Silicon Laboratories Si2404 Spécifications

Preliminary Rev. 0.91 6/04 Copyright © 2004 by Silicon Laboratories Si2404This information applies to a product under development. Its characteristics

Si240410 Rev. 0.91Typical Application SchematicEECLK/D5DCD_/D4ESC/D3AOUT/INT_TXD/WR_RESET_RXD/RD_CTS_/CS_D6INT_/D0RI_/D1EESD/D2CLKOUT/EECS_/A0RTS_/D7V

Si2404Rev. 0.91 11Bill of Materials: Si2404 ChipsetComponent Value Supplier(s)C1, C2 33 pF, Y2, X7R, ±20% Panasonic, Murata, VishayC3 10 nF, 250 V, X7

Si240412 Rev. 0.91Table 7. Protocol Characteristics Item SpecificationData Rate2400 bps1200 bps300 bps300 bpsITU-T V.22bisITU-T V.22bis, V.23, or Bell

Si2404Rev. 0.91 13Carrier Detect (level for ITU-T V.22bis, V.22, V.21, 212, 103) in Switched NetworkAcquisition (–43 dBm)Release (–48 dBm)Hysteresis 2

Si240414 Rev. 0.91Functional DescriptionThe Si2404 ISOmodem® is a complete embeddedmodem chipset with integrated direct accessarrangement (DAA) that p

Si2404Rev. 0.91 15Parallel InterfaceThe parallel interface is an 8-bit data bus with a singlebit address. Figure 3 on page 9 shows the requiredtiming

Si240416 Rev. 0.91Caller ID OperationThe Si2404 supports full type I and type II caller IDdetection and decode. Caller ID is supported for the USBellc

Si2404Rev. 0.91 17Figure 6. Loop CurrentOvercurrent DetectionThe Si2404 includes an overcurrent detection featurethat measures the loop current at a p

Si240418 Rev. 0.91AT CommandsAt powerup, the Si2404 is in the AT command mode. In command mode, the modem monitors the input (serial orparallel) check

Si2404Rev. 0.91 19En Local DTE echoE0 DisableE1 EnableHn Hook switch.H0 Go on-hook (hang up modem).H1 Go off-hook.In Identification and checksum.I0 Di

Si24042 Rev. 0.91

Si240420 Rev. 0.91S$ List contents of all S registers.Sn? Display contents of S-register n.Sn=x Set S-register n to value x (where n and x are decimal

Si2404Rev. 0.91 21:U User-Access Register Write—This command allows the user to write to the 16-bit user-access registers. (See page 37.) The format i

Si240422 Rev. 0.91+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 optionsA

Si2404Rev. 0.91 23+GCI = X Country settings - Automatically configure all registers for a particular country.XCountry0Japan9 AustraliaAAustriaF Belgiu

Si240424 Rev. 0.91+GCI = ? List all possible country code settings.+IFC Options+IFC = A+IFC = A,BSpecifies the flow control to be implemented.A Specif

Si2404Rev. 0.91 25+VCDT = X Caller ID Type.XMode0 After ring only1 Always on2UK3Japan+VCID = X Caller ID Enable.XMode0Off1 On—formatted2 On—raw data f

Si240426 Rev. 0.91Extended AT CommandsThe extended AT commands are supported by the Si2404 and are described in Tables 10 through 12.Table 10. Extende

Si2404Rev. 0.91 27&T4Initiate transmit as originating modem with automatic data generation. Modulation, data rate, and symbol rate are set by &

Si240428 Rev. 0.91%C3 Enable V.42bis in receive path only.%On Answer mode.%O1 Si2404 will auto-answer a call in answer mode.%O2 Si2404 will auto-answe

Si2404Rev. 0.91 29Table 12. Extended AT\ Command Set (Command Defaults in Bold) Command Action\$ Display AT\ command settings.\Bn Character length wil

Si2404Rev. 0.91 3TABLE OF CONTENTSSection PageElectrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Si240430 Rev. 0.91\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—Ch

Si2404Rev. 0.91 31\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—causes

Si240432 Rev. 0.91Table 13. Result CodesNumeric1Meaning Verbal Response X0 X1 X2 X3 X4 X50 Command was successful OK X X X X X X1 Link established at

