Silicon Laboratories SI2494/39 Specifications

Rev. 1.0 7/11 Copyright © 2011 by Silicon Laboratories Si2494/39Ordering InformationThis data sheet is valid only for those chipset combinations liste

Si2494/3910 Rev. 1.0Figure 2. SPI Slave TimingFigure 3. Parallel Interface Read TimingSCLK*TSESSTCKHTCKLMOSITSISTSIHMISOTSDTSOHTSEZTSDZtCSHtCSStAStAHA

Si2494/39Rev. 1.0 11Figure 4. Parallel Interface Write TimingFigure 5. Parallel Interface Write Followed by Read TimingtCSHtCSStAStAHtWCtWLADDRESS = 0

Si2494/3912 Rev. 1.02. Typical Application SchematicBiasRing Detect/CID/Voltage monitoringHookswitchAdd 0.020 to 0.030 sq. inches of Cu at alltransis

Si2494/39Rev. 1.0 133. Bill of Materials: Si2494/39 ChipsetComponent Value Supplier(s)C1, C2 33 pF, Y2, X7R, ±20% Panasonic, Murata, VishayC3 10 nF,

Si2494/3914 Rev. 1.0Table 8. Protocol Characteristics Item SpecificationData Rate (downstream)56 kbps54.666 kbps53.333 kbps52 kbps50.666 kbps49.333 kb

Si2494/39Rev. 1.0 15Data Rate33.6 kbps31.2 kbps28.8 kbps26.4 kbps24.0 kbps21.6 kbps19.2 kbps16.8 kbps14.4 kbps12.0 kbps9600 bps7200 bps4800 bps2400 bp

Si2494/3916 Rev. 1.0Transmit CarrierV.92V.90V.34ITU-T V.32bisITU-T V.32ITU-T V.29ITU-T V.22, V.22bis/Bell 212AOriginate modeAnswer modeITU-T V.21Origi

Si2494/39Rev. 1.0 17Phone Types 500 (rotary dial), 2500 (DTMF dial)Dialing Pulse and ToneDTMF Output Level Per Part 68Pulse Dial Ratio Make/Break: 39/

Si2494/3918 Rev. 1.04. Functional DescriptionFigure 7. Functional Block DiagramThe Si2494/39 ISOmodem® is a complete embedded modem chipset with inte

Si2494/39Rev. 1.0 19This device is ideal for embedded modem applications due to its small board space, low power consumption, andglobal compliance. Th

Si2494/392 Rev. 1.0

Si2494/3920 Rev. 1.04.2. Command ModeUpon reset, the ISOmodem® is in command mode and accepts “AT” commands. An outgoing modem call can bemade using

Si2494/39Rev. 1.0 214.8. Low-Power ModesThe Si2494/39 provides multiple low power modes. Using the S24 S-register, the Si2494/39 can be set toautomat

Si2494/3922 Rev. 1.04.12. V.92 PCM UpstreamThe Si2494/39 supports the ITU-V.92 PCM upstream data protocol. This protocol allows the ISOmodem to conne

Si2494/39Rev. 1.0 234.15. Caller ID OperationThe Si2494/39 supports full type I and type II caller ID detection and decode. Caller ID is supported fo

Si2494/3924 Rev. 1.0Figure 9. Loop Current4.17. Overcurrent DetectionThe Si2494/39 includes an overcurrent detection feature that measures the loop c

Si2494/39Rev. 1.0 254.21. SMS/MMS SupportShort Message Service (SMS) is a service that allows text messages to be sent and received from one telephon

Si2494/3926 Rev. 1.04.26. EEPROM InterfaceThe Si2494/39 supports an optional serial peripheral interface (SPI) bus serial EEPROM Mode 3 with a 16-bit

Si2494/39Rev. 1.0 27Table 10. Basic AT Command Set (Command Defaults in Bold) Command Action$Display AT command mode settings.AAnswer incoming callA/R

Si2494/3928 Rev. 1.0H0Go on-hook (hang up modem).H1Go off-hook.InIdentification and checksum.I0Display Si2494/39 revision code.A: Revision AI1Display

Si2494/39Rev. 1.0 29VnResult code type (see Table 14 on page 49).V0Numeric result codes.V1Verbal result codesXnCall Progress Monitor (CPM)—This comman

Si2494/39Rev. 1.0 3TABLE OF CONTENTSSection Page1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Si2494/3930 Rev. 1.0*Y[sequence]Special Access Mode—This command enables special modes and data memory access.[sequence]Description254:Waaaa,dddd Writ

