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insys icom i-modul 144/56k Designer'S Manual Download Page 8

Connections 

i-modul Modem 144/56k 

 

2

 

Connections 

2.1

 

PCB Layout 

 

P1 

P2 

Figure 1: PCB layout, terminal strip and fixing hole position 

Item  Type 

Description 

P1 

SAMTEC TW series 2-row 
2 mm pitch or Fischer SLY 
81 24 Z 

Serial interface, inputs and outputs 

P2 

SAMTEC TW series 2-row 
2 mm pitch or  
Plastron PQFZ-06S-VK-024 
or Fischer SLY 6 

Phone network interface 

Table 3: Specification and assignment of the terminal strips 

 

8 

 

Summary of Contents for i-modul 144/56k

Page 1: ...Designer s Guide i modul Modem 144 56k 3 0 basic...

Page 2: ......

Page 3: ...Inc IBM PC AT XT are registered trademarks of International Business Machine Cor poration INSYS e Mobility LSG and e Mobility PLC are registered trademarks of INSYS MICROELECTRONICS GmbH Windows is a...

Page 4: ...4 6 Functions 16 6 1 Automatic Baud Rate Detection 16 6 1 1 Serial Connection 16 6 1 2 Phone connection 17 6 2 Data Buffer for Serial Data Transmission 17 6 3 Bit Direct Mode 18 6 4 Data Flow Control...

Page 5: ...ace Terminal Strip P1 57 10 3 Network Interface Terminal Strip P2 for Modem ISDN 57 10 4 Antenna Connection if equipped 58 10 5 Further Recommendations 58 10 6 Reference Documents 58 11 Declaration of...

Page 6: ...ge TTL VIL 0 8 V VIH 2 V max VCC Output voltage TTL VOL 0 4 V VOH 2 4 V 3 3 V CMOS compatible Total current consumption in idle approx 150 mA Total current consumption in active state approx 160 mA To...

Page 7: ...pported data compression stan dards MNP 2 3 MNP 5 V 42 bis V 44 MNP 10 MNP 10 EC Fax class Fax Class 1 Modulation types Bell Norm 103 212 V 32bis V 32 V 23 V 22 V22 bis V21 for 56k version additionall...

Page 8: ...fixing hole position Item Type Description P1 SAMTEC TW series 2 row 2 mm pitch or Fischer SLY 81 24 Z Serial interface inputs and outputs P2 SAMTEC TW series 2 row 2 mm pitch or Plastron PQFZ 06S VK...

Page 9: ...2 signal 15 Output RI Ring Signal TTL level RS232 signal 16 Output DSR Data Set Ready TTL level RS232 signal 17 Internal connection do not use 18 Internal connection do not use 19 Internal connection...

Page 10: ...A minimum time of 0 1 s for activation is recommended to trigger the reset safely Table 6 PIN specifications reset input 2 4 2 Indication Signals Pin Signal Type Description 13 OH Output This output i...

Page 11: ...dul Modem 144 56k Connections 2 5 Connection Example for Serial Interface The following example is only valid for a power supply with VCC 5 V Figure 3 Connection example of the serial interface 5 V VC...

Page 12: ...nce on their transmission format Hardware and software data flow control The i modul Modem 144 56k 3 0 basic can signal the application via the control lines of the serial interface to interrupt the d...

Page 13: ...u or not An arrow will indicate prerequisites which must be fulfilled to be able to process the subsequent steps in a meaningful way You will also learn which software or which equipment you will need...

Page 14: ...sible direct connection of the serial interface of the i modul Modem 144 56k 3 0 basic with a typical RS232 interface of a PC overloads components of the module due to the higher voltage levels Use an...

Page 15: ...r serial port Check it and repeat step 3 4 Configure the i modul Modem 144 56k 3 0 basic using AT commands A reference of the AT commands can be found in the chapter AT Command Reference 5 Save your e...

Page 16: ...ul Modem 144 56k 3 0 basic will be checked and adjusted if necessary This is the reason why the baud rate can not be stored with the command AT W as the i modul Modem 144 56k 3 0 basic will immediatel...

Page 17: ...apter AT Command reference To display the current settings AT MS For a list of possible parameter of the command enter AT MS 6 2 Data Buffer for Serial Data Transmission The i modul Modem 144 56k 3 0...

Page 18: ...errupted as soon as the modem buffer exceeds a certain level Two data flow control options are available Via the control lines RTS and CTS or via the control characters XON XOFF which are inserted int...

Page 19: ...o the application This character will cause the application to send data to the modem again Analogously the application can insert XON XOFF characters into the data stream to switch the data flow on a...

