Intel MD566X - page 94

56K V.92 Data, Fax, and Voice Chipset

94 Intel Confidential Programmer’s Guide

+VSM=m

manufac-

turer-

specified

Compression Method Selection: This command contains four parameters that

specify the voice compression method, voice samplin g rate, silence compression

sensitivity, and the degree of silence expansion. The DCE can support differen t

capabilities for each compression method.

m= <cml>, <vsr>, <scs>, <sel>

Defaults: m = 140, 8000, 0, 0

<cml> Compression Method: This parameter selects a voice compression

method. The DTE can obtain the label and a string constant identifier by usin g

the +VSM? command.

Range: <cml> = 0–2, 128, 129, 132, 140, 141

Default: <cml> = 140

<cml> = 0 LIN1: 8-bit Linear PCM (pulse code modulation) sampli ng using

twos-complement signed numbers

<cml> = 1 LIN2: 16-bit Linear PCM sampling using unsigned numbers

<cml> = 2 AD4: 4-bit Adaptive differential pulse code modulation

<cml> = 128 LIN1: 8-bit Linear PCM (pulse c ode modulation) sampling using

twos-complement signed numbers

<cml> = 129 LIN2: 16-bit Linear PCM sampling using unsigned numbers

<cml> = 132 AD4: 4-bit Adaptive differential pulse code modulation

<cml> = 140* CL1: 8-bit Intel A-law

<cml> = 141 AD3: 3-bit Adaptive differential pulse co de modulation

<vsr> Sampling Rate: This parameter selects the DCE voice sampling/digitiz-

ing rate for the voice signal. The supported sampling rates are depen dent on the

compression schemes used. Use the +VSM=? command to obtain supported

sampling rates.

Range: <vsr> = 4800, 7200, 8000, and 11025 samples/second

Default: <vsr> = 8000*

<scs> Silence Sensitivity: The function of this parameter depends on whether

the DTE is transmitting or receiving in voice mode. The DT E can modify the si-

lence expansion using the <sel> parameter. When transmitting voice, a non-zero

value of this parameter informs the DCE that the data s tream was recorded with

silence compression.

Table 6-1. Voice Mode Command Descriptions (Continued)