Si2494/39Rev. 1.0 31+DS44 Options+DS44 = A+DS44 = A,B+DS44 = A,B,CControls V.44 data compression function.A Direction0 No compression1 Transmit only2

Si2494/3932 Rev. 1.0+FRM = XClass 1 Receive Carrier for V.29 fast connect.XMode2 Transmit V.21 (980 Hz) tone for longer than 100 ms, then send answer

Si2494/39Rev. 1.0 33+GCI = XCountry settings - Automatically configure all registers for a particular country.XCountry0Japan9 AustraliaAAustriaF Belgi

Si2494/3934 Rev. 1.0+IFC Options+IFC = A+IFC = A,BSpecifies the flow control to be implemented.A Specifies the flow control method used by the host to

Si2494/39Rev. 1.0 35+MS Options+MS = A+MS = A,B+MS = A,B,C+MS = A,B,C,D+MS = A,B,C,D,E+MS = A,B,C,D,E,FModulation Selection.A Preferred modem carrierV

Si2494/3936 Rev. 1.0+PMHR=XInitiate MOH. Requests the DCE to initiate or to confirm a MOH procedure. Valid only if MOH is enabled.X Mode0 V.92 MOH re

Si2494/39Rev. 1.0 37+VCDT = XCaller ID Type.XMode0 After ring only1 Always on (Recommended Setting)2UK3Japan+VCID = XCaller ID Enable.XMode0Off1 On—fo

Si2494/3938 Rev. 1.0+VLS = n Analog Source / Destination Select.n Description 0 ISOmodem on-hook. AOUT disabled. Tone detectors disabled. Si3000 samp

Si2494/39Rev. 1.0 39+VRX Receive Voice Stream.Enable DTE receive of voice stream. The DCE will return a CONNECT response followed by the voice stream

Si2494/394 Rev. 1.011. Package Outline: 38-Pin QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6312. 38-

Si2494/3940 Rev. 1.0+VTS = [<freq1>, <freq2>, <dur>]DTMF and Tone Generation.This command can be used to produce DTMF tones, single-

Si2494/39Rev. 1.0 414.28. Extended AT CommandsThe extended AT commands are supported by the Si2494/39 and are described in Tables 11 through 13.Table

Si2494/3942 Rev. 1.0&H2V.34 with automatic fallback (33.6 kbps to 300 bps)&H3V.34 only (33.6 kbps to 2400 bps)&H4ITU-T V.32bis with automa

Si2494/39Rev. 1.0 43&XnAutomatic determination of telephone line type.&X0Abort &x1 or &x2 command.&X1Automatic determination of te

Si2494/3944 Rev. 1.0Table 12. Extended AT% Command Set (Command Defaults in Bold) Command Action%$ Display AT% command settings.%B Report blacklist. S

Si2494/39Rev. 1.0 45%V2 Automatic Line Status Detection—Adaptive Method.Description: Before going off-hook with the ATD, ATO, or ATA commands, the Si2

Si2494/3946 Rev. 1.0Table 13. Extended AT\ Command Set (Command Defaults in Bold) Command Action\$ Display AT\ command settings.\Bn Character length w

Si2494/39Rev. 1.0 47\Q3 Use RTS/CTS\Q4 Use XON/XOFF flow control for modem-to-DTE interface. Does not enable modem-to-modem flow control.\Tn DTE rate—

Si2494/3948 Rev. 1.0\U Serial mode—causes a low pulse (25 ms) on RI and DCD. INT to be the inverse of ESC. RTS to be inverse of CTS.Parallel mode—caus

Si2494/39Rev. 1.0 49Table 14. Result CodesNumeric Meaning Verbal Response X0 X1 X2 X3 X4 X50 Command was successful OK X X X X X X1 Link established

Si2494/39Rev. 1.0 51. Electrical SpecificationsFigure 1. Test Circuit for Loop CharacteristicsTable 1. Recommended Operating ConditionsParameter1Sym

Si2494/3950 Rev. 1.045 A polarity reversal was NOT detectedNO POLARITY REVERSAL (enabled via G modifier)XXXXXX52 Link established at 56000 CONNECT 560

Si2494/39Rev. 1.0 515. S-RegistersThe S command allows reading (Sn?) or writing (Sn = x) the S-registers. The S-registers store values for functionst

Si2494/3952 Rev. 1.024 Sleep Inactivity Time—Sets the time that the modem operates in normal power mode with no activity on the serial port, parallel