Page 20: ...undancy Check check sums for error tests In V 42 there is the option to have the modem identify if the partner is a V 42 modem a MNP modem or a modem without error correction The modem can then autono...

Page 21: ...the same data compression mode The default setting is the automatic selection of MNP5 and V42 bis and V 44 data compression AT C3 Configuration with AT commands To select the compression type use AT C...

Page 22: ...maintained 6 8 User Profiles 6 8 1 Changing the Configuration The i modul Modem 144 56k 3 0 basic knows different user profiles Besides the default factory settings which serve for achieving a define...

Page 23: ...rrent configuration to user profile 1 use the command AT W1 6 9 Reset There are several methods to reset the i modul Modem 144 56k 3 0 basic by cutting off the supply voltage by connecting the termina...

Page 24: ...due to the higher voltage levels Use a level converter e g MAX232 to adjust both interface types correctly The firmware of the i modul Modem 144 56k 3 0 basic can be updated to add further functions...

Page 25: ...ve playing music or connecting a USB device can also disturb or interrupt the data flow As a result the i modul Modem 144 56k 3 0 basic may fail to function and only INSYS MICROELECTRONICS will be abl...

Page 26: ...he firmware such as 20B7 S37 The upload progress is again displayed by dots in the terminal window The i modul Modem 144 56k 3 0 basic indicates after successful upload Device successfully programmed...

Page 27: ...the values 0 to 3 thus e g ATL2 me dium volume The modem uses always the parameter 0 for commands which ex pect a parameter but are specified without a parameter The commands ATZ and ATZ0 for example...

Page 28: ...modul Modem 144 56k 3 0 basic sends a break signal according to the active error correction protocol without considering a parameter specification If no connection is established or if a fax connecti...

Page 29: ...n the last dialling attempt was performed The i modul Modem 144 56k 3 0 basic behaves like a data modem in the mode AT FCLASS 0 It attempts to connect to another data modem This attempt is repeated un...

Page 30: ...eived during the waiting period a connection is estab lished Dial tone delay The i modul Modem 144 56k 3 0 basic performs a dial tone delay before it executes the next character of the parame ter stri...

Page 31: ...dialling tone and continues with the rest of the dial up via 12345 only after hearing the dial ling tone Waiting for the dialling tone may be omitted In this case the dialling command is ATX3D012345 A...

Page 32: ...ading the factory default settings The i modul Modem 144 56k 3 0 basic loads the factory default settings from the internal non volatile memory With this the i modul Modem 144 56k 3 0 basic can be tak...

Page 33: ...baud rate n The following baud rates are supported 300 1 200 2 400 4 800 9 600 19 200 38 400 57 600 115 200 and 230400 The setting AT IPR is not stored with AT W AT K n Selecting data flow control be...

Page 34: ...reak immediately to the other modem AT K3 Like AT K2 AT K4 i modul Modem 144 56k 3 0 basic inserts a break into the data transmitted to the other modem AT K5 Like AT K4 Return from the online command...

Page 35: ...peaker always ON ATM3 Speaker ON during connection setup AT MR n Displaying the modulation type The command AT MR n enables the display of the modulation type after the message CONNECT AT MR 0 Switche...

Page 36: ...odel 336 V34 Parameter Modulation The modulation parameter determines the preferred automode 1 or the man datory automode 0 modulation type The following values are available V21 V 21 300 V22 V 22 120...

Page 37: ...optional parameter maxbaud determines the highest possible baud rate the i modul Modem 144 56k 3 0 basic sends with AT N n Selecting the error correction This command determines which type of error co...

Page 38: ...back or retrain is triggered if the line quality is too bad to enable a new negotiation of the connection if necessary with a slower speed High values indicate bad quality These values are constantly...

Page 39: ...Use the command AT TRV to measure the phone line voltage Tip Ring Voltage The result is yielded in volt For an existing connection the voltage range is 5 V 12 V Otherwise the voltage is higher than 2...

Page 40: ...orward fall back or retrain occurred during the connection To impact the negotiated data rate use the command AT MS PROTOCOL Displays the used error correction protocol LAPM equals a V 42 secured conn...

Page 41: ...The following countries support CLIP Australia Belgium China Denmark Germany Finland Great Britain Hong Kong India Ireland Iceland Italy Canada Korea New Zealand The Netherlands Nor way Austria Sweden...

Page 42: ...message NO CARRIER is displayed The message is displayed without specifying the speed ATX1 Like ATX0 but CONNECT message with speed information ATX2 Dialling tone detection is active i e a dialling at...

