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PDF ( 数据手册 , 数据表 ) XE1414C

零件编号 XE1414C
描述 Worldwide 14.4 KBPS Modem Module for Embedded Applications
制造商 ETC
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XE1414C 数据手册, 描述, 功能
XE1414C
5/2002
Worldwide 14.4 KBPS Modem Module for Embedded Applications
Description
Features
Xecom's XE1414C is a complete, 14.4 Kbps modem in a
single component. Xecom designed the XE1414C for
use throughout North America, Europe and Japan. It
includes user transferrable FCC Part 68 Registration for
Meets telecom requirements for Europe, North
America, and Japan: Includes User Transferrable FCC
Part 68 Registration and CTR21 compliance
Small Size: 2.75 inches by 1.38 inches by 0.42 inches;
direct connection to telephone lines in the United States Modem Protocols support data transfer from 300
and is compliant with CTR21.
BPS to 14.4 KBPS: V.32bis, V.32, V.22bis, V.22, V.21,
Bell 212A and 103;
The XE1414C is a complete modem packaged in a
compact module. The XE1414C includes all required Modem Control and Configuration via AT Commands
modem circuits including the DAA. XE1414C users do Fax Protocols: V.17, V.29, V.27ter, and V.21 channel 2
not need to add RAM, ROM, Crystals, low distortion Error Correction; V.42, MNP2-4 and MNP10
transformer, or switches to complete the modem design. Data Compression; V.42bis and MNP5 provides a
The user only needs to provide the TTL level, serial maximum effective data rate of 57,600 bps.
interface and the telephone line connection.
Non-Volatile Memory included for storing telephone
The XE1414C is pin compatible with Xecom's XE3314C numbers and modem configuration.
modem. This family of modems permits a simple Standard operating temperature range 0C to 70C.
upgrade path from 14,400 bps to 33,600 bps for Extended range of -40C to +85C is available.
international embedded modem applications.
Supports Leased Line Applications.
Serial I/O
/DTR
/RTS
/CTS
/DSR
TXD
RXD
/DCD
Auxiliary I/O
RESET
AR
LCS
OH
AMP
L1
L2
Modem
Controller
Block Diagram
ROM
NVRAM
Analog
Front
End
DAA
Tip
Ring
XECOM
(1) XE1414C







XE1414C pdf, 数据表
XE1414C AT COMMANDS
Modes of Operation
The XE1414C uses "AT" commands for modem control
and configuration. The XE1414C operates in three
modes; Command Mode, Fax Mode and Data Mode.
Extensions to the AT command set support fax
operation.
Data Mode: The modem enters data mode after
establishing a modem link and issues a "CONNECT"
result code. In Data Mode the modem modulates all
signals presented on Transmit Data, Pin 13, and sends
them to the remote modem. The modem demodulates
the signal from the remote modem and places it onto
Received Data, Pin 3, for the host equipment. When
the modem exits data mode, it issues a "NO CARRIER"
result code.
Command Mode: The XE1414C enters command
mode on application of power, reset, loss of the
connection, or receipt of the escape sequence. In
command mode the modem accepts commands from
the host on Transmit Data. Appropriate result codes are
returned on Received Data at the same speed and parity
as the commands.
Fax Mode: The modem enters fax mode on receipt of
the AT+FCLASS=1 command. Fax commands and
responses are issued at 19,200 bits per second; the
character format is 8 bits no parity. The modem accepts
Class 1 Fax commands only in fax mode. The A/, ATO,
AT&T and escape commands are not valid in fax mode.
Commands
The modem is configured and controlled with AT
commands. AT commands follow a strict format. The
command line is stored in the command buffer and
executed upon receipt of a carriage return. Until
executed, the command line can be edited with the
backspace key.
Command Format - Each command, except A/, begins
with the AT prefix. The "A" and "T" may be both upper
case or both lower case but cannot be of different cases.
The modem uses the prefix to identify the host's speed
and parity. The modem determines speed by measuring
the width of the incoming bits and parity by comparing
the parity bits of the "A" and "T." The modem then
returns result codes at the host's speed and parity.
Command Line - A command line may include
multiple commands. The modem executes the
commands in the sequence they appear in the command
line. Spaces, inserted to improve legibility, do not fill
space in the command buffer. A carriage return
terminates the command line and causes the commands
to be executed. Register S3 allows the user to select a
character other than a carriage return to terminate the
command line.
Command Buffer - The command buffer holds a
maximum of 40 characters, including the AT prefix. If it
overflows, the modem issues an "ERROR" result code
and commands are not executed.
Command Line Editing - A backspace can be used to
edit the command line any time before it is executed.
The backspace character erases the previous character in
the command line. Any character except for the "A" and
"T" can be erased. Register S5 allows the user to select
a character other than a backspace to edit the command
line.
Re-Execute Last Command - The A/ command causes
the XE1414C to re-execute the command line stored in
the command buffer. This is the only command which
does not require the "AT" prefix.
Omitted Parameters - Most commands include a
parameter which determines the command function.
When the parameter is omitted from the command string,
it is assumed to be a 0.
Escape Characters - A three character escape sequence,
entered while in data mode, will switch the modem into
command mode while remaining on line. The escape
character, set by Register S2, is entered 3 times in
succession to execute the escape. The default escape
sequence is "+++."
Result Codes - The modem issues a result code after
each action. Result codes may be provided as full words,
numeric codes or may be disabled. Each result code
ends with a carriage return when numeric result codes
are chosen. When full word result codes are chosen, a
Line Feed and Carriage Return precede and follow each
result code.
XECOM
(8) XE1414C







