MD566X
Revision History
Conventions
Symbol Units of measure
Programmer’s Guide
Acronym Definition
Dram
Intel V.90/V.92 56K Chipsets
Chipset Contents Qty
Introduction
Modem Connection Overview
V.92, V.90 and V.34 Data Modes
Mode Data Rate bps Affected Data
DTE-to-DCE Data Rates for Each Mode
DCE-to-DCE Data Rates for Each Mode
Command Function Default Range Reported by
AT Command Summary Tables
Data Mode Command Summary
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Data rate Result code type Yes
Ports only Async mode
+GMI?
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Command Function Default Range Reported By &Vn
V.44 / V.42 / V.42 bis MNP∗ Command Summary
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Value saved in Nvram
IS-101 Voice Command Summary
Fax Identity Command Summary
Fax Class 1 Command Summary
Response Hex Code Function
Voice DTE→DCE Character Pairs
Voice DTE←DCE Character Pairs
S-Register Summary
Dial Modifiers Command Function
Register Function Default Range Units Reported By &Vn
Verbose Code Numeric Code
10. V.90/V.92 Mode DCE-to-ISP Response Codes
12. DTE-to-DCE Data Rate Response Codes
11. V.34 Mode DCE-to-DCE Response Codes
Command Function Default Range
13. Manufacturing-Only Command Summary a
Using AT Commands to Access the S-Registers Sn?, Sn=x, ?
Basic Data Mode AT Commands
Modem Responses and Command Echo En, Vn, Xn, Wn, Qn
Modem Setup Host Command Modem Response
Example of a Remote Connection
Information
Product Identification Information
Establishing a Modem Connection A, D, DS = n, S0
Modem-to-Modem Connection Data Rates
Online Command Mode Escape Codes, On
Hanging Up Hn, S10, Zn, &D2
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ATH +PMHF
+PMHR
Carrier Description
Supported Modulation Types
S37
+MS = carrier , automode, min rate, max rate
Figured to attempt only a 28,800 bps connec
Originating Answering Resulting Connection Speed Modem
Local Analog Loopback AT&T1
Diagnostic Testing S18, &Tn
AT&T0
Local Analog Loopback with Self-Test
Local Analog Loopback With Self-Test AT&T8
Time-Independent Escape Sequence
AT Escape Sequences
Licensing Requirements for Hayes Escape Sequence
Hayes∗ Escape Sequence
None
Data Mode Command Descriptions
Command Default Description
Stant carrier mode
Dialing Digits
Online data mode echo
Reports product code
ATI5
Cont
Mode from online command mode
Sn?
Sn=x
Protocol Lapm
Sequent commands to be ignored
For data mode
Ports asynchronous mode. This command is the same as &M0
User profile n
Zn=x None
Modem power-up
+GMR?
V34BS
+MS=m See m
Cont
Modulation Selection
Examples DTE data rate = 2400 bps
Examples DTE data rate = 115,200 bps
+MS=m
+PMH=m
+PCW=m
DCE
+PMHR none
Mand
+PSS=m
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Mode Features
Error Correction and Data Compression
Resulting \Nn Connection Types
Bis with fallback to MNP5 \N3
\Bn None
\An
\Jn
\Cn
\Gn
\Nn
\Kn
\Xn
\Qn
\Tn
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140,1884 3768
0,471
+DS44=m 972,140
Fax Identity Commands
FAX Class 1 AT Commands
Fax Identity Command Descriptions
Tocols
+FREV?/+FMR? none
Fax Class 1 Commands
Value Modulation Speed Bps
Mod Selection Table
Class 1 DTE-Generated Hdlc Frame Information AT+FTH=mod
+FCLASS=1
Fax Mode Command Descriptions
+FRH=n
Command Default Description Receive Hdlc Data
+FRM=n None
+FRS=n None
DTE after receiving the +FTH=mod command
Data using the modulation selected in mod
Each command may be used as follows
IS-101 Voice Mode AT Commands
Relay Control
Dtmf Detection
+FLO=n
Voice Mode Command Descriptions
+VCID=n
+VBT=m
+VEM=m See m
Enable Report Function
+VDR=m
Dialtone
+VEM=m
Example 3. Reading the Event Mask Settings
Example 2. Setting the Event Mask
Event Reporting and Masking
Example 1. Viewing Supported Events
+VGR=n 128
+VGM=n 128
+VGS=n
+VGT=n
+VIP none
+VLS=n
Code
+VNH=n
Relay/Playback Control
Primitive Code +VLS=n
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+VRX none
+VSD=m See ‘m’
= sds, sdi Defaults m = 128
Vsr Comments Samples/second
Manufac +VSM=m turer- specified
+VSM=m Manufac
Compression Method Selection
Vsr
Hard Disk
+VTD=n 100
+VSP=n
+VTS=m none
AT+VTS=DTMF or
Dtmf and Tone Generation
AT+VTS= , ,duration For example AT+VTS= , ,50
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Registers
S-Register Command Descriptions
Ascii decimal
S12
S10
S11
S16
S14 138
S22 118
S21
S27
S23 None
S31
S33
Maximum Line Speed Attempted
110
Caller ID Tags for Formatted Reporting
Caller ID
Ring
NCnn
MANUFACTURING-ONLY Commands
Manufacturing-Only Command Descriptions
S92
S91
$TTnn
FAX Test
Tone Test Command Analog Loopback ALB Test
#VGP0=n
Command Bit Pins
#VGP1=n See Note
#VGP2=n
118
119
Parallel Host Interface 16C450/16C550A Uart
Programmer’s Guide
Register BIT Number Address Name
Parallel Host Interface Uart Register Bit Assignments
Scratch Register SCR
Uart Register Definitions
Modem Status Register MSR
Line Status Register LSR
Modem Control Register MCR
Are no subsequent Fifo errors
123
Line Control Register LCR
Trigger Level Bytes
Fifo Control Register FCR
125
Interrupt Identity Register IIR
Interrupt Control Functions
10.1.10Receiver Buffer Register RBR
Interrupt Enable Register IER
Transmitter Holding Register THR
10.2 16C550A Uart Fifo Operation
Fifo Interrupt Mode Operation
10.1.11Divisor Latch Registers DLM and DLL
Programmable Data Rates
Fifo Polled Mode Operation
129
130