DMM 14.4 / DMM 33.6 V1 336.pdf · DMM 14.4 / 33.6 4 2. Host Interface The modem fits into a standard DIL40 socket (600mil, pitch 100mil (2,54mm)) The DMM 14.4 / 33.6 implements a

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1. IMPORTANT INFORMATION ........................................................................................................................... 3

2. HOST INTERFACE ............................................................................................................................................... 4

3. TECHNICAL DATA .............................................................................................................................................. 5

4. AT COMMANDS.................................................................................................................................................... 6

4.1. INITIALISATION AFTER POWERUP OR RESET .......................................................................................................... 6

TABLE 1. BASIC AT COMMAND SET (COMMAND DEFAULTS IN BOLD) .......................................................................... 7

4.2. TABLE 2. EXTENDED AT& COMMAND SET (COMMAND DEFAULTS IN BOLD) .................................................... 10

4.3. TABLE 3. EXTENDED AT% COMMAND SET (COMMAND DEFAULTS IN BOLD) .................................................... 11

4.4. TABLE 4. EXTENDED AT\ COMMAND SET (COMMAND DEFAULTS IN BOLD) ...................................................... 11

4.5. TABLE 5. RESULT CODES .................................................................................................................................... 13

5. S-REGISTERS ...................................................................................................................................................... 14

5.1. TABLE 6. S-REGISTER DESCRIPTION ................................................................................................................... 14

6. USER-ACCESS REGISTERS (U-REGISTERS) .............................................................................................. 15

6.1. TABLE 7A: U-REGISTER DESCRIPTION ................................................................................................................ 15

6.2. TABLE 7B: U-REGISTER DESCRIPTION ................................................................................................................ 16

6.3. TABLE 7C: U-REGISTER DESCRIPTION ................................................................................................................ 17

6.4. TABLE 7D: U-REGISTER DESCRIPTION ................................................................................................................ 18

6.5. TABLE 7E: U-REGISTER DESCRIPTION ................................................................................................................ 19

6.6. TABLE 8: BIT-MAPPED U-REGISTER SUMMARY ................................................................................................. 19

7. BIT-MAPPED U-REGISTER DETAIL ............................................................................................................. 20

7.1. MOD1 (0X4D) .................................................................................................................................................... 20

7.2. DAA CONTROL 1 (0X62) .................................................................................................................................... 21

7.3. DAA CONTROL 4 (0X65) .................................................................................................................................... 21

7.4. DAA CONTROL 5 (0X0066) ................................................................................................................................ 22

7.5. INTERNATIONAL CONTROL 1 (0X67) ................................................................................................................... 23



7.8. INTERNATIONAL CONTROL 4 (0X6A) .................................................................................................................. 26

7.9. CLOCKING 1 (0X6E) ............................................................................................................................................ 26

7.10. I/O CONTROL (0X70) ..................................................................................................................................... 27

7.11. I/O CONTROL 1 (0X71) ................................................................................................................................... 28

7.12. CODEC 1 CONTROL (0X72) ............................................................................................................................. 28

7.13. CODEC 2 CONTROL (0X73) ............................................................................................................................. 29

7.14. GEN1 (0X76) ................................................................................................................................................. 29

7.15. GEN2 (0X77) ................................................................................................................................................. 30

7.16. GEN3 (0X78) ................................................................................................................................................. 30

7.17. GEN4 (0X79) ................................................................................................................................................. 31

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1. Important Information The modem does not support autobauding. After Power Up the default baudrate for the modem is: 19200bps, 8N1. For changing the baudrate after powerup or reset please refer AT\Tn command (page 12).

TBR21 conformity: The modem is tested according to TBR21. Please refer chapter: 4.1. Initialisation after powerup or reset for correct initialization of the modem. The modem can be used in the following countries: Belgium, Denmark, Germany, Finland, France, Greece, Ireland, Iceland, Italy, Luxembourg, Netherlands, Norway, Austria, Portugal, Sweden, Switzerland, Spain, United Kingdom.

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2. Host Interface The modem fits into a standard DIL40 socket (600mil, pitch 100mil (2,54mm))

The DMM 14.4 / 33.6 implements a full standard TTL V.24 (RS232) serial interface (RxD, TxD, CTS, RTS, DCD, DSR, DTR and RI signals).

