SI3015-F-FS Silicon Laboratories Inc, SI3015-F-FS Datasheet

IC ISOMODEM LINE-SIDE 16SOIC

SI3015-F-FS

Manufacturer Part Number
SI3015-F-FS
Description
IC ISOMODEM LINE-SIDE 16SOIC
Manufacturer
Silicon Laboratories Inc
Type
Chipsetr
Datasheets

Specifications of SI3015-F-FS

Package / Case
16-SOIC (3.9mm Width)
Data Format
V.90
Interface
Serial
Voltage - Supply
3.3 V ~ 5 V
Mounting Type
Surface Mount
Product
Modem Chip
Supply Voltage (min)
3 V
Supply Current
26 mA
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Baud Rates
-
Lead Free Status / Rohs Status
Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SI3015-F-FS
Quantity:
3 000
Part Number:
SI3015-F-FSR
Manufacturer:
SAMSUNG
Quantity:
2 000
Part Number:
SI3015-F-FSR
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
V. 22
Features
Applications
Description
The Si2400 ISOmodem® is a complete modem chipset with integrated
direct access arrangement (DAA) that provides a programmable line
interface to meet global telephone line requirements. Available in two 16-
pin small outline (SOIC) packages, it eliminates the need for a separate
DSP data pump, modem controller, analog front end (AFE), isolation
transformer, relays, opto-isolators, 2- to 4-wire hybrid, and voice codec.
The Si2400 is ideal for embedded modem applications due to its small
board space, low power consumption, and global compliance.
Functional Block Diagram
Rev. 1.3 8/06
Data Modem Formats
Caller ID Detection and Decode
DTMF Tone Gen./Detection
3.3 V or 5.0 V Power
UART with Flow Control
Set Top Boxes
Power Meters
CD/AIN/G PIO 2
ALERT/G PIO 4
EO FR/G PIO 1
2400 bps: V.22bis
1200 bps: V.22, V.23, Bell 212A
300 bps: V.21, Bell 103
Fast Connect and V.23 Reversing
SIA and other security protocols
ESC/G PIO 3
CLKOUT
RESET
XTALO
XTALI
CTS
RXD
TXD
B I S
I S O
Interface
Control
Interface
Clock
Si2400
M O D E M
Call Progress)
(Data Pump)
(AT Decoder
μ
Controller
Codec
AOUT
Audio
Security Systems
ATM Terminals
DSP
Copyright © 2006 by Silicon Laboratories
Integrated DAA
AT Command Set Support
Integrated Voice Codec
PCM Data Pass-Through Mode
HDLC Framing in Hardware
Call Progress Support
Pb-Free/RoHS-Compliant
Packages Available
®
Capacitive Isolation
Parallel Phone Detect
Globally Compliant Line Interface
Overcurrent Detection
W I T H
Si3015
Termination
Ring Detect
O ff-Hook
Hybrid
and
DC
Medical Monitoring
Point-of-Sale
I
N T E G R A T E D
VREG
RX
FILT
FILT2
REF
DCT
VREG2
REXT
REXT2
RNG 1
RNG 2
QB
QE
QE2
Patents pending
CLKOUT
RESET
XTALO
XTALI
RNG1
RNG2
RXD*
IGND
TXD*
CTS
DCT
QE2
C1B
QB
QE
G
V
Ordering Information
D
Pin Assignments
L O B A L
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
See page 90.
Si2400
Si3015
Si2400
16
15
14
13
12
10
11
16
15
14
13
12
10
11
9
9
D A A
EOFR/GPIO1
CD/AIN/GPIO2
ESC/GPIO3
ISOB
GND
C1A
ALERT/GPIO4
AOUT
FILT2
FILT
RX
REXT
REXT2
REF
VREG2
VREG
Si2400

Related parts for SI3015-F-FS

SI3015-F-FS Summary of contents

Page 1

... XTALI 1 EOFR/GPIO1 16 XTALO CD/AIN/GPIO2 2 15 CLKOUT ESC/GPIO3 ISOB RXD* GND 5 12 TXD* C1A 6 11 CTS ALERT/GPIO4 7 10 RESET AOUT 9 8 Si3015 QE2 FILT2 1 16 DCT FILT 2 15 IGND C1B REXT 4 13 RNG1 REXT2 5 12 RNG2 REF VREG2 VREG 9 8 Patents pending ...