Page 43: ...T Z n xxx n Is the number of the entry in the list from 0 to 3 xxx Is the dialling string with the phone number Pause Pause Changing from data mode to command mode online command mode 1 second pause b...

Page 44: ...X 46 CARRIER 1200 X X X X X 47 CARRIER 2400 X X X X X 48 CARRIER 4800 X X X X X 49 CARRIER 7200 X X X X X 50 CARRIER 9600 X X X X X 51 CARRIER 12000 X X X X X 52 CARRIER 14400 X X X X X 53 CARRIER 16...

Page 45: ...X X X X X 162 CARRIER 56000 X X X X X 165 CONNECT 32000 X X X X X 166 CONNECT 34000 X X X X X 167 CONNECT 36000 X X X X X 168 CONNECT 38000 X X X X X 169 CONNECT 40000 X X X X X 170 CONNECT 42000 X X...

Page 46: ...R 54667 X X X X X Table 8 AT responses depending on the ATX command Notes regarding the table An X in the column indicates that a message is either sent in long or short form depending on the ATV comm...

Page 47: ...e read others only allow to enter a particular range of values If the range of values is exceeded the modem will report OK although the value was not accepted We therefore recommend to immediately che...

Page 48: ...14 S12 Transmission clock of the ESC characters 0 02 s 0 255 50 S14 General settings 138 S21 Settings for V24 52 S22 Settings 117 S24 Time period until switching into sleep mode s 0 255 0 S25 Time per...

Page 49: ...ter S5 Backspace character Backspace character S6 Waiting period for dial tone Maximum waiting time for the dialling tone After the modem went off hook it waits 7 seconds for the dialling tone fixed f...

Page 50: ...r signal and hang up The time which leads to termination after carrier frequency loss In S10 the time period for which the modem waits for the disconnection if it can no longer detect the carrier freq...

Page 51: ...t 2 3 Speaker control Speaker control 0 Off ATM0 1 On until carrier ATM1 2 Always on ATM2 3 On at establishing Bit 4 6 Error message group Limit result codes 0 like ATX0 4 like ATX1 5 like ATX2 6 like...

Page 52: ...CCITT modulation 1 Bell modulation Bit 7 Reserved Reserved S29 Time period for modifier flash Sets the time period in tenths of seconds after which the modem hangs up due to a flash in the dialling s...

Page 53: ...nnection In case of failure a direct mode connection is established 6 Reserved 7 Modem attempts to establish an MNP con nection In case of failure a normal mode connection is established Bit 3 7 Reser...

Page 54: ...e retrain Bit Meaning Bit 0 1 Select compression type Compression selection 0 No compression AT C0 1 MNP5 AT C1 2 V 42bis AT C2 3 MNP5 or V 42bis AT C3 Bit 2 Auto retrain Auto retrain control 0 No aut...

Page 55: ...ten attempts S86 14 Protocol error S86 15 DTR drop S86 16 Remote terminal demanded cleardown GSTN cleardown S86 17 Inactivity timer expired S86 18 Desired speed is not supported S86 19 Long space disc...

Page 56: ...T message with line speed Bit 1 CONNECT ARO message for error corrected connection Bit 2 CARRIER messages enabled messages 40 47 Bit 3 PROTOCOL messages enabled messages 70 80 Bit 4 Reserved Bit 5 COM...

Page 57: ...50 10 2 Application Interface Terminal Strip P1 The TTL RS232 interface should be equipped with ferrite beads directly at the module to reduce interference signals from the motherboard It is also bene...

Page 58: ...ground connections of the motherboard To save costs some of the above mentioned capacitors or ferrite beads may be omitted However they should be considered in the layout to be able to integrate it wi...

Page 59: ...out in the Council Directive on the Approximation of the Laws of the Member States relating to Electromagnetic Compatibility 2004 108 EC and the Council Directive relating to Low Voltage 2006 95 EC as...

Page 60: ...P1 9 Table 5 Terminal strip connections description terminal strip P2 9 Table 6 PIN specifications reset input 10 Table 7 PIN specifications indication signals 10 Table 8 AT responses depending on the...

Page 61: ...Dial tone 49 Dial tone delay 30 50 Dial tone detection 42 Dialling 29 DSR behaviour 39 DTR 31 51 52 Echo 32 Energy conservation mode 51 Error 37 Error correction 12 41 Error event code 55 ESC charact...

Page 62: ...1 12 Sleep mode 51 Software reset 43 Speaker 34 35 Supply 9 Symbol 13 Telephone connection quality 38 TeraTerm 14 24 Terminal program 14 24 Terminal strip 8 Terminating 32 Tone dialling method 39 Tran...

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