Introduction, 1.1Controllerless Modem Driver Overview | Intel 536EX

Introduction

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This developer’s manual describes the software interface for Intel® 536EX (controllerless and controller) chipset solutions. The controllerless-based solutions include the 536EP for PCI and Mini-PCI. Refer to the chipset datasheets for the detailed chipset descriptions (public order numbers 273503-001, 273xxx-001, 273xxx-001, 273xxx-001, and 273xxx-001).

The controllerless-based chipset, as the name implies, does not have a dedicated hardware controller. The controller functions are executed by the CPU. This developer’s manual includes the AT command sets for data, fax, and voice and the UART interface and emulation. Like the earlier solutions from Intel, the 536EX chipsets support a variety of applications without the need of additional firmware development. Note, the supported AT commands are firmware or driver version dependent.

1.1Controllerless Modem Driver Overview

1.1.1Windows* Millennium Edition (Windows Me), Windows 2000, Windows XP, and Windows NT* 4

The controllerless modem chipsets are integrated into the Microsoft* Windows* Me, Windows 2000, Windows XP, and Windows NT* 4 operating systems via proprietary Intel® Windows Driver Model (WDM) modem drivers. These drivers are fully plug and play capable and conform to all Microsoft WHQL certification requirements.

The functional block diagram in Figure 1 shows the common WDM architecture for the Microsoft’s operating systems supporting common WDM drivers model.

User-mode application, via special Windows API (FILE, TAPI, UNIMODEM), can access a virtual COM port provided by the Intel WDM driver. The data flow is converted inside the driver in accordance with some compression and a channel level protocol and passed to the DSP. The control flow follows the common Microsoft WDM driver model. The Intel WDM driver is installed as a stack of filter drivers below the system modem.sys driver.

536EX Chipset Developer’s Manual

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Intel Confidential

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Intel 536EX manual Introduction, 1.1Controllerless Modem Driver Overview, Intel Confidential

