Rev. 1.3 12/10 Copyright © 2010 by Silicon Laboratories Si2457/34/15/04Ordering InformationThis data sheet is valid only for those chipset combination
Si2457/34/15/0410 Rev. 1.3Figure 5. Parallel Interface Write Followed by Read TimingADDRESS = 0 or 1tWDSUtDHVALID DATA VALID DATAD[7:0]WRRDA0CStWRCtRL
Si2457/34/15/04Rev. 1.3 112. Typical Application SchematicRTS_DCD_ESCINT_TXDRESET_RXDCTS_GPIOVDDRINGTIPRefer to AN93 Appendix A for layout guidelines
Si2457/34/15/0412 Rev. 1.3RTS_DCD_ESCINT_TXDRESET_RXDCTS_GPIOVDDRINGTIPRefer to AN93 Appendix A for layout guidelines.Please submit layout to Silicon
Si2457/34/15/04Rev. 1.3 133. Bill of Materials: Si2457/34/15/04 ChipsetComponent Value Supplier(s)C1, C2 33 pF, Y2, X7R, ±20% Panasonic, Murata, Vish
Si2457/34/15/0414 Rev. 1.3Table 7. Protocol CharacteristicsItem SpecificationData Rate56 kbps154.666 kbps153.333 kbps152 kbps150.666 kbps149.333 kbps1
Si2457/34/15/04Rev. 1.3 15Data FormatBit asynchronousSelectable 8, 9, 10, or 11 bits per character, which includes the start, stop, and parity bitsCom
Si2457/34/15/0416 Rev. 1.3Receive CarrierITU-T V.901ITU-T V.342ITU-T V.32bis3ITU-T V.323ITU-T V.293ITU-T V.22, V.22bis/Bell 212AOriginate modeAnswer m
Si2457/34/15/04Rev. 1.3 174. Functional DescriptionFigure 8. Functional Block DiagramThe Si2457/34/15/04 ISOmodem® is a completeembedded modem chipse
Si2457/34/15/0418 Rev. 1.34.2. Command ModeUpon reset, the ISOmodem® is in command mode andaccepts “AT” commands. An outgoing modem call canbe made u
Si2457/34/15/04Rev. 1.3 194.11. Caller ID OperationThe Si2457/34/15/04 supports full type I and type IIcaller ID detection and decode. Caller ID is s
Si2457/34/15/042 Rev. 1.3
Si2457/34/15/0420 Rev. 1.3Figure 10. Loop Current0 3 6 9 12 15 18 21 24 30 33 36 39 42 4548 51 54 57 60 63 66 697214075 78 81 84 87 90 93Loop Current(
Si2457/34/15/04Rev. 1.3 214.13. Overcurrent DetectionThe Si2457/34/15/04 includes an overcurrent detectionfeature that measures the loop current at a
Si2457/34/15/0422 Rev. 1.3Table 8. Basic AT Command Set (Command Defaults in Bold) Command Action$Display AT command mode settings.AAnswer incoming ca
Si2457/34/15/04Rev. 1.3 23H0Go on-hook (hang up modem).H1Go off-hook.InIdentification and checksum.I0Display Si2457/34/15/04 revision code.B: Revision
Si2457/34/15/0424 Rev. 1.3Sn=xSet S-register n to value x (where n and x are decimal values).VnResult code type (see Table 12 on page 38).V0Numeric re
Si2457/34/15/04Rev. 1.3 25:UUser-Access Register Write—This command allows the user to write to the 16-bit user-access registers. (See page page 44.)
Si2457/34/15/0426 Rev. 1.3+ESA Options+ESA = A+ESA = A,B+ESA = A,B,C+ESA = A,B,C,E+ESA = A,B,C,E,F+ESA = A,B,C,E,F,GSynchronous access mode control op
Si2457/34/15/04Rev. 1.3 27+GCI = XCountry settings - Automatically configure all registers for a particular country.XCountry0 Japan9 AustraliaAAustria
Si2457/34/15/0428 Rev. 1.3+IFC Options+IFC = A+IFC = A,BSpecifies the flow control to be implemented.A Specifies the flow control method used by the h
Si2457/34/15/04Rev. 1.3 29+PCW = XControls the action to be taken upon detection of call waiting.X Mode0 Toggle RI and collect type II Caller ID if en
Si2457/34/15/04Rev. 1.3 3TABLE OF CONTENTSSection Page1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Si2457/34/15/0430 Rev. 1.34.21. Extended AT CommandsThe extended AT commands are supported by the Si2457/34/15/04 and are described in Tables 9 throu
Si2457/34/15/04Rev. 1.3 31&H4ITU-T V.32bis with automatic fallback (14.4 kbps to 300 bps) (default for Si2415)&H5ITU-T V.32bis only (14.4 kbps
Si2457/34/15/0432 Rev. 1.3&X1Automatic determination of telephone line type.Result code: WXYZnW: 0 = line supports DTMF dialing.1 = line is pulse
Si2457/34/15/04Rev. 1.3 33Table 10. Extended AT% Command Set (Command Defaults in Bold) Command Action%$ Display AT% command settings.%B Report blackl
Si2457/34/15/0434 Rev. 1.3%V2 Automatic Line Status Detection—Adaptive Method.Description: Before going off-hook with the ATD, ATO, or ATA commands, t
Si2457/34/15/04Rev. 1.3 35Table 11. Extended AT\ Command Set (Command Defaults in Bold) Command Action\$ Display AT\ command settings.\Bn Character le
Si2457/34/15/0436 Rev. 1.3\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
Si2457/34/15/04Rev. 1.3 37\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 mod