Pinout 2 * 20 pins, pitch 2.54mm

1 - GND 40 - RXD 2 - GND 39 - TXD 3 - VCC 38 - /DTR 4 - VCC 37 - /DCD 5 - RESET 36 - nc (/DSR) 6 - /OFFHOOK 35 - /CTS 7 - nc 34 - /RTS 8 - nc 33 - /RI 9 - nc 32 - nc 10 - np 31 - np 11 - np 30 - np 12 - np 29 - np 13 - np 28 - np 14 - np 27 - np 15 - np 26 - np 16 - np 25 - np 17 - np 24 - np 18 - np 23 - np 19 - nc (a2) 22 - nc (b2) 20 - La 21 - Lb nc - not connected np - no pin

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3. Technical data

Transmission modes (all models): V.21(300bps), V.22(1200bps), V.22bis(2400bps), Bell103, Bell 212, Bell 202 Model DMM 14.4 additional: V.32, V.32bis Model DMM 33.6 additional: V.32, V.32bis, V.34 Model DMM V.90 additional: V.32, V.32bis, V.34, V.90

Error correction, data compression: V.42, V.42bis

DTMF-detection

Power Supply: +5V DC +/- 5%; alternative: 3.3V DC available

Current drain: On Line Mode ~ 30mA Serial Interface RS232, TTL-levels, 300...230.400bps

Data format 10 bits

Dialling mode DTMF, optional: Pulse Environmental:

Temperature, operating 0...+70°C, optional –40...+85°C (Industrial)

Temperature ,storage -40...+120°C

Humidity 5...95% non condensing

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User’s Guide The modem firmware supports a variation of the Hayes AT command set as its DTE interface. Originating, answering and setting up the various options are performed by sending one or more AT commands to the modem from the DTE. A brief description of the AT command syntax and the AT commands supported follows:

4. AT Commands At powerup, the DMM-Module is in the AT command mode. In command mode, the modem monitors the input, checking constantly for a valid command (AT commands are described below in Table 1) .

Command Syntax An AT command takes the form of a single letter or combination of a letter and a modified character, often followed by one or more numeric characters. The modem interprets the AT command as a direction to set a parameter or perform an action. The command (letter or letter and modifier) identifies the parameter or action, and the numeric value specifies (from a pre-determined range of choices) how the parameter is to be set or how the action is to be performed. AT commands are issued to the modem in the form of a “command line.” Each command line is preceded by the letters AT, contains one or more commands, and ends with a carriage return. The letters AT stand for “ATtention” and signal the modem that a command (or commands) will follow. It is possible to enter multiple commands on a single line (up to a maximum of 48 characters). The commands may be separated by space or line-feed characters to improve readability. The modem will ignore space and line-feed characters, so they are not counted as part of the line’s 48 characters. A carriage-return character must be entered at the end of a command line to signal the modem to process the commands.

Command Buffer Once the command line is issued to the modem, it is loaded into an internal command buffer with a capacity of 48 characters. The AT prefix, spaces, line-feed characters, and carriage return are not loaded into the buffer. If a command line is more than 48 characters long, the modem will not act on any characters.

4.1. Initialisation after powerup or reset After each powerup or reset the country depending settings must be initialised. for TBR21: AT:U4D,0002<CR>

AT:U67,002C,0010,0000<CR> AT:U46,0690<CR>

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Table 1. Basic AT Command Set (Command Defaults in Bold)

Command Action

$ Display AT command mode settings. A Answer incoming call A/ Re-execute last command. This is the only command not preceded by “AT” or

followed by a<CR>. Dn Dial

The dial command, followed by one or more dial command modifiers, manually dials a phone number:

Modifier Function ! or & Flash hook switch for FHT (U4F) msec (default: 500 msec) , or < Pause before continuing for S8 seconds (default: 2 seconds) ; Return to AT command mode P Pulse (rotary) dialing—pulse digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 T Tone (DTMF) dialing—DTMF digits: *, #, A, B, C, D, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 W Wait for dial tone before continuing for S14 seconds (default: 12 seconds).

Blind dialing modes X0, X1 and X3 do not affect the W command. En Local DTE echo

E0 Disable E1 Enable

Hn Hook switch.

H0 Go on-hook (hang up modem). H1 Go off-hook.

In Identification and checksum. I0 Display DMM revision code.

B: Revision B C: Revision C

I1 Display DMM firmware revision code (numeric). I3 Display line-side revision code.

15D = Codec revision D I6 Display the DMM model number.

‘2414’ = DMM14.4 ‘2433’ = DMM33.6

Mn Speaker operation (via AOUT).

M0 Speaker is always off. M1 Speaker is on while dialing and handshaking; off in data mode. M2 Speaker is always on. M3 Speaker is off while dialing, on during handshaking and retraining.

On Return to Data mode from Command mode operation.

O0 Return to Data mode. O1 Return to Data mode and perform a full retrain (at any speed except 300 bps). O2 Return to Data mode and perform rate renegotiation.

Qn Response mode.