Page 2

Si2400 2 Rev. 1.3 ...

Page 3

... Call Progress Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Appendix A—DAA Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Appendix B—Typical Modem Applications Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . .84 Appendix C—UL1950 3rd Edition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 9. Pin Descriptions: Si2400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86 10. Pin Descriptions: Si3015 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88 11. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 12. Package Outline: 16-Pin SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92 Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94 Rev. 1.3 Si2400 ...

Page 4

... The Si2400 specifications are guaranteed when the typical application circuit (including component tolerance) and any Si2400 and any Si3015 are used. See Figure 3 on page 10 for a typical application circuit. 2. 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 ° ...

Page 5

Table 2. Loop Characteristics (V = 3 70°C for K-Grade and –40 to 85°C for B-Grade, See Figure Parameter DC Termination Voltage DC Termination Voltage DC Termination Voltage DC Termination ...

Page 6

Si2400 1 Table 3. DC Characteristics = = (V 4. 70°C for K-Grade Parameter High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage Low ...

Page 7

... Si3015 Figure 1. Test Circuit for Loop Characteristics Table 5. AC Characteristics = (V 3 4. Parameter Sample Rate Crystal Oscillator Frequency Transmit Frequency Response Receive Frequency Response 1 Transmit Full Scale Level 1 Receive Full Scale Level 3,4,5 Dynamic Range 3,4,7 Dynamic Range 3,4,5 ...

Page 8

Si2400 Table 6. Voice Codec AC Characteristics = (V 3 4. Parameter AOUT Dynamic Range, APO = 0 AOUT THD, APO = 0 AOUT Full Scale Level, APO = 0 ...

Page 9

Table 8. Switching Characteristics (V = 3 4. Parameter CLKOUT Output Clock Frequency Baud Rate Accuracy Start Bit ↓ to CTS ↑ CTS ↓ Active to Start Bit↓ RESET ↓ ...

Page 10

Si2400 2. Typical Application Schematic + Rev. 1.3 ...

Page 11

... If the auto answer, ring detect, and caller ID features are not used, R9, R10, C7, C8, C18, and C19 may be removed. In this case, the RNG1 and RNG2 pins of the Si3015 should be connected to the IGND pin. 4. C22 and C30 may provide an additional improvement in emissions/immunity and/or voice performance, depending on design and layout. Population option recommended. See " ...

Page 12

... If the auto answer, ring detect, and caller ID features are not used, R9, R10, C7, C8, C18, and C19 may be removed. In this case, the RNG1 and RNG2 pins of the Si3015 should be connected to the IGND pin. 4. C22 and C30 may provide an additional improvement in emissions/immunity and/or voice performance, depending on design and layout. Population option recommended. See " ...

Page 13

Analog Input/Output Figure 4 illustrates an optional application circuit to support the analog output capability of the Si2400 for voice monitoring purposes OUT Figure 4. Optional Connection to AOUT for a Monitoring Speaker ‘ Table 9. ...

Page 14

Si2400 5. Functional Description The Si2400 ISOmodem is a complete modem chipset with integrated direct access arrangement (DAA) that provides a programmable line interface to meet global telephone line requirements. Available in two 16-pin small outline packages, this solution includes ...

Page 15

... At this point, AT-style commands are not 0x12 accepted. There are three methods which may be used 0x20 to return the Si2400 to command mode: Rev. 1.3 Si2400 Si2400 Si3015 RJ11 DCE (Line) Interface Data Rate: S07 (MF1) Data Form at: S15 (MLC) 15 ...

Page 16

Si2400 Use the ESC pin—To program the GPIO3 pin to function as an ESCAPE input, set GPIO3 SE2[5:4] = 11b. In this setting, a positive edge detected on this pin will return the modem to command mode. The “ATO” string ...

Page 17

Low Power Modes The Si2400 has three low power modes. These are described below: DSP Powerdown. The DSP processor can be powered down by setting register SEB[3] (PDDE this mode, the serial interface still ...

Page 18

Si2400 5.5. Parallel Phone Detection The Si2400 has the ability to detect a phone or other device that is off hook on a shared line. This enables the ISOmodem to avoid interrupting a call in progress on a shared line ...

Page 19

Reporting of an On-Hook Intrusion The reporting of an on-hook intrusion is the same whether or not the differential or absolute algorithm is chosen. An “i” result code is sent when an intrusion is detected. Conversely an “I” result ...

