0100 (Si3233M) Bit Name 7 DCCAL DC-DC Converter Peak Current Monitor Calibration Status. Writing a one to this ...

Page 78

Si3233 Register 96. Calibration Control/Status Register 1 Bit D7 D6 Name CAL CALSP Type R/W Reset settings = 0001_1111 Bit Name 7 Reserved Read returns zero. 6 CAL Calibration Control/Status Bit. Setting this bit begins calibration of the entire system. ...

Page 79

Register 97. Calibration Control/Status Register 2 Bit D7 D6 Name Type Reset settings = 0001_1111 Bit Name 7:5 Reserved Read returns zero. 4 CALM1 Monitor ADC Calibration Normal operation or calibration complete Calibration enabled or ...

Page 80

Si3233 Register 98. RING Gain Mismatch Calibration Result Bit D7 D6 Name Type Reset settings = 0001_0000 Bit Name 7:5 Reserved Read returns zero. 4:0 CALGMR[4:0] Gain Mismatch of IE Tracking Loop for RING Current. Register 99. TIP Gain Mismatch ...

Page 81

Register 101. Common Mode Loop Current Gain Calibration Result Bit D7 D6 Name Type Reset settings = 0001_0001 Bit Name 7:5 Reserved Read returns zero. 4:0 CALGC[4:0] Common Mode DAC Gain Calibration Result. Register 102. Current Limit Calibration Result Bit ...

Page 82

Si3233 Register 104. Analog DAC/ADC Offset Bit D7 D6 Name Type Reset settings = 0000_0000 Bit Name 7:4 Reserved Read returns zero. 3 DACP Positive Analog DAC Offset. 2 DACN Negative Analog DAC Offset. 1 ADCP Positive Analog ADC Offset. ...

Page 83

Register 107. DC Peak Current Monitor Calibration Result Bit D7 D6 Name Type Reset settings = 0000_1000 Bit Name 7:4 Reserved Read returns zero. 3:0 CMDCPK[3:0] DC Peak Current Monitor Calibration Result. Register 108. Enhancement Enable Bit D7 D6 Name ...

Page 84

Si3233 Bit Name 2 LCVE Voltage-Based Loop Closure. Enables loop closure to be determined by the TIP-to-RING voltage rather than loop cur- rent Loop closure determined by loop current Loop closure determined by TIP-to-RING voltage. 1 ...

Page 85

Indirect Registers Indirect registers are not directly mapped into memory but are accessible through the IDA and IAA registers. A write to IDA followed by a write to IAA is interpreted as a write request to an indirect register. ...

Page 86

Si3233 Table 31. Oscillator Indirect Registers Summary (Continued) Addr D15 D14 D13 D12 Table 32. Oscillator Indirect Registers Description Addr 0 Oscillator 1 Frequency Coefficient. Sets tone generator 1 frequency. 1 Oscillator 1 Amplitude Register. Sets tone ...

Page 87

Table 33. Digital Programmable Gain/Attenuation Indirect Registers Summary Addr D15 D14 D13 D12 D11 13 14 Table 34. Digital Programmable Gain/Attenuation Indirect Registers Description Addr. 13 Receive Path Digital to Analog Converter Gain/Attenuation. This register sets gain/attenuation for the receive ...

Page 88

Si3233 4.3. SLIC Control See descriptions of linefeed interface and power monitoring for guidelines on computing register values. All values are represented in twos-complement format. Note: The values of all indirect registers are undefined following the reset state. Shaded areas ...

Page 89

Table 36. SLIC Control Indirect Registers Description (Continued) Addr 20 Power Alarm Threshold for Transistors Q3 and Q4. 21 Power Alarm Threshold for Transistors Q5 and Q6. 22 Loop Closure Filter Coefficient. 23 Ring Trip Filter Coefficient. 24 Thermal Low ...

Page 90

Si3233 Table 38. FSK Control Indirect Registers Description Addr 69 FSK Amplitude Coefficient for Space. When FSKEN = 1 and REL = 1, this register sets the amplitude to be used when gener- ating a space or “0”. When the ...

Page 91

Pin Descriptions: Si3233 Pin # Name 35 CS Chip Select. Active low. When inactive, SCLK and SDI are ignored and SDO is high impedance. When active, the serial port is operational. 36 INT Interrupt. Maskable interrupt output. Open drain ...

Page 92

Si3233 Pin # Name 8 CAPP SLIC Stabilization Capacitor. Capacitor used in low pass filter to stabilize SLIC feedback loops. 9 QGND Component Reference Ground. 10 CAPM SLIC Stabilization Capacitor. Capacitor used in low pass filter to stabilize SLIC feedback ...

Page 93

Pin # Name 28 TEST1 Test. Enables test modes for Silicon Labs internal testing. This pin should always be tied to ground for normal operation. 29 DCFF DC Feed-Forward/High Current General Purpose Output. Feed-forward drive of external bipolar transistors to ...

Page 94

... Si3233 6. Pin Descriptions: Si3201 Pin # Name Input/ Output 1 TIP I — 3 RING I/O 4 VBAT — 5 VBATH — 7 GND — 8 VDD — 10 SRINGE O 11 STIPE O 13 IRINGN I 14 IRINGP I 15 ITIPN I 16 ITIPP I Bottom-Side — Exposed Pad 94 TIP 1 16 ITIPP ITIPN ...

Page 95

... ProSLIC Si3233-X-GM ProSLIC Si3233M-X-FM ProSLIC Si3233M-X-GM ProSLIC Si3201-X-FS Line Interface Si3201-X-GS Line Interface Notes: 1. “X” denotes product revision. 2. Add an “R” at the end of the device to denote tape and reel options; 2500 quantity per reel. 3. All devices are lead-free and RoHS-compliant. ...

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Si3233 8. Package Outline: 38-Pin QFN Figure 19 illustrates the package details for the Si3233. Table 39 lists the values for the dimensions shown in the illustration. Figure 19. 38-Pin Quad Flat No-Lead Package (QFN) Table 39. Package Diagram Dimensions ...

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... Package Outline: 16-Pin SOIC Figure 20 illustrates the package details for the Si3201. Table 40 lists the values for the dimensions shown in the illustration . –A– Seating Plane Figure 20. 16-pin Small Outline Integrated Circuit (SOIC) Package Table 40. Package Diagram Dimensions ...

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Si3233 OCUMENT HANGE IST Revision 0.1 to Revision 0.5 Updated Section "2.6. Two-Wire Impedance Matching" on page 34 and Register 10, “Two-Wire Impedance Synthesis Control,” on page 44. Removed invalid reference to ZEXT bit. 98 Preliminary Rev. ...

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N : OTES Preliminary Rev. 0.5 Si3233 99 ...

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Si3233 C I ONTACT NFORMATION Silicon Laboratories Inc. 4635 Boston Lane Austin, TX 78735 Tel: 1+(512) 416-8500 Fax: 1+(512) 416-9669 Toll Free: 1+(877) 444-3032 Email: ProSLICinfo@silabs.com Internet: www.silabs.com The information in this document is believed to be accurate in all ...

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