Q0 Enable result codes (see Table 5 on page 9) Q1 Disable result codes (enable quiet mode).

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Sn S-register operation (see Table 6 on page 10).

S$ List contents of all S registers. Sn? Display contents of S-register n. Sn=x Set S-register n to value x (where n and x are decimal values).

Vn Result code type (see Table 5 on page 9).

V0 Numeric result codes. V1 Verbal result codes

Xn Call Progress Monitor (CPM)—This command controls which CPM signals are monitored and Reported to the host from the DMM. (See Table 5 on page 9.)

X0 Basic results; disable CPM—Blind dial (does not wait for dial tone). CONNECT

message does not include speed. X1 Extended results; disable CPM—Blind dial. CONNECT message includes speed. X2 Extended results and detect dial tone only—Add dial tone detection to X1 mode.

Does not blind dial. X3 Extended results and detect busy only—Add busy tone detection to X1 mode. X4 Extended results, full CPM—Full CPM enabled, CONNECT message includes

speed. X5 Extended results—Full CPM enabled including ringback detection. Adds ringback

detection to X4 mode. Yn Long space disconnect—Modem will hang up after 1.5 seconds or more of

continuous space while on-line. Y0 Disable. Y1 Enable.

Z Hard Reset—This command is functionally equivalent to pulsing the RESET pin low. :Dn DTMF monitor.

:D0 Disable. :D1 Enable.

:Fn Tone generator.

:F0 Disable. :F1 Enable.

:I Interrupt Read—This command causes the ISOmodem to report the lower 8 bits of

the interrupt register I/O Control 0 (U70). The RST, CID, OCD, PPD and RI bits will also be cleared and the INT pin (INT bit in parallel mode) will be deactivated on this read.

:P Program RAM Write—This command is used to upload firmware upgrades to the

DMM. The format is AT:P[file1] where [file1] is a formatted file provided by Silicon Labs. For large files, the host must send the file in blocks, waiting for an OK response from the DMM before the subsequent AT:P[file2,3,4...] command is issued. After the file is uploaded, the ATI1 command can be used to verify the firmware version number that is currently loaded.

:R User-Access Register Read—This command allows the user to read from the user-

access regis-ters.The format is “AT:Raa”, where aa = user-access address in hexadecimal. The “AT:R” command will cause all the U- registers to be displayed.

:Tn Tone monitors.

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:T0 Disable. :T1 Enable.

:U User-Access Register Write—This command allows the user to write to the 16-bit

user-access registers. The format is “AT:Uaa,xxxx,yyyy,zzzz,...”, where aa = user-access address in hexadecimal. xxxx = data in hexadecimal to be written to location aa.

yyyy = data in hexadecimal to be written to location (aa + 1). zzzz = data in hexadecimal to be written to location (aa + 2). etc...

+VCID=X Caller ID Enable.

X Mode 0 Off 1 On—formatted 2 On—raw data format

+VCDT=X Caller ID Type.

X Mode 0 After ring only 1 Always o n 2 UK 3 Japan 4 DTMF

The extended AT commands are supported by the DMM-Module and are described in Tables 2 through 4.

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4.2. Table 2. Extended AT& Command Set (Command Defaults in Bold) Command Action &$ Display AT& current settings. &Gn Line connection rate limit—This command sets a limit on the line speed that the

DMM-Module can connect. Note that the &Hn commands may limit the line speed as well (not used for &H0 or &H1).

&G5 4.8 kbps max &G6 7.2 kbps max &G7 9.6 kbps max &G8 12 kbps max &G9 14.4 kbps max (default for DMM14.4) &G10 16.8 kbps max &G11 19.2 kbps max &G12 21.6 kbps max &G13 24 kbps max &G14 26.4 kbps max &G15 28.8 kbps max &G16 31.2 kbps max &G17 33.6 kbps max (default for DMM33.6)

&Hn Switched network handshake mode

&H2 V.34 with automatic fallback (33.6 kbps to 300 bps) (default for DMM33.6) &H3 V.34 only (33.6 kbps to 2400 bps) &H4 ITU-T V.32bis with automatic fallback (14.4 kbps to 300 bps) (default for

DMM14.4) &H5 ITU-T V.32bis only (14.4 kbps to 4800 bps) &H6 ITU-T V.22bis only (2400 kbps or 1200 bps) &H7 ITU-T V.22 only (1200 bps) &H8 Bell 212 only (1200 bps) &H9 Bell 103 only (300 bps) &H10 ITU-T V.21 only (300 bps)

&Tn Test Mode

&TO Cancel Test Mode &T2 Initiate ITU-T V.54 (ANALOOP) test. Modem mode set by &H AT command. Test

loop is through the DSP (DMM device) only. DMM echoes data from TX pin (Register 0 in parallel mode) back to RX pin (Register 0 in parallel mode).