Page 20

Si2400 5.5.5. Differential Algorithm #2 This differential algorithm has features added to Differential Algorithm #1. The additional features are as follows: Programmable deglitch filter to minimize false intrusions Ability to preset initial LVCS reference prior to going off-hook Optional time ...

Page 21

ALERT pin is the only method of reporting an intrusion to the host. The “i” and “I” result codes may be sent to the host under the following conditions the modem is ...

Page 22

... Another option is setting S13[5] (OFHE When this bit is set, the b Si3015 is forced to CTR21 termination during the short period of time from the off-hook event until the timeout defined by OCDT. After the OCDT timeout, the desired dc termination is restored determined that a false overcurrent condition has ...

Page 23

Tone Generation and Tone Detection The Si2400 provides comprehensive and flexible tone generation and detection. This includes all tones needed to establish a circuit connection and to set up and control a communication session. The tone generation furnishes the ...

Page 24

... Progress) Voice Mode (DRT = 01b) Si2400 AOUT AIN (Voice Out) (Voice In) Loopback Mode (DRT = 10b) Si2400 AOUT AIN Codec Mode (DRT = 11b) Si2400 AOUT AIN (Voice Out) (Voice In) Figure 10. Signal Routing Rev. 1.3 Si3015 RJ11 RJ11 Si3015 RJ11 RJ11 Si3015 RJ11 ...

Page 25

Analog Codec The Si2400 features an on-chip, voice quality codec. The codec consists of a digital to analog converter (DAC) and an analog to digital converter (ADC). The sample rate for the codec is set to 9.6 kHz. When ...

Page 26

Si2400 5.13.2. Modem in slave mode Configure GPIO4 as ALERT (S2E[7:6] [GPIO4 The Si2400 performs a reverse turnaround when it detects a carrier drop longer than 20 ms. The Si2400 then reverses (it changes its carrier from 1300 ...

Page 27

Si2400 echoes “e” (error). Additionally, if the Si2400 detects an abort (seven or more contiguous ones), then it will echo an “A”. When the “G”, “e”, or “A” (referred frame result word) ...

Page 28

Si2400 Table 15. Handshaking Control Registers Register Name S1E TATL Transmit Answer Tone Length S1F ATTD Answer Tone to Transmit Delay S20 UNL Unscrambled Ones Length—V.22 S21 TSOD Transmit Scrambled Ones Delay—V.22 S22 TSOL Transmit Scrambled Ones Length—V.22 S23 VDDL ...

Page 29

AT Command Set The controller provides several vital functions including AT command parsing, DAA control, connect sequence control, DCE protocol control, intrusion detection, parallel phone off-hook detection, escape control, caller ID control and formatting, PCM mode control, ring detect, ...

Page 30

Si2400 6.3. AT Command Set Description A Answer The “A” command makes the modem go off hook and respond to an incoming call. This command executed after the Si2400 has indicated a ring has occurred. (The Si2400 ...

Page 31

This command causes the modem to echo the chip revision for the Si2400 device Revision Revision Revision C, etc. M Speaker On/Off Options These options are used to control AOUT for use ...

Page 32

... The Si2400 enters a low-power mode wherein the DSP and microcontroller are powered down. The serial interface also stops functioning. In this mode, only the line-side chip (Si3015) and the communication link function. An incoming ring signal or line transient causes the Si2400 to power up and echo an “R”. ...

Page 33

Table 18. AT Command Set Extensions for Alarm Industry Command Function A0 Answer and switch to DTMF monitor mode A1 Answer and switch to “SIA Format” !0 Dial and switch to DTMF monitor mode !1 Dial and switch to DTMF ...

Page 34

Si2400 !<message 3><CR> !<message n><CR> The modem dials the phone number and echoes “r” (ring), “b” (busy), and “c” (connect) as appropriate. “c” echoes only after the Si2400 detects the Handshake Tone. After a 250 ...

Page 35

Bellcore CID will function normally. Basic Command ATDT<phone number>!7<tone pulse digits 0-9, B- F><CR> Result codes after dialing t Dial tone detected , Phone number dialed—start intermessage time r Ringback tone detected b Busy ...