Si2457/34/15/0438 Rev. 1.3Table 12. Result CodesNumeric Meaning Verbal Response X0 X1 X2 X3 X4 X50 Command was successful OK X X X X X X1 Link establ
Si2457/34/15/04Rev. 1.3 3943 Telephone line is in use LINE IN USE (enabled via %Vn commands)XXXXXX44 A polarity reversal was detectedPOLARITY REVERSAL
Si2457/34/15/044 Rev. 1.31. Electrical SpecificationsTable 1. Recommended Operating ConditionsParameter1Symbol Test ConditionMin2TypMax2UnitAmbient
Si2457/34/15/0440 Rev. 1.399 Link established at 52000 CONNECT 520004XXXXX100 Link established at 53333 CONNECT 533333XXXXX101 Link established at 546
Si2457/34/15/04Rev. 1.3 415. S-RegistersThe S command allows reading (Sn?) or writing (Sn = x) the S-registers. The S-registers store values for func
Si2457/34/15/0442 Rev. 1.324 Sleep Inactivity Time—Sets the time that the modem operates in normal power mode with no activity on the serial port, par
Si2457/34/15/04Rev. 1.3 4342 Blacklisting—The Si2457/34/15/04 will not dial the same number more than two times in three minutes. An attempt to dial a
Si2457/34/15/0444 Rev. 1.36. User-Access Registers(U-Registers)U-Registers are 16-bit registers written by the AT:Uaacommand and read by the AT:R (re
Si2457/34/15/04Rev. 1.3 457. Pin Descriptions: Si2457/34/15/04 (16-Pin Option)Pin # Pin Name Description1CLKIN/XTALIXTALI—Crystal Oscillator Pin.Prov
Si2457/34/15/0446 Rev. 1.312 GND Ground.Connects to the system digital ground.13 VARegulator Voltage Reference.Connects to an external capacitor and s
Si2457/34/15/04Rev. 1.3 478. Pin Descriptions: Si2457/34/15/04 (24-Pin Option)Pin # Pin Name Description1CLKIN/XTALIClock Input/Crystal Oscillator Pi
Si2457/34/15/0448 Rev. 1.39 MISO/RXD/RD Master In Slave Out/Receive Data/Read Enable.Serial data output from modem in SPI mode. Data output to DTE RXD
Si2457/34/15/04Rev. 1.3 499. Pin Descriptions: Si3018/10Table 14. Si3018/10 Pin DescriptionsPin # Pin Name Description1QETransistor Emitter.Connects
Si2457/34/15/04Rev. 1.3 5Figure 1. Test Circuit for Loop CharacteristicsTable 3. DC Characteristics, VD= 3.0 to 3.6 V(VD= 3.0 to 3.6 V, TA= 0 to 70 °C
Si2457/34/15/0450 Rev. 1.310. Ordering GuideChipset Max Speed System-Side PackageSystem-Side* Line-Side* Temp RangeSi2457 56 kbps 24-pin TSSOP Si2457
Si2457/34/15/04Rev. 1.3 5111. Package Markings (Top Markings)Codes for the Si2457-D-FT, Si2457-D-FS, Si2434-D-FT, Si2434-D-FS, Si2415-D-FT, Si2415-D-
Si2457/34/15/0452 Rev. 1.311.4. Si2434-D-FS Top MarkingFigure 14. Si2434-D-FS Top Marking11.5. Si2415-D-FT Top MarkingFigure 15. Si2415-D-FT Top Mar
Si2457/34/15/04Rev. 1.3 5311.8. Si2404-D-FS Top MarkingFigure 18. Si2404-D-FS Top Marking11.9. Si3010-F-FS Top MarkingFigure 19. Si3010-F-FS Top Mar
Si2457/34/15/0454 Rev. 1.312. Package Outline: 24-Pin TSSOPFigure 21 illustrates the package details for the Si2457/34/15/04 24-pin packaging option.
Si2457/34/15/04Rev. 1.3 5513. 24-Pin TSSOP Land PatternFigure 22 illustrates the recommended land pattern for the Si2457/34/15/04 24-Pin TSSOP. Table
Si2457/34/15/0456 Rev. 1.314. Package Outline: 16-Pin SOICFigure 23 illustrates the package details for the Si2457/34/15/04 16-pin packaging option.
Si2457/34/15/04Rev. 1.3 57Table 17. 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 BSC
Si2457/34/15/0458 Rev. 1.315. 16-Pin SOIC Land PatternFigure 24 illustrates the recommended land pattern for the Si2457/34/15/04 16-Pin SOIC. Table 1
Si2457/34/15/04Rev. 1.3 59DOCUMENT CHANGE LISTRevision 0.91 to Revision 1.0 Added Figure 5 typical schematic with 16-pin system-side option. Updated
Si2457/34/15/046 Rev. 1.3Table 4. 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)Paramete
Si2457/34/15/0460 Rev. 1.3CONTACT INFORMATIONSilicon Laboratories Inc.400 West Cesar ChavezAustin, TX 78701Tel: 1+(512) 416-8500Fax: 1+(512) 416-9669T
Si2457/34/15/04Rev. 1.3 7Table 5. Absolute Maximum RatingsParameter Symbol Value UnitDC Supply Voltage VD4.1 VInput Current, Si2457/34/15/04 Digital I
Si2457/34/15/048 Rev. 1.3Figure 2. SPI Slave TimingRead Cycle Time tRC120 — — nsWrite to Read Cycle Time tWRC120 — — nsSerial Peripheral Interface (SP
Si2457/34/15/04Rev. 1.3 9Figure 3. Parallel Interface Read TimingFigure 4. Parallel Interface Write TimingtCSHtCSStAStAHADDRESS = 0 or 1tRLtRCtRLDDtDH
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