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

2. AT COMMAND SUMMARY TABLES

This section contains summary tables of all AT commands, S-registers, and manufacturing-only commands. These commands are described fully in the relevant sections of the Programmer’s Guide.

Table 2-1.

Data Mode Command Summary

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note

 

Command

Function

Default

Range

Reported by

 

&Vn

 

 

 

 

 

 

 

 

 

 

 

 

 

**

 

A/

Repeat last command

none

no

 

 

 

 

 

 

 

 

 

A

Answer

none

no

 

 

 

 

 

 

 

*

 

Bn

Select ITU-T or Bell*

1

0–3

yes

 

 

 

 

 

 

 

 

 

B0

Selects ITU-T V.22 at 1200 bps and ITU-T

 

 

 

 

 

V.21 at 300 bps

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B1

Selects Bell 212A at 1200 bps and Bell 103J

 

 

 

 

 

at 300 bps

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Selects ITU-T V.23 only. The originating

 

 

 

 

 

B2

modem transmits at 75 bps (and receives at

 

 

 

 

 

1200 bps); the answering modem receives at

 

 

 

 

 

 

 

 

 

 

 

 

75 bps (and transmits at 1200 bps)

 

 

 

 

 

 

 

 

 

 

 

 

 

Selects ITU-T V.23 only. The originating

 

 

 

 

 

B3

modem transmits at 1200 bps (and receives

 

 

 

 

 

at 75 bps); the answering modem receives at

 

 

 

 

 

 

 

 

 

 

 

 

1200 bps (and transmits at 75 bps)

 

 

 

 

 

 

 

 

 

 

 

 

Cn

Carrier control option

1

0, 1

no

 

 

 

 

 

 

 

 

 

C0

Transmit carrier always off

 

 

 

 

 

 

 

 

 

 

 

 

C1

Normal transmit carrier

 

 

 

 

 

 

 

 

 

 

 

 

D

Dial command

none

no

 

 

 

 

 

 

 

*

 

En

Command mode echo

1

0, 1

yes

 

 

 

 

 

 

 

 

 

E0

Disables echo

 

 

 

 

 

 

 

 

 

 

 

 

E1

Enables echo

 

 

 

 

 

 

 

 

 

 

 

 

Fn

Online echo

1

0, 1

no

 

 

 

 

 

 

 

 

 

F0

Enables online echo

 

 

 

 

 

 

 

 

 

 

 

 

F1

Disables online echo

 

 

 

 

 

 

 

 

 

 

 

 

Hn

Switch hook control

0

0, 1

no

 

 

 

 

 

 

 

 

 

H0

Hangs up the telephone line

 

 

 

 

 

 

 

 

 

 

 

 

H1

Picks up the telephone line

 

 

 

 

 

 

 

 

 

 

 

 

In

Identification/checksum option

0

0–8, 10, 11,

no

 

 

14, 20–23

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I0

Reports product code

 

 

 

 

 

 

 

 

 

 

 

 

I1

Reports modem chip firmware version

 

 

 

 

 

 

 

 

 

 

 

 

I2

Verifies ROM checksum

 

 

 

 

 

 

 

 

 

 

 

 

I3

Reports chipset name

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

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Programmer’s Guide

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Intel MD566X manual AT Command Summary Tables, Data Mode Command Summary, Command Function Default Range Reported by