536EX Chipset Developer’s Manual
3
Intel Confidential
Contents
Contents
1
Introduction ...................................................................................................................................... 7
1.1
Controllerless Modem Driver Overview ................................................................................ 7
1.1.1
Windows* Millennium Edition (Windows Me), Windows 2000, Windows XP, and
Windows NT* 47
1.1.2
Windows 95 and Windows 98.................................................................................. 8
1.2
V.90/V.92 and V.34 Data Modes .......................................................................................... 9
1.3
Modem Connection Overview............................................................................................. 10
1.4
AT Commands Overview .................................................................................................... 11
1.4.1
Sending Commands .............................................................................................. 12
1.4.2
AT Escape Sequences .......................................................................................... 13
1.4.3
Dial Modifier ........................................................................................................... 13
2
AT Command Summary Tables .................................................................................................... 14
3
Data Mode AT COMMANDS ......................................................................................................... 26
3.1
Using AT Commands to Access the S-Registers [Sn?, Sn=x, ?]........................................ 26
3.2
Modem Responses and Command Echo [En, Vn, Xn, Wn, Qn]......................................... 26
3.3
Modem Reset and NVRAM Commands [DS=m, Zn, &F, &Vn, &Yn, &Wn, &Zn=x] ........... 28
3.4
Modem Identification Commands [In, +FMI, +FMR, +FMM, +GMI, +GMM, +GMR, +GSN,
+FMFR?, +FMDL?, +FREV?] ............................................................................................. 29
3.5
Establishing a Modem Connection [A, D, DS = n, S0]........................................................ 29
3.6
Online Command Mode [Escape Codes, On]..................................................................... 30
3.7
Hanging Up [Hn, S10, Zn, &D2].......................................................................................... 30
3.8
Modem-to-Modem Connection Data Rates ........................................................................ 30
3.9
Diagnostic Testing [S18, &Tn] ............................................................................................ 36
3.9.1
Local Analog Loopback [AT&T1] ........................................................................... 36
3.9.2
Local Analog Loopback With Self-Test [AT&T8].................................................... 37
3.10
AT Escape Sequences ....................................................................................................... 38
3.10.1 Time-Independent Escape Sequence ................................................................... 38
3.10.2 Hayes* Escape Sequence ..................................................................................... 40
4
Error Correction and Data Compression ....................................................................................... 56
5
Fax Class 1 AT Commands........................................................................................................... 64
5.1
Fax Identity Commands...................................................................................................... 64
5.2
Fax Class 1 Commands ..................................................................................................... 64
6
IS-101 Voice Mode AT Commands ............................................................................................... 70
6.1
DTMF Detection Reporting ................................................................................................. 71
6.2
Relay Control ...................................................................................................................... 71
7
S-Registers.................................................................................................................................... 85
8
Caller ID......................................................................................................................................... 90
9
Parallel Host Interface 16C450/16C550A UART ........................................................................... 92
9.1
UART Emulation in the Controllerless Modem ................................................................... 92
9.2
UART Register Definitions.................................................................................................. 95