XE1414C equivalent, schematic
XE1414C Modem Result Codes
Digits
Verbose
0 OK
1 CONNECT
2 RING
3 NO CARRIER
4 ERROR
5 CONNECT 1200
6 NO DIAL TONE
7 BUSY
8 NO ANSWER
10 CONNECT 2400
11 CONNECT 4800
12 CONNECT 9600
13 CONNECT 7200
14 CONNECT 12000
15 CONNECT 14400
16 CONNECT 19200
17 CONNECT 38400
18 CONNECT 57600
19 CONNECT 115200
22 CONNECT 75TX/1200RX
23 CONNECT 1200TX/75RX
33 FAX
35 DATA
40 +MRR: 300
44 +MRR: 1200/75
45 +MRR: 75/1200
46 +MRR: 1200
47 +MRR: 2400
48 +MRR: 4800
49 +MRR: 7200
50 +MRR: 9600
51 +MRR: 12000
52 +MRR: 14400
Description
igits Verbose
Successfully executed command line
66
+DR: Alt
300 bps connection
67 +DR: V42B
Ring signal detected
69 +DR: NONE
Carrier not detected/lost
70 +ER: NONE
Error in command line
77 +ER: LAPM
1200 bps connection
80 +ER: ALT
No dial tone detected
81 +ER: ALT CELLULAR
Busy signal detected
84 CONNECT 33600
5 second silence not detected
91 CONNECT 31200
2400 bps Connection
134 +MCR: B103
4800 bps Connection
135 +MCR: B212
9600 bps Connection
136 +MCR: V21
7200 bps Connection
137 +MCR: V22
12,000 bps Connection
138 +MCR: V22B
14,400 bps Connection
139 +MCR: V23
19,200 bps Connection
140 +MCR: V32
38,400 bps Connection
141 +MCR: V32B
57,600 bps Connection
+F4 +FCERROR
115200 bps Connection
.23 originate connection
V.23 answer connection
Fax connection
Data connection in Fax mode
300 bps carrier received
V.23 reverse channel carrier received
V.23 forward channel carrier received
1200 bps carrier received
2400 bps carrier received
4800 bps carrier received
7200 bps carrier received
9600 bps carrier received
12,000 bps carrier received
14,400 bps carrier received
Description
MNP5 data compression
V.42bis data compression
No data compression
No error correction
LAPM error correction
MNP error correction
MNP10 error correction
33,600 bps Connection
31,200 bps Connection
Bell 103 Connection
Bell 212A Connection
V.21 Connection
V.22 Connection
V.22bis Connection
V.23 Connection
V.32 Connection
V.32bis Connection
Fax carrier error
XECOM
(16) XE1414C










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