Si2404Rev. 0.91 33The connect messages shown in Table 13 are sent when link negotiation is complete.82 MNP4 protocol PROTOCOL: ALTERNATE, + CLASS 4Set

Si240434 Rev. 0.91S-RegistersThe S command allows reading (Sn?) or writing (Sn = x) the S-registers. The S-registers store values for functionsthat ty

Si2404Rev. 0.91 3524 Sleep Inactivity Time—Sets the time that the modem operates in normal power mode with no activity on the serial port, parallel po

Si240436 Rev. 0.9150 Minimum on-hook time—Modem will remain on-hook for S50 seconds. Any attempt to go off-hook will be delayed until this timer expir

Si2404Rev. 0.91 37User-Access Registers (U-Registers)The :U AT command is used to write these 16-bit U-registers, and the :R command is used to read t

Si240438 Rev. 0.91U17 BT1A0 BT1 registers set the coefficients for stage 1 of the Busy Tone Detect filter. Default is for FCC countries. See “AN93: Mo

Si2404Rev. 0.91 39U33 RMOT Ringback cadence minimum on time in seconds multiplied by 7200. 0x1200U34 DTWD Window to look for dialtone in seconds multi

Si24044 Rev. 0.91Electrical SpecificationsTable 1. Recommended Operating ConditionsParameter1Symbol Test ConditionMin2TypMax2UnitAmbient Temperature T

Si240440 Rev. 0.91U4F FHT Flash Hook Time. Time corresponding with “!” or “&” dial modifier that the Si2404 goes on-hook during a flash hook (ms u

Si2404Rev. 0.91 41U9F SASF SAS frequency detection. See “AN93: Modem Designer’s Guide” for complete details.0x0000UA0 SC0 SAS cadence 0. Sets the dura

Si240442 Rev. 0.91Table 16. Bit-Mapped U-Register SummaryReg. Name Bit 15Bit 14Bit 13Bit 12Bit 11Bit 10Bit 9Bit 8Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bi

Si2404Rev. 0.91 43Bit-Mapped U-Register Detail (defaults in bold)Reset settings = 0x0000U4D MOD1Bit D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1

Si240444 Rev. 0.91Reset settings = 0x0000Reset settings = 0x0804U53 MOD2BitD15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0NameREVTypeR/WBit Name Function15 REV

Si2404Rev. 0.91 45Reset settings = 0x0003Reset settings = 0x00E0U63 DAAC3BitD15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0NameLCS[7:0] ACT[3:0]Type R/WBit Nam

Si240446 Rev. 0.91Reset settings = 0x0040U66 DAAC5BitD15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0Name FDTType RBit Name Function15:7 Reserved Read returns z

Si2404Rev. 0.91 47Reset settings = 0x0008U67 ITC1BitD15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0Name MINI[1:0] ILIM DCR OHS DCV[1:0] RZ RTType R/W R/W R/W R

Si240448 Rev. 0.91Reset settings = 0x00001RZRinger Impedance.0 = Maximum (high) ringer impedance.1 = Synthesize ringer impedance. C15, R14, Z2, and Z3

Si2404Rev. 0.91 49Reset settings = N/AReset settings = 0x0000U6A ITC4BitD15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0Name OVLType RBit Name Function15:3 Rese

Si2404Rev. 0.91 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 for K-G

Si240450 Rev. 0.91Reset settings = 0x1F20Reset settings = 0x00FFU6E CK1BitD15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0Name R1[4:0]Type R/WBit Name Function1

Si2404Rev. 0.91 51Reset settings = 0x2700U70 IO0Bit D15D14D13D12D11D10D9 D8 D7D6D5D4D3D2D1D0NameHES TES CIDM OCDM PPDM RIM DCDM 0 CID OCD PPD RI DCDTy

Si240452 Rev. 0.91Reset settings = 0x0000Reset settings = 0x3240U71 IO1Bit D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0Name COMP PRTType R/W

Si2404Rev. 0.91 53Reset settings = 0x401EU77 GEN2Bit D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0Name IST[3:0] HOI AOC OHT[8:0]Type R/W R/W R/W R/WBit Name