Contents

Developer’s Manual 536EX ChipsetJanuary 536EX Chipset Developer’s Manual Intel Confidential Contents Contents Figures Tables Description Revision HistoryDate Revision 1.1Controllerless Modem Driver Overview Introduction Kernel - ring0 Figure 1. WDM Driver Block Diagram1.1.2Windows 95 and Windows User applications 1.2V.90/V.92 and V.34 Data Modes Figure 2. VxD Mini Port Driver Block Diagram 1.3Modem Connection Overview Table 2. DCE-to-DCEData Rates for Each Mode Table 1. DTE-to-DCEData Rates for Each ModeTable 3. DCE-to-ISPData Rates for V.90 Mode Table 4. DTE-ModemData Rate Response Codes 1.4.1Sending Commands 1.4.3Dial Modifier 1.4.2AT Escape Sequences AT Command Summary Tables AT Command Summary TablesTable 5. Data Mode Command Summary Table 5. Data Mode Command Summary Continued Result code type 536EX Chipset Developer’s Manual Generate data mode calling tone Table 6. V.44/V.42/V.42 bis MNP Command Summary 536EX Chipset Developer’s Manual Table 8. Fax Class 1 Command Summary Table 7. Fax Identity Command Summary Table 10. Voice DTE→DCE Character Pairs Table 9. IS-101Voice Command Summary Table 11. Voice DTE←DCE Character Pairs Table 10. Voice DTE→DCE Character Pairs Continued Table 12. Dial Modifiers Table 11. Voice DTE←DCE Character Pairs ContinuedTable 13. S-RegisterSummary Table 13. S-RegisterSummary Continued Data Mode AT COMMANDS Data Mode AT COMMANDS •ATW2 Table 14. Data Reporting Wn MappingFigure 3. Example of a Remote Connection ATW0 Intel Confidential +FMFR?, +FMDL?, +FREV? 3.7Hanging Up Hn, S10, Zn, &D2 3.6Online Command Mode Escape Codes, On3.8Modem-to-ModemConnection Data Rates Intel Confidential +++AT +PMH=0+PCW=0 +VCID=1 Intel Confidential hook to connect the call. Now you can answer the phone and talk. After completing your voice conversation, the modem will issue another +PMHF and ATO command to initiate a Quick Connect. If the server rejects the request to go on hold, the user can stay on line ATO command issued or disconnect from his initial data connection ATH command issued Table 16. Supported Modulation Types 3.9.1Local Analog Loopback AT&T1 3.9Diagnostic Testing S18, &Tn Local Modem or Test Modem 3.9.2Local Analog Loopback With Self-TestAT&T8LOCAL MODEM Figure 6. Local Analog Loopback Test Licensing Requirements for Hayes Escape Sequence 3.10.1Time-IndependentEscape Sequence Format <char1><char2><char3><AT command><contents of S3>char1 = char2 = char3 = escape character S2 3.10.2Hayes* Escape Sequence Table 18. Data Mode Command Descriptions Intel Confidential Sn=x Intel Confidential Data Mode AT COMMANDS536EX Chipset Developer’s Manual 536EX Chipset Developer’s Manual AT&V0 Intel Confidential Indication Command DefaultDefinition 1, 0, Intel Confidential +ETBM +ESR1, 1, +ILRR=m +GMR+GSN +IFC 536EX Chipset Developer’s Manual see ‘m’ <carrier>Description +MS=m +PMHR +PHSW=+PMHF <value> Intel Confidential Error Correction and Data Compression Error Correction and Data Compression4Table 19. Operating Modes NOTES Table 20. Resulting +ES Connection Types Intel Confidential Error Correction and Data Compression536EX Chipset Developer’s Manual Intel Confidential <max string> +DR=mdirection +DS=m +EFCS=m 3768 +ER=m +ES=m Fax Class 1 AT Commands Fax Class 1 AT Commands5.1Fax Identity Commands 5.2Fax Class 1 Commands Table 23. <mod> Selection Table Figure 8. T.30 HDLC Frame Format Table 24. Fax Mode Command Descriptions shown in Table 23 on page Table 24. Fax Mode Command Descriptions Continued+FRH=m Refer to Table 23 on page +FTH=m IS-101Voice Mode AT Commands IS-101Voice Mode AT Commands 6.1DTMF Detection Reporting Table 25. Voice Mode Command Descriptions6.2Relay Control m = <deassert>, <assert> +FLO=m +VDR=m m=<enable>, <report> +VEM=m m = <mask> Intel Confidential +VIP +VLS=m Preassigned Voice I/O Labels Relay/Playback Control: cont Voice I/O Primitive Codes m = <sds>, <sdi> +VRX+VSD=m +VSM=m m= <cml>, <vsr>, <scs>, <sel>Transmission: Range: +VSP=m Compression Method Selection: cont factory default is ‘0’ none +VTS=m DTMF and Tone Generation: cont CommandDefault Description Table 26. S-RegisterCommand Descriptions S-RegistersS-Registers S-Registers Intel Confidential536EX Chipset Developer’s Manual S-Registers Intel Confidential536EX Chipset Developer’s Manual S-Registers Intel Confidential536EX Chipset Developer’s Manual S-Registers Caller ID Caller IDTable 27. Caller ID Tags for Formatted Reporting NMBR = RING DATE = TIME = NMBR = NAME = DOE JOHN MESG =RING RING <DLE> R Figure 11. UART Emulation in Intelsdb.VxD Parallel Host Interface 16C450/16C550AUART Parallel Host Interface 16C450/16C550A UART UART Receiver Flow Diagram UART Transmitter Flow Diagram NAME REGISTERBIT NUMBER ADDRESS Figure 15. Modem Status Register MSR 9.2.1Scratch Register SCR9.2.2Modem Status Register MSR Figure 14. Scratch Register SCR Figure 16. Line Status Register LSR 9.2.3Line Status Register LSR Figure 18. Line Control Register LCR 9.2.4Modem Control Register MCR9.2.5Line Control Register LCR Figure 17. Modem Control Register MCR Register 9.2.6FIFO Control Register FCRFigure 19. FIFO Control Register FCR Figure 20. Interrupt Identity Register IIR 9.2.7Interrupt Identity Register IIRTable 28. Interrupt Control Functions Figure 22. Transmitter Holding Register THR 9.2.8Interrupt Enable Register IERFigure 21. Interrupt Enable Register IER 9.2.9Transmitter Holding Register THR Figure 24. Divisor Latch Registers DLM and DLL 9.2.10Receiver Buffer Register RBR9.2.11Divisor Latch Registers DLM and DLL Figure 23. Receiver Buffer Register RBR 9.3.1FIFO Interrupt Mode Operation 9.316C550A UART FIFO Operation9.3.2FIFO Polled Mode Operation Parallel Host Interface 16C450/16C550A UART Intel Confidential536EX Chipset Developer’s Manual