Page 36

Si2400 6.5.7. Intermessage Timing Intermessage timing is accomplished in three ways, relative to the end of the previous message (“,” result code), relative to the Kissoff Tone (“K” result code) or relative to the Kissoff timeout (“^” result code). If ...

Page 37

Modem Result Codes and Call Progress Table 20 shows the modem result codes which can be used in call progress monitoring. All result codes are a single character to speed up communication and ease host processing. Table 20. Modem ...

Page 38

Si2400 be programmed to search for individual tones. The four detectors have center frequencies which can be set by registers UDFD1–4 (see Table 24). (SE5[6] [TDET] [SE8 = 0x02] Read Only Definition) can be monitored, along with TONE, to detect ...

Page 39

At this point, users may program their own algorithm to monitor the detected tones. If the host wishes to dial, it should blind dialing, setting the dial timeout S01 (DW seconds, “ATDT<Phone Number><CR>;” command. This ...

Page 40

Si2400 7. Low Level DSP Control Although not necessary for most applications, the DSP low-level control functions are available for users with very specific applications requiring direct DSP control. 7.1. DSP Registers Several DSP registers are accessible through the Si2400 ...

Page 41

Table 24. Low-Level DSP Parameters (Continued) Name DSP Reg. Addr. 0x000E UDFSL Sensitivity setting for UDFD1–4 detectors, default = –43 dBm 0x0024 CONL Carrier ON level. Carrier is valid once it reaches this level. 0x0025 COFL Carrier OFF level. Carrier ...

Page 42

Si2400 7.2. Call Progress Filters The programmable call progress filter coefficients are located in DSP address locations 0x0010 through 0x0023. There are two independent 4th order filters A and B, each consisting of two biquads, for a total of 20 ...

Page 43

S Registers Any register not documented here is reserved and should not be written. Bold selection in bit-mapped registers indicate default values. “S” Register Name Register Address (hex) S00 0x00 NR S01 0x01 DW S02 0x02 CW S03 0x03 ...

Page 44

Si2400 Table 27. S-Register Summary (Continued) “S” Register Name Register Address (hex) S17 0x17 BTOF S18 0x18 BTOD S19 0x19 RTON S1A 0x1A RTOF S1B 0x1B RTOD S1C 0x1C DTT S1D 0x1D DTMFD DTMF detect time. The time that a ...

Page 45

Table 27. S-Register Summary (Continued) “S” Register Name Register Address (hex) S26 0x26 VTSO S27 0x27 VTSOL S28 0x28 VTSOH V.22bis 2400 bps scrambled ones length high. Minimum length S29 0x29 IS S2A 0x2A RSO S2B 0x2B DTL S2C 0x2C ...

Page 46

Si2400 Table 27. S-Register Summary (Continued) “S” Register Name Register Address (hex) S30 0x30 FCDH S31 0x31 RATL S32 0x32 OCDT S33 0x33 MDMO S34 0x34 TASL S35 0x35 RSOL S36 0x36 SKDTL S37 0x37 CDR S38 0x38 ARM2 S39 ...

Page 47

Table 27. S-Register Summary (Continued) “S” Register Name Register Address (hex) SDF 0xDF DGSR SE0 0xE0 CF1 SE1 0xE1 CLK1 SE2 0xE2 GPIO SE3 0xE3 GPD SE4 0xE4 CF5 SE5 0xE5 DADL SE5 0xE5 DDL SE5 0xE5 DSP1 SE5 0xE5 ...

Page 48

Si2400 Table 28. Bit Mapped Register Summary “S” Register Register Register Address Name (hex) S07 0x07 MF1 HDEN S0C 0x0C MF2 S11 0x11 ONHI S12 0x12 OFHI S13 0x13 MF3 S14 0x14 MF4 MRCD S15 0x15 MLC ATPRE S1F 0x1F ...

Page 49

Table 28. Bit Mapped Register Summary (Continued) “S” Register Register Bit 7 Register Address Name (hex) SEB 0xEB TPD SF0 0xF0 DAA0 SF1 0xF1 DAA1 BTE SF2 0xF2 DAA2 SF4 0xF4 DAA4 SQLH SF5 0xF5 DAA5 FULL SF6 0xF6 DAA6 ...

Page 50

Si2400 S07 (MF1). Modem Functions 1 Bit Name HDEN BD V23R Type R/W R/W R/W Reset settings = 0000_0001 (0x01) b Bit Name 7 HDEN HDLC Framing Disable Enable Blind Dialing. ...

