CH2056A ET Cermetek Microelectronics, CH2056A ET Datasheet
CH2056A ET
Specifications of CH2056A ET
Related parts for CH2056A ET
CH2056A ET Summary of contents
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... Zero Power (optional). • Off-Hook Indication (optional). • Leased Line version available. • TBR21 Compliant version available. 2007 Cermetek Microelectronics, Inc. – V.92 / 57,600bps / TBR21 – V.34bis / 33,600bps / TBR21 – V.32bis / 14,400bps / TBR21 INTRODUCTION The CH2056A, CH1799A and CH1794A (HS Modem Family) are industrial grade high-speed modem modules ...
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... DAA designed for optimal performance over all PSTN line conditions thereby achieving the most reliable and best performance PSTN connections. 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems The HS Modem family is designed to meet North American telephone standards as set by the FCC Part 68 (USA) and CSA CS-03 Part I (Canada) ...
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... Result: OK This is identical to the following explicit +MS command: Enter: AT+MS=V22B,0,300,1200,300,1200 Result: OK 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems Refer to and the Figure 2. Example of Off Hook Indication using “H” version HS Modem and external LED and resistor. The minimum transmission rate is not stored and will default to 300bps upon execution of reset or upon power up ...
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... Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems Failure to provide such operating conditions could cause the HS Modem to malfunction or to function erratically ...
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... T1 during data operation will affect the HS Modem’s output being asserted from another 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems application, use a relay or zero impedance switch to disconnect T1 when in data mode. ...
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... Note that a 50 msec delay is required between escape characters. These two parameters can be modified via registers S2 and S12, respectively. 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems The HS Modem family of products has been FCC Refer to Part 68 approved as data/FAX modems ...
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... Refer to the complete list in Table 6. 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems INITIALIZING THE MODEM Before commands may be sent to the HS Modem, the modem must be initialized. This is a two step process: Step 1 ...
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... Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems It should be noted that the default connect result codes 9-20 indicate DTE connection speed, not Carrier Line DCE speed. maximum speed of 19.2kbps (result code 16). The CH1799A will connect at a maximum DTE speed of 38 ...
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... NOTE: (1) If VCC has a slow power up ramp time, the internal reset may be ineffective. (2) Do not drive LED’s directly from any output. Use Buffers. 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems HS Modem Family Pin Descriptions. FUNCTION Active LOW ...
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... If the dial command does not specify which type to use, the modem defaults to the type last specified. The power-on default value is T. 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems Example: Pulse dial 9, pause, touch-tone dial number. ...
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... Caller ID (CID) requires that the PSTN service provider supply the required data. feature will report the NULL string if the CID service is not activated by the PSTN service provider. 2007 Cermetek Microelectronics, Inc. PHONE LINE CONNECTION GUIDELINES 1. The HS Modem must be mounted in the final assembly such that it is isolated from exposure to any hazardous voltages within the assembly ...
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... Modem can be removed and then forwarded to Cermetek for repair. The following notice is recommended and should be included in the end product’s user manual. 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems FOR YOUR USER’S MANUAL and The Part 68 rules require the following (or equivalent) ...
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... DTR always active – hang up after transition Long space disconnect disabled Speaker enabled but off when receiving carrier Speaker volume set to low 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems Local modem will not grant RDL request from remote modem Guard tones disabled Minimum DTR pulse width = ...
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... X 54 +MRR: 19200 +MRR: 21600 +MRR: 24000 +MRR: 26400 +MRR: 28800 CARRIER 16800 CARRIER 21600 CARRIER 24000 CARRIER 26400 CARRIER 28800 +DR: ALT X X 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems Table 4. Notes Result Code Form Terse or Short ...
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... Xn. A numeral indicates which more explicit message will be output for that X option. 2. Applicable to CH1799A and CH2056A models only. 3. Applicable to CH2056A models only. 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems Notes Command ...