<vsr>

(samples/second) Comments

4800 Default used by previous legacy modems

7200

8000 Used by some bulletin boards

9600

11025 Used by many Windows∗ .WAV files

Contents

Main MD566X 56K Data, Fax, and Voice Chipset Revision History Date Revision May 2001 Revise layout. July 2001 Update for V.92 Programmers Guide Intel Confidential CONVENTIONS Abbreviations Acronyms Acronym Definition (Continued) Programmers Guide Intel Confidential 1. INTRODUCTION Table 1-1. Intel V.90/V.92 56K Chipsets 1.1 V.92, V.90 and V.34 Data Modes 1.2 Modem Connection Overview Programmers Guide Intel Confidential Table 1-2. DTE-to-DCE Data Rates for Each Mode Table 1-3. DCE-to-DCE Data Rates for Each Mode 2. AT COMMAND SUMMARY TABLES Table 2-1. Data Mode Command Summary Note Command Function Default Range Reported by &Vn 56K V.92 Data, Fax, and Voice Chipset Note Command Function Default Range Reported by &Vn Page Page Page Page 14 Intel Confidential Programmers Guide Table 2-2. V.44 / V.42 / V.42 bis MNP Command Summary Note Command Function Default Range Reported by &Vn Programmers Guide Intel Confidential Table 2-2. V.44 / V.42 / V.42 bis MNP Command Summary (Continued) Note Command Function Default Range Reported by &Vn Page Programmers Guide Intel Confidential Table 2-3. Fax Identity Command Summary Table 2-4. Fax Class 1 Command Summary Table 2-5. IS-101 Voice Command Summary 18 Intel Confidential Programmers Guide Table 2-5. IS-101 Voice Command Summary (Continued) Table 2-6. Voice DTEDCE Character Pairs Response Hex Code Function Programmers Guide Intel Confidential Table 2-7. Voice DTEDCE Character Pairs Response Hex Code Function 20 Intel Confidential Programmers Guide Table 2-8. Dial Modifiers Command Function Note R egister Function Default Range Units Table 2-9. S-Register Summary Reported by &Vn Programmers Guide Intel Confidential Table 2-9. S-Register Summary (Continued) Table 2-10. V.90/V.92 Mode DCE-to-ISP Response Codes 22 Intel Confidential Programmers Guide Table 2-11. V.34 Mode DCE-to-DCE Response Codes Verbose Code Numeric Code Table 2-12. DTE-to-DCE Data Rate Response Codes Verbose Code Numeric Code Programmers Guide Intel Confidential Table 2-13. Manufacturing-Only Command Summary 3. BASIC DATA MODE AT COMMANDS 3.1 Using AT Commands to Access the S-Registers [Sn?, Sn=x, ?] 3.2 Modem Responses and Command Echo [En, Vn, Xn, Wn, Qn] Programmers Guide Intel Confidential 3.3 Modem Reset and NVRAM Commands [DS=n, Zn, &F, &Vn, &Yn, &Wn, &Zn=x] Table 3-1. Product Identification Information 3.5 Establishing a Modem Connection [A, D, DS = n, S0] 3.6 Online Command Mode [Escape Codes, On] 3.7 Hanging Up [Hn, S10, Zn, &D2] 3.8 Modem-to-Modem Connection Data Rates Page Page Page Page Programmers Guide Intel Confidential Table 3-2. Supported Modulation Types Page Programmers Guide Intel Confidential Table 3-3. Resulting DCE-to-DCE Connection Rates with Non-Default Value s 3.9 Diagnostic Testing [S18, &Tn] 3.9.1 Local Analog Loopback [AT&T1] LOCAL MODEM Figure 3-2. Local Analog Loopback Test Local Modem (or Test Modem) Page 3.9.2 Local Analog Loopback With Self-Test [AT&T8] Figure 3-3. Local Analog Loopback with Self-Test Local Modem (or Test Modem) Programmers Guide Intel Confidential 3.10 AT Escape Sequences 3.10.1 Time-Independent Escape Sequence Licensing Requirements for Hayes Escape Sequence 3.10.2 Hayes Escape Sequence En, Hn, Mn, On, Qn, Sn, Vn, Xn, and & commands (except &Tn and &F) Page Page Page Page Programmers Guide Intel Confidential (cont.) 0 Identification/Checksum Option: (cont.) Page Page Programmers Guide Intel Confidential Wn 0 Page Page Page Page Page Page Page Page Page Page Page Page Page Programmers Guide Intel Confidential 4. ERROR CORRECTION AND DATA COMPRESSION Operating Modes Table 4-1. Resulting \Nn Connection Types Page Page Page Page Page Page +DS44=m 3,0,0,471, 972,140, 140,1884, 3768 5. FAX CLASS 1 AT COMMANDS 5.1 Fax Identity Commands Table 5-1. Fax Identity Command Descriptions Programmers Guide Intel Confidential Table 5-1. Fax Identity Command Descriptions 5.2 Fax Clas s 1 Commands Figure 5-1. T.30 HDLC Frame Format Table 5-2. <mod> Selection Table Programmers Guide Intel Confidential Figure 5-2. CLASS 1 DTE-Generated HDLC Frame Information (AT+FTH=<mod>) Figure 5-3. CLASS 1 DTE Reception of HDLC Frame Information (AT+FRH=<mod>) Table 5-3. Fax Mode Command Descriptions Page Page 6. IS-101 VOICE MODE AT COMMANDS 6.1 DTMF Detection 6.2 Relay Control Table 6-1. Voice Mode Command Descriptions Page Page Page Page Programmers Guide Intel Confidential Table 6-1. Voice Mode Command Descriptions (Continued) 15678 2 } } Page Programmers Guide Intel Confidential +VLS=n 0 Preassigned Voice I/O Labels Table 6-1. Voice Mode Command Descriptions (Continued) <label> Primitive Code Description Voice I/O Primitive Codes Table 6-1. Voice Mode Command Descriptions (Continued) Page Page Page Page Page Page Page Page Page Page Programmers Guide Intel Confidential 7. S-REGISTERS Table 7-1. S-Register Command Descriptions Page Page Page Page Page Programmers Guide Intel Confidential S33 10 Page Page Programmers Guide Intel Confidential 8. CALLER ID Table 8-1. Caller ID Tags for Formatted Reporting Page Programmers Guide Intel Confidential 9. MANUFACTURING-ONLY COMMANDS Table 9-1. Manufacturing-Only Command Descriptions Page Page Page Page Page 10. PARALLEL HOST INTERFACE 16C450/16C550A UART Figure 10-1. FIFO Buffers for Transmitter and Receiver 120 Intel Confidential Programmers Guide Table 10-1. Parallel Host Interface UART Register Bit Assignments Note: These bits are always 0 in 16C450 mode. 10.1 UART Register Definitions 10.1.1 Scratch Register (SCR) Register 5 10.1.2 Modem Status Register (MSR) 10.1.3 Line Status Register (LSR) 10.1.4 Modem Control Register (MCR) Register 4 10.1.5 Line Control Register (LCR) Register 3 10.1.6 FIFO Control Register (FCR) Register 2 Programmers Guide Intel Confide ntial 125 10.1.7 Interrupt Identity Register (IIR) Table 10-2. Interrupt Control Functions FIFO Mode Only Interrupt Identification Register Interrupt Source and Reset Functions FIFO EN FIFO EN 0 VDMA Int. ID 2 Int. ID 1 Int. ID 0 Int. Pen. 10.1.8 Interrupt Enable Register (IER) 10.1.9 Transmitter Holding Register (THR) 10.1.10Receiver Buffer Register (RBR) Register 1 10.1.11Divisor Latch Registers (DLM and DLL) 10.2 16C550A UART FIFO Operation 10.2.1 FIFO Interrupt Mode Operation Table 10-3. Programmable Data Rates Register 1 10.2.2 FIFO Polled Mode Operation