Page 51

S0C (MF2). Modem Functions 2 Bit Name CDE CIDM Type R/W R/W Reset settings = 0000_0000 (0x00) b Bit Name CDE 7 Carrier Detect Enable Disable Enable GPI02 as an active low carrier ...

Page 52

Si2400 S11 (ONHI). On-Hook Intrusion Bit Name DVL Type R/W Reset settings = 0100_1000 (0x48) b Bit Name 7:5 DVL Differential Voltage Level. Differential voltage level to detect intrusion event (2.75 V units.) 4:0 AVL Absolute Voltage ...

Page 53

S13 (MF3). Modem Functions 3 Bit Name JID BTID OFHE Type R/W R/W R/W Reset settings = 0001_0000 (0x10) b Bit Name 7 JID Japan Caller ID Disable Enable. 6 BTID BT Caller ...

Page 54

Si2400 S14 (MF4). Modem Functions 4 Bit Name MRCD UDF TEO Type R/W R/W R/W Reset settings = 0000_0000 (0x00) b Bit Name 7 MRCD Disable Modem Result Codes. (See S62 also Enables the following ...

Page 55

S15 (MLC). Modem Link Control Bit Name ATPRE VCTE FHGE Type R/W R/W R/W Reset settings = 1000_0100 (0x84) b Bit Name 7 ATPRE Answer Tone Phase Reversal Disable Enable answer tone phase ...

Page 56

Si2400 S1F (ARM3). Alarm 3 (!7 Mode Only) Bit Name KOT Type R/W Reset settings = 0010_1101 (0x2D) b Bit Name 7:5 KOT Kissoff Timeout units. Maximum 7 s. 4:0 IMT Intermessage Timing. 500 ms ...

Page 57

S33 (MDMO). Modem Override Bit Name DON DOF Type R/W R/W Reset settings = 1000_0000 (0x80) b Bit Name 7 Reserved Read returns one. 6 DON On-Hook Intrusion Detect Enable Disable*. 5 DOF ...

Page 58

Si2400 S36 (ARM1). Alarm 1 (!7 Mode Only) Bit Name POF PON Type R/W Reset settings = 0011_0000 (0x30) b Bit Name 7:6 POF Pulse Off Time ms ms ...

Page 59

S38 (ARM2). Alarm 2 (!7 Mode Only) Bit Name DBD DCF Type R/W R/W Reset settings = 0011_1000 (0x38) b Bit Name 7 DBD Delay Before Data. Time the Si2400 waits prior to transmitting data, relative to ...

Page 60

Si2400 S3C (CIDG). Caller ID Gain Bit Name Type Reset settings = 0000_0100 (0x04) b Bit Name 7:3 Reserved Read returns 0. 2:0 CIDG Caller ID Gain. The Si2400 dynamically sets the On-Hook Analog Receive Gain SF4[6:4] ...

Page 61

S62 (RC). Result Codes Override Bit Name CLD OCR LLC Type R/W R/W R/W Reset settings = 0000_0000 (0x00) b Bit Name 7 CLD Carrier Loss Detector Default Caller ID sensitivity can be ...

Page 62

Si2400 S82 (IST). Intrusion Bit Name IST Type R/W Reset settings = 0000_0000 (0x00) b Bit Name 7:4 IST Intrusion Settling Time. 0000 = IST equals 1 second. Delay between when the ISOmodem goes off-hook and the ...

Page 63

SE0 (CF1). Chip Functions 1 Bit Name ICTS Type R/W Reset settings = 0010_0010 (0x22) b Bit Name 7:6 Reserved Read returns zero. 5 ICTS Invert CTS pin Inverted (CTS Normal (CTS). 4 ...

Page 64

Si2400 SE1 (CLK1). Clock 1 Bit Name MCKR Type R/W Reset settings = 0000_0111 (0x07) b Bit Name 7:6 MCKR Microcontroller Clock Rate Fastest 9.8304 MHz 4.9152 MHz 2.4576 MHz. 3 ...

Page 65

SE2 (GPIO). General Purpose Input/Output Bit Name GPIO4 GPIO3 Type R/W Reset settings = 0000_0000 (0x00) b Bit Name 7:6 GPIO4 GPIO4 Digital input Digital output (relay drive Analog input. 11 ...

