ch2056tbr ETC-unknow, ch2056tbr Datasheet

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ch2056tbr

Manufacturer Part Number
ch2056tbr
Description
High Speed Modem Family
Manufacturer
ETC-unknow
Datasheet
FEATURES
INTRODUCTION
The CH2056, CH1799 and CH1794 (HS Modem
Family) are industrial grade high-speed modem
modules. Each HS Modem product supports a range
of modem standards and speeds from 300bps to
14,400bps, 28,800bps, 33,600bps or 57,600bps. By
using built in compression algorithms the operation
speed can be expanded to the maximum DTE rate of
57.6kbps for the CH1794, 115.2kbps for the CH1799
and 230.4kbps for the CH2056. A choice of error
correcting schemes is available including MNP 10 for
cellular telephone applications. The HS Modem family
supports Send and Receive FAX.
operates exclusively on non-voltage bearing leased
line.
2003 Cermetek Microelectronics, Inc.
Supports V.90, V.34bis, V.34, V.32bis, V.32,
V.22bis, V.22A/B, V.23, V.21, Bell 212A and 103.
CH2056 supports V.80 Synchronous operation.
Error correcting: V.42 LAMP, MNP 2-4 and
MNP10.
Data Compression: V.42bis and MNP 5
MNP10 Data through put enhancement for cellular
operation.
DTE serial interface with speeds up to 230.4kbps
(CH2056), 115.2 (CH1799) or 57.6kbps (CH1794).
Automatic baud rate adaptability utilizing speed
sensing, flow control and data buffers.
Send & Receive FAX class 1, Group 3 supported.
Serial V.24, 5 volt interface.
NVRAM directory and stored profiles.
AT Command structure, with extensions.
Built-in DAA with 1500 VAC RMS isolation 2122V
peak surge protection.
UL 1950 and CSA C22.2 950 Recognized
(E104957).
Leased Line version available CH1799LL
FCC part 68 Approved/DOT CSA CS-03 Part I
Approvable.
+5 Volt operation with zero power option
Small size: 1.35” x 1.38” x 0.61” (nominal, 0.55”
upon request).
Pin compatible with low speed/low cost CH1786
TBR21
CH1799TBR/ETBR and CH2056TBR/ETBR.
compliant
HIGH SPEED Modem and FAX FAMILY
CH2056/TBR/ETBR
CH1799/TBR/ETBR
CH1794
versions
The CH1799LL
available:
Page 1
V.90 / 57,600bps/TBR21
V.34bis / 33,600bps/TBR21
V.32bis / 14,400bps
The HS Modem family is pin compatible with
Cermetek’s low cost CH1786 V.22bis, 2400bps
modem family. Each module in the HS Modem family
is a self-contained modem and is FCC Part 68
approved
Additionally,
CH2056TBR/ETBR products meet the European
TBR21 requirements.
These ultra small modules are designed for PCB
through-hole mounting and are 1.35” x 1.38” x 0.61”
(nominal, 0.55” upon request) in size. The HS Modem
family requires only two external interfaces: a CCITT
V.24 serial interface for direct access to a UART, and
a Tip and Ring RJ-11C Jack for the PSTN line
connection. The HS Modem can be controlled with
industry standard AT commands and is compatible
with available industry communication software.
DESCRIPTION
AND DISCUSSION OF BASIC OPERATIONS
Figure 1 contains a functional block drawing of the HS
Modem family of products. Each HS Modem product
consists
modulator/demodulator, modem controller with error
correction and data compression, non-volatile RAM
and a DAA.
Figure 1. Functional Block Diagram of HS Modem
Family.
Serial Host Interface Buffer. The HS Modem utilizes
a serial V.24 EIA 232-E 5V interface to control the
modem. The HS Modem products can communicate
over the serial interface with the Data Terminal
of
and
the
Document No. 607-0003 Revision K3 (09/03)
a
OF
Canadian
CH1799TBR/ETBR
serial
FUNCTIONAL BLOCKS
DOT
interface
approvable.
and
buffer,
the

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ch2056tbr Summary of contents

Page 1

... Each module in the HS Modem family is a self-contained modem and is FCC Part 68 approved Additionally, CH2056TBR/ETBR products meet the European TBR21 requirements. These ultra small modules are designed for PCB through-hole mounting and are 1.35” x 1.38” x 0.61” (nominal, 0.55” upon request) in size. The HS Modem family requires only two external interfaces: a CCITT V ...

Page 2

Cermetek Microelectronics, Inc. Equipment (DTE fixed speed regardless of the carrier line modulation speed (DCE) of the PSTN modem connection. This eliminates the need to have the DTE step up or step down in speed based on the ...

Page 3

Cermetek Microelectronics, Inc. CONNECTING TO THE HOST UART Since a modem communicates data serially and most host products handle data in a parallel format, a UART is needed to make parallel-to-serial and serial-to- parallel translations. SUPPORTED FEATURES AT Command Set. ...