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... Select modulation +MCR=n Carrier protocol n reporting +MR=n Select extended Reporting of +MCR and +MRR to DTE +MRR=m, n Report Transmit m and Receive n DCE rates to DTE 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems Table 5. Command +PCW +PCM +PIG +PMH up, assumes +PMHF ...
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... Receive Data with n protocol +FRS=<time> Wait for silence +FTM=n Transmit Data with n protocol Figure 5. Schematic Illustrating Implementation of Voice Injection Feature. 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems Table 5. Function Command +FRH=n +FTH=n +FTS=<time> +FTS=n ...
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... Factory Default values that are different from the Firmware Default values are highlighted in BOLD. 4. Restore Factory Default values using Zn command. 5. Restore Firmware Default values using &Fn command. 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems Table 6. S-Register Summary. ...
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... Optional External Over Voltage and Lightning Protection. In most environments, the internal two terminal surge suppressor (see dashed Box 3) is adequate. 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems For severe environments, use an external three terminal device with an earth ground as is shown in dashed Box 3 ...
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... Input Current (RST Capacitive Load (TXD, DTR, RTS) p Capacitive Load (RST) 1. Output Load = 50 pF ± one TTL. 2. With recommended 30k ohm external resistor. Maximum resistor range: 10k to 100k ohm. 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems Characteristic ...
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... Inter Character Delay Command Delay 100 Minimum Reset Pulse Duration Note: Must wait for modem response before issuing a new command. Name Type SPK O(DF) PIN NO 2007 Cermetek Microelectronics, Inc. Table 8. HS Modem Electrical Specifications. Typ. Max. Units 20 Ohm 25 dB 250V 100 0.0 +0 ...
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... Pin placement to outside case edge is nominal ± 0.100 inches. Figure 7B. Physical Dimensions ONLY for the CH179XA-B, CH2056A-B, CH179XA-L, CH2056A-L and CH179XAR-B, CH2056AR-B, CH179XAR-L, CH2056AR-L and extended temperature variations of listed products. 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems Page 22 Document No. 607-0020 Revision B (01/07) ...
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... Approved, UL 60950 Listed, Industry Canada Registered CS-03 Part I CH1799A-CP Full Function with Caller ID (CID) and Zero Power Down, 33.6kbps, FCC Part 68 Approved, UL 60950 Listed, Industry Canada Registered CS-03 Part I 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems Summary of Features Page 23 Operating Temperature 0° 70°C 0° ...
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... CH2056A ET-H Full Function with Off-Hook Indication (OHI), 56.0kbps, FCC Part 68 Approved, UL 60950 Listed, Industry Canada Registered CS-03 Part I CH2056A ET-P Full Function with Zero Power Down, 56.0kbps, FCC Part 68 Approved, UL 60950 Listed CH2056A ET-CP Full Function with Caller ID (CID) and Zero Power Down, 56.0kbps, FCC Part 68 Approved, UL 60950 Listed ...
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... Part I CH1799AR-CP Full Function with Caller ID (CID) and Zero Power Down, 33.6kbps, FCC Part 68 Approved, UL 60950 Listed, Industry Canada Registered CS-03 Part I 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems Page 25 Document No. 607-0020 Revision B (01/07) Operating Temperature 0° 70°C 0° ...
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... Full Function with Zero Power Down, 56.0kbps, FCC Part 68 Approved, UL 60950 Listed CH2056AR ET-CP Full Function with Caller ID (CID) and Zero Power Down, 56.0kbps, FCC Part 68 Approved, UL 60950 Listed 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems Summary of Features Page 26 Operating Temperature -40° ...
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... Therefore, for FCC and IC Approved or Approvable devices, the user assumes all risk for maintaining compliance to registration. 1390 BORREGAS AVENUE | SUNNYVALE CA 94089 CERMETEK WEB SITE: 2007 Cermetek Microelectronics, Inc. CH179XA/2056A High Speed Family of Ultra Small Modems Table 11A and 11B Notes: | LOCAL: 408-752-5000 | TOLL FREE: 1-800-882-6271 http://www ...