Page 66

Si2400 SE3 (GPD). GPIO Data Bit Name AING Type R/W Reset settings = 0000_0000 (0x00) b Bit Name 7:6 AING AIN Gain Bits 2 ...

Page 67

SE4 (CF5). Chip Functions 5 Bit Name NBCK SBCK Type R R Reset settings = 0000_0000 (0x00) b Bit Name 7 NBCK 9600 Baud Clock (Read Only). 6 SBCK 600 Baud Clock (Read Only). 5:4 DRT Data ...

Page 68

Si2400 SE5 (DSP1). (SE8 = 0x02) Read Only Definition Bit Name DDAV TDET Type R R Reset settings = 0000_0000 (0x00) b Bit Name 7 DDAV DSP Data Available. 6 TDET Tone Detected. Indicates a TONE (any ...

Page 69

SE5 (DSP2). (SE8 = 0x02) Write Only Definition Bit Name DTM Type Reset settings = 0000_0000 (0x00) b Bit Name 7 Reserved Always write zero. 6:3 DTM DTMF tone (0–15) to transmit when selected by TONC = ...

Page 70

Si2400 SE6 (DSP3). (SE8 = 0x02) Write Only Definition Bit Name CPSQ CPCD Type W W Reset settings = 0000_0000 (0x00) b Bit Name 7 CPSQ 0 = Disable Enables a squaring function on the ...

Page 71

... See Register F7 on page 76 for LM0. 2. Under normal operation, the Si2400 internal microcontroller will automatically set these bits appropriately R/W Function 1,2 LM0 Line Status Mode 0 1 On-hook 1 1 On-hook line monitor mode (Si3015 compatible Off-hook Rev. 1.3 Si2400 D0 OFHK R/W 71 ...

Page 72

... R/W R/W Reset settings = 0001_1100 (0x1C) b Bit Name 7 BTE Billing Tone Enable. When the Si3015 detects a billing tone, SF9[3] (BTD) is set Disable Enable. 6 PDN Power Down Normal operation Powers down the Si2400. 5 PDL Power Down Line-Side Chip (typically only used for board level debug Normal operation ...

Page 73

SF4 (DAA4). DAA Low Level Functions 4 Bit Name SQLH ARG Type R/W R/W Reset settings = 0000_1111 (0x0F) b Bit Name 7 SQLH Ring Squelch. If the host implements a manual ring detect (bypassing the Si2400 ...

Page 74

... Full Scale Si3015 ADC/DAC full scale > –1 dBm Si3015 ADC/DAC full scale > 3.2 dBm. This bit changes the full scale of the ADC and DAC from –1 dBm min. to 3.2 dBm min. In order to use this bit, the R2 resistor must be changed from 402 Ω to 243 Ω and ACT (SF5, bit 4) must be set to 0 ...

Page 75

SF6 (DAA6). DAA Low Level Functions 6 Bit Name Type Reset settings = 0000_0000 (0x00) b Bit Name 7:4 Reserved Read returns zero. 3 FJM Force Japan DC Termination Normal mode Force Japan ...

Page 76

... Read returns zero. SF8 (DAA8). DAA Low Level Functions 8 Bit Name LRV Type R Bit Name 7:4 LRV Line-Side Chip Revision Number. 1001 = Si3015 Rev A 1010 = Si3015 Rev B 1011 = Si3015 Rev C 1100 = Si3015 Rev D 3:0 Reserved Read returns indeterministic LM0 LIM R/W R/W Function Function Rev ...

Page 77

SF9 (DAA9). DAA Low Level Functions 9 Read Only Bit Name OVL Type R Reset settings = 0010_0000 (0x20) b Bit Name 7 Reserved Read returns zero. 6 OVL Receive Overload (see “Appendix A—DAA Operation”). Same as ...

Page 78

... Si2400 modem. When bypassing the on-chip controller, the low-level DAA functions of the Si3015 described in this section can be controlled through S registers. DAA Isolation Barrier The Si2400 chipset consists of the Si3015 line-side device and the Si2400 modem device ...

Page 79

DC Termination The Si2400 has four programmable dc termination modes which are selected with SF5[3:2] (DCT). FCC mode (DCT = 10 ), shown in Figure 14, is the b default dc termination mode and supports a transmit full scale level ...