Page 4

Cermetek Microelectronics, Inc. CH1794 300, 600, 1200, 2400, 4800, 7200, 9600, 12000, 14400, 19200, 38400, and 57600bps. CH1799 300, 600, 1200, 2400, 4800, 7200, 9600, 12000, 14400, 16800, 19200, 21600, 24000, 26400, 28800, 38400, 57600, and 115200bps. CH2056 300, 600, ...

Page 5

Cermetek Microelectronics, Inc switch to data mode, switch local voice source from T1: (a) At the Originate Modem, enter: ATX1<CR> (b) At the Answer Modem, enter: ATA<CR> disconnect (hang-up) a voice call or data call: (a) ...

Page 6

Cermetek Microelectronics, Inc. AT [Commands]<CR>. Where: AT represents attention sequence. A and T may be either upper or lower case but must be the same case. [Command] represents command strings. Where: <CR> represents carriage return (ASCII 13 or HEX 0D) ...

Page 7

Cermetek Microelectronics, Inc. code 0) or the command is valid or accepted, or with an ERROR (result code 4) if the command is not recognized. The detail contained in the error result codes signaled to the DTE depends on the ...

Page 8

Cermetek Microelectronics, Inc. Table 3. PIN NAME I/O 1 RING I/O TELCO/TELSET INPUT. Directly connects to the telephone line’s RING lead through a user supplied RJ-11C jack. 2 TIP I/O TELCO/TELSET INPUT. Directly connects to the telephone line’s TIP lead ...

Page 9

Cermetek Microelectronics, Inc. AT COMMAND APPLICATIONS Dialing a Phone Number. The Dial command takes the form Dn, where string of characters. In the simplest form, n will be only the digits of the phone number to be ...

Page 10

... FOR YOUR USER’S MANUAL The Part 68 rules require the following (or equivalent) be provided to the end user of the equipment CH2056TBR/ETBR containing a DAA: to meet the Type of Service. The (insert end product name) is designed to be used on standard device telephone lines ...

Page 11

Cermetek Microelectronics, Inc. If Problems Arise. If any of your telephone equipment is not operating properly, you should immediately remove it from you telephone line may cause harm to the telephone network. telephone company notes a problem, they ...

Page 12

Cermetek Microelectronics, Inc. Figure 5. Schematic Illustrating Implementation of Voice Injection Feature. Table 5A. Summary of Non-Extended Codes (Continuation). Result Code Form Terse Verbose or Long or Short 17 CONNECT 38400 18 CONNECT 57600 19 CONNECT 115200 20 CONNECT 230400 ...

Page 13

Cermetek Microelectronics, Inc. Table 5C. CH2056 Extended (Continuation). Result Code Form Terse Verbose or Long or Short 168 CONNECT 38000 169 CONNECT 40000 170 CONNECT 44000 171 CONNECT 46000 172 CONNECT 48000 173 CONNECT 48000 174 CONNECT 50000 175 CONNECT ...

Page 14

Cermetek Microelectronics, Inc. Table 6B. Summary of Basic AT Commands. Command Function &F0 Restore Factory configuration 0 &F1 Restore Factory configuration 1 &G0 Disable guard tone &G1 Disable guard tone &G2 Enable 1800 Hz guard tone &K0 Disable DTE/DCE flow ...

Page 15

Cermetek Microelectronics, Inc. Register Function S0 Rings to Auto-Answer S1 Ring Counter S2 Escape Character S3 Carriage Return Character S4 Line Feed Character S5 Backspace Character S6 Wait Time for Dial Tone S7 Wait Time for Carrier S8 Pause Time ...

Page 16

Cermetek Microelectronics, Inc. Figure 6. PSTN Line Interface for all HS Modems. 1. Currently Limiting PSTN Device. Currently limiting devices are mandatory to meet UL safety standards. conveyed FCC Part 68 approval, the current limiting components identified as F1 and ...

Page 17

Cermetek Microelectronics, Inc. Symbol V Positive Supply Voltage CC I Off Hook Nominal Operating Current @ CC (CH1794 5.5V when modem is Off Hook CC I Off Hook Nominal Operating Current @ CC (CH1799 5.5V when ...

Page 18

... TBR21 Compliant CH2056 Full Function, 56.0kbps, FCC Part 68 Approved, UL 1950 Listed CH2056ET Full Function, 56.0kbps, FCC Part 68 Approved, UL 1950 Listed CH2056TBR Full Function, 56.0kbps, FCC Part 68 Approved, UL 1950 Listed, TBR21 Compliant CH2056ETBR Full Function, 56.0kbps, FCC Part 68 Approved, UL 1950 Listed, TBR21 Compliant  ...

Page 19

Cermetek Microelectronics, Inc. NOTES: 1. All dimensions are inches. 2. Case dimensions are nominal + 0.02 inches. 3. Pin length is nominal + 0.03 inches. 4. Cermetek recommends that 0.04 inch diameter plated through holes are used with 0.060 inch ...

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