Si2494/39Rev. 1.0 5342 Blacklisting—The Si2494/39 will not dial the same number more than two times in three minutes. An attempt to dial a third time

Si2494/3954 Rev. 1.06. User-Access Registers (U-Registers)U-Registers are 16-bit registers written by the AT:Uaa command and read by the AT:R (read a

Si2494/39Rev. 1.0 557. Pin Descriptions: Si2494/39Table 16. Si2494/39 Pin DescriptionsPin # Pin Name Description1GPIO1General Purpose Input Output #1

Si2494/3956 Rev. 1.012 EECS EEPROM Chip Select.Active low read/write enable for SPI EEPROM.13 EECLK EEPROM Clock.Clock for SPI EEPROM.14 AOUTb Audio O

Si2494/39Rev. 1.0 5728 DCD, D6 Carrier Detect/Data Bit.Active low carrier detect in serial mode. Bidirectional parallel bus data bit 6 in par-allel mo

Si2494/3958 Rev. 1.08. Pin Descriptions: Si3018Table 17. Si3018 Pin DescriptionsPin # Pin Name Description1QETransistor Emitter.Connects to the emitt

Si2494/39Rev. 1.0 599. Ordering GuideChipset Max Speed System-Side PackageSystem-Side Line-Side Temp RangeSi2494 56 kbps 38 QFN Si2494-A-FM Si3018-F

Si2494/396 Rev. 1.0Table 3. AC Characteristics (VD= 3.0 to 3.6 V, TA = 0 to 70 °C for F-grade, Fs = 8 kHz, TA= –40 to 85 °C for G-grade)Parameter Symb

Si2494/3960 Rev. 1.010. Package Markings (Top Markings)10.1. Si2494 Top MarkingFigure 10. Si2494-A-FM Top MarkingFigure 11. Si2494-A-GM Top Marking1

Si2494/39Rev. 1.0 61Figure 13. Si2439-A-GM10.3. Si2494/39 Top Markings ExplanationMark Method: YAG LaserLine 1 Marking: Part NumberLine 2 Marking: YY

Si2494/3962 Rev. 1.010.4. Si3018 Top MarkingFigure 14. Si3018-F-FS Top MarkingFigure 15. Si3018-F-GS Top Marking10.5. Si3018 Top Markings Explanatio

Si2494/39Rev. 1.0 6311. Package Outline: 38-Pin QFNFigure 16 illustrates the package details for the Si2494/39. Table 18 lists the values for the dim

Si2494/3964 Rev. 1.0Table 18. Package Diagram Dimensions1,2,3SymbolMillimetersMin Nom MaxA 0.75 0.85 0.95A1 0.00 0.01 0.05b 0.18 0.23 0.30D5.00 BSC.D2

Si2494/39Rev. 1.0 6512. 38-Pin QFN Land PatternFigure 17 shows the recommended land pattern for the Si2494/39 QFN-38 package. Table 19 lists the valu

Si2494/3966 Rev. 1.013. Package Outline: 16-Pin SOICFigure 18 illustrates the package details for the Si3018 16-pin packaging option. Table 20 lists

Si2494/39Rev. 1.0 67Table 20. Package Diagram DimensionsDimension Min MaxA — 1.75A1 0.10 0.25A2 1.25 —b 0.31 0.51c 0.17 0.25D 9.90 BSCE 6.00 BSCE1 3.9

Si2494/3968 Rev. 1.014. 16-Pin SOIC Land PatternFigure 19 illustrates the recommended land pattern for the Si2494/39 16-Pin SOIC. Table 21 lists the

Si2494/39Rev. 1.0 69NOTES:

Si2494/39Rev. 1.0 7Table 4. Loop Characteristics(VD= 3.0 to 3.6 V, TA= 0 to 70 °C for F-grade, TA= –40 to 85 °C for G-grade)Parameter Symbol Test Cond

Si2494/3970 Rev. 1.0CONTACT INFORMATIONSilicon Laboratories Inc.400 West Cesar ChavezAustin, TX 78701Tel: 1+(512) 416-8500Fax: 1+(512) 416-9669Toll Fr

Si2494/398 Rev. 1.0Table 5. Switching Characteristics1(VD= 3.0 to 3.6 V, TA= 0 to 70 °C for F-grade, TA= –40 to 85 °C for G-grade)Parameter Symbol Min

Si2494/39Rev. 1.0 9SCLK cycle time tSCK224 — — nsInactive time between SS actives tNSS_INACT81——nsTable 6. Thermal ConditionsParameter Symbol Test Con