Page 80

... Australia, New Zealand, South Africa, CTR21 and some European NET4 countries such as the UK and Germany. This complex impedance is set by circuitry internal to the Si2400 chipset as well as the network connected to the Si3015 REXT2 pin. Ringer Impedance The ring detector in a typical DAA is ac coupled to the line with a large, 1 µ ...

Page 81

... Billing Tone Filter (Optional) In order to operate without degradation during billing tones in Germany, Switzerland, and South Africa, an external LC notch filter is required. (The Si3015 can remain off-hook during a billing tone event, but modem data will be lost [or a modem disconnect or retrain may occur] in the presence of large billing tone signals.) The notch filter design requires two notches, one at 12 KHz and one at 16 KHz ...

Page 82

... Another method is to read SF8[7:4] (LRV) to verify the Si3015 is properly sending its version number back to the Si2400. Finally, the voltage between the Si3015 VREG pin and the IGND pin may be measured and must exceed 3.6 V. Once the clock, UART, and isolation link have been ...

Page 83

Compliance Test Commands The following are compliance test commands: ATS07=4ODT off hook ATSE8=05\r // place DSP in mode 5 (for QAM and DPSK) ATSE5=xx\r // see notes below for setting xx Writes to the ATSE5 register has the ...

Page 84

Si2400 T A B— YPICAL PPENDIX Introduction Appendix B outlines the steps required to configure the Si2400 for modem operation under typical examples. The ISOmodem has been designed to be both easy to use and flexible. The Si2400 has many ...

Page 85

A C—UL1950 3 PPENDIX Designs using the Si2400 pass all overcurrent and overvoltage tests for UL1950 3rd Edition compliance with a couple of considerations. Figure 20 shows the designs that can pass the UL1950 overvoltage tests, as well as electromagnetic ...

Page 86

Si2400 9. Pin Descriptions: Si2400 Pin # Pin Name 1 XTALI XTALI — Crystal Oscillator Pin. These pins provide support for parallel resonant, AT cut crystals. XTALI also acts as an input in the event that an external clock source ...

Page 87

Pin # Pin Name 10 GPIO4 General Purpose Input/Output 4. This pin can be either a GPIO pin (analog in, digital in, digital out) or the ALERT pin. Default is digital in. When programmed as ALERT, this pin provides five ...

Page 88

... Si2400 10. Pin Descriptions: Si3015 Pin # Pin Name 1 QE2 Transistor Emitter 2. Connects to the emitter of Q4. 2 DCT DC Termination. Provides dc termination to the telephone network 3 IGND Isolated Ground. Connects to ground on the line-side interface. Also connects to capacitor C2. 4 C1B Isolation Capacitor 1B. Connects to one side of isolation capacitor C1. ...

Page 89

Table 30. 3015 Pin Descriptions (Continued) Pin # Pin Name 14 RX Receive Input. Serves as the receive side input from the telephone network. 15 FILT Filter. Provides filtering for the dc termination circuits. 16 FILT2 Filter 2. Provides filtering ...

Page 90

... Si2400 11. Ordering Guide Chipset Region Si2400 Global Si2400 Global Si2400 Global 90 System-Side Line-Side Pb-Free Si2400-KS Si3015-KS Si2400-BS Si3015-BS Si2400-FS Si3015-F-FS Rev. 1.3 Temp. Range °C No – °C Yes °C ...

Page 91

... Package Outline: 16-Pin SOIC Figure 21 illustrates the package details for the Si2400 and Si3015. Table 31 lists the values for the dimensions shown in the illustration aaa - Seating Plane Figure 21. 16-pin Small Outline Integrated Circuit (SOIC) Package Table 31. Package Diagram Dimensions E H bbb ...

Page 92

Si2400 OCUMENT HANGE IST Revision 1.1 to Revision 1.2 Table 3 on page 6, GPIO1– mA. Table 4 on page 6, GPIO1– mA. Table 5 on page 7, Caller ID Common ...

Page 93

N : OTES Rev. 1.3 Si2400 93 ...

Page 94

... Should Buyer purchase or use Silicon Laboratories products for any such unintended or unauthorized ap- plication, Buyer shall indemnify and hold Silicon Laboratories harmless against all claims and damages. Silicon Laboratories, Silicon Labs, and ISOmodem are trademarks of Silicon Laboratories Inc. Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders 94 Rev ...

Related keywords