Si240454 Rev. 0.91Reset settings = 0x0000U78 GEN3Bit D15D14D13D12D11D10D9 D8D7D6D5D4D3D2D1D0Name IB[1:0] IS[7:0]Type R/W R/WBit Name Function15:14 IB[

Si2404Rev. 0.91 55Reset settings = 0x0000U79 GEN4Bit D15D14D13D12D11D10D9 D8 D7D6D5D4D3D2D1D0Name LVCS[4:0]Type RBit Name Function15:5 ReservedRead re

Si240456 Rev. 0.91Reset settings = 0x0000U7A GENABitD15D14D13D12D11D10D9D8D7D6D5D4D3 D2 D1 D0Name DOP ADD V22HD HDLC FASTType R/W R/W R/W R/W R/WBit N

Si2404Rev. 0.91 57Reset settings = 0x0000Reset settings = 0x0000U7C GENCBit D15D14D13D12D11D10D9D8D7D6D5 D4 D3 D2 D1 D0Name RIGPO RIGPOENType R R/WBit

Si240458 Rev. 0.91Reset settings = 0x0000U87 SAMBit D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0Name MINT SERM FSMS XMTT[7:0]Type R/W R/W R/W

Si2404Rev. 0.91 59Parallel Interface RegistersReset settings = 0x00Parallel Interface 0 (0x00)BitD7D6D5D4D3D2D1D0Name TX/RX[7:0]Type R/WBit Name Funct

Si24046 Rev. 0.91Table 4. AC Characteristics (VD= 3.0 to 3.6 V, TA = 0 to 70 °C for K-Grade, Fs = 8 kHz)Parameter Symbol Test Condition Min Typ Max Un

Si240460 Rev. 0.91Reset settings = 0110_0011Parallel Interface 1 (0x01)BitD7D6D5 D4 D3 D2D1D0Name RXF TXE REM INTM INT ESC RTSCTSType R R R R/W R R/W

Si2404Rev. 0.91 61Pin Descriptions: Si2404Table 17. Si2404 Pin DescriptionsPin # Pin Name Description1 CLKIN/XTALI Clock Input/Crystal Oscillator Pin.

Si240462 Rev. 0.919RXD/RDReceive Data/Read Enable.Data output to DTE RXD pin in serial mode. Active low read enable pin in parallel mode.10 TXD/WRTran

Si2404Rev. 0.91 63Pin Descriptions: Si3010Table 18. Si3010 Pin DescriptionsPin # Pin Name Description1QETransistor Emitter.Connects to the emitter of

Si240464 Rev. 0.91Ordering GuideChipset Description Digital Line TemperatureSi2404 Commercial lead-free Si2404 Si3010-FS 0 to 70 °C

Si2404Rev. 0.91 65Package Outline: 24-Pin TSSOPFigure 7 illustrates the package details for the Si2404. Table 19 lists the values for the dimensions s

Si240466 Rev. 0.91Package Outline: 16-Pin SOICFigure 8 illustrates the package details for the Si3010. Table 20 lists the values for the dimensions sh

Si2404Rev. 0.91 67Document Change ListRevision 0.9 to Revision 0.91 Table 6, “Switching Characteristics,” on page 7: Updated CLKOUT frequency specif

Si240468 Rev. 0.91Contact InformationSilicon Laboratories Inc.4635 Boston LaneAustin, TX 78735Tel: 1+(512) 416-8500Fax: 1+(512) 416-9669Toll Free: 1+(

Si2404Rev. 0.91 7Table 5. Absolute Maximum RatingsParameter Symbol Value UnitDC Supply Voltage VD4.1 VInput Current, Si2404 Digital Input Pins IIN±10

Si24048 Rev. 0.91Figure 2. Asynchronous UART Serial Interface Timing Diagram UART Time for Modem Receive Path (8N1 Mode)UART Timing for Modem Transmit

Si2404Rev. 0.91 9Figure 3. Parallel Interface Read TimingFigure 4. Parallel Interface Write TimingtCSHtCSStAStAHADDRESS = 0 or 1tRLtRCtRLDDtDHtRLDDVAL