&T3 Initiate ITU-T V.54 (ANALOOP) test. Modem mode set by &H AT command. Test loop is through the DSP (DMM), DAA interface section (DMM), ISOcap interface , and analog hybrid circuit. DMM echoes data from TX pin (Register 0 in parallel mode) back to RX pin (Register 0 in parallel mode). Phone line termination required as in Figure 1. In order to test only the ISOcap link operation, the hybrid and AFE codec can be removed from the test loop by setting the DL bit (U62, bit 1).

&Z Enter low-power wake-on-ring mode.

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4.3. Table 3. Extended AT% Command Set (Command Defaults in Bold) Command Action %$ Display AT% command settings. %Cn Data compression

%C0 Disable V.42bis data compression %C1 Enable V.42bis in transmit and receive paths %C2 Enable V.42bis in transmit path only %C3 Enable V.42bis in receive path only

%On Answer mode

%O1 DMM will auto-answer a call in answer mode %O2 DMM will auto-answer a call in originate mode

4.4. Table 4. Extended AT\ Command Set (Command Defaults in Bold) Command Action \$ Display AT\ command settings. \Bn Character length

\B0 6N1—6 data bits, no parity, 1 stop bit, 1 start bit, 8 bits total (\N0 only) \B1 7N1—7 data bits, no parity, 1 stop bit, 1 start bit, 9 bits total (\N0 only) \B2 7P1—7 data bits, parity optioned by \P, 1 stop bit, 1 start bit, 10 bits total \B3 8N1—8 data bits, no parity, 1 stop bit, 1 start bit, 10 bits total \B5 8P1—8 data bits, parity optioned by \P, 1 stop bit, 1 start bit, 11 bits total (\N0 only) \B6 8X1—8 data bits, 1 escape bit, 1 stop bit, 1 start bit, 11 bits total (enables 9th-bit

escape mode) \Nn Asynchronous protocol

\N0 Wire mode (no error correction, no compression) \N3 V.42 auto-reliable—The DMM will try to connect with data compression and

error correction (V42bis and V.42). If unsuccessful, V.42 only is attempted. If unsuccessful, wire mode is attempted.

\N4 V.42 (LAPM) reliable mode (or drop call)—Same as \N3 except that the DMM will drop the call instead of connecting in wire mode.

\Pn Parity type

\P0 Even \P1 Space \P2 Odd \P3 Mark

\Qn Modem-to-DTE flow control

\Q0 Disable all flow control—Note that this may only be used if the DTE speed and the VF speed are guaranteed to match throughout the call.

\Q2 Use CTS only \Q3 Use RTS/CTS

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\Tn DTE speed \T0 300 bps \T1 600 bps \T2 1200 bps \T3 2400 bps

\T4 4800 bps \T5 7200 bps \T6 9600 bps \T7 12.0 kbps \T8 14.4 kbps \T9 19.2 kbps \T10 38.4 kbps \T11 57.6 kbps \T12 115.2 kbps \T13 230.4 kbps \T14 245.760 kbps \T15 307.200 kbps

\U Serial mode—causes a low pulse (25 ms) on RI and DCD. INT to be the inverse of ESC. RTS to be inverse of CTS. Parallel mode—causes a low pulse (25 ms) on INT. This command terminates with a RESET.

\Vn Connect message type

\V0 Report connect message and protocol message \V2 Report connect message only (exclude protocol message)

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4.5. Table 5. Result Codes

Num Meaning Verbal Response X0 X1 X2 X3 X4 X5

0 Command was successful OK X X X X X X 1 Link established at 300 bps

or higher CONNECT X X X X X X 2 Incoming ring detected RING X X X X X X 3 Link dropped NO CARRIER X X X X X X 4 Command failed ERROR X X X X X X 5 Link establish at 1200 CONNECT 1200 X X X X X 6 Dial tone not present NO DIAL TONE X X X 7 Line busy BUSY X X X 8 Remote not answering NO ANSWER X X X X X X 9 Ringback detected RINGING X 10 Link established at 2400 CONNECT 2400 X X X X X 11 Link established at 4800 CONNECT 4800 X X X X X 12 Link established at 9600 CONNECT 9600 X X X X X 14 Link established at 19200 CONNECT 19200 X X X X X 15 Link established at 7200 CONNECT 7200 X X X X X 16 Link established at 12000 CONNECT 12000 X X X X X 17 Link established at 14400 CONNECT 14400 X X X X X 18 Link established at 16800 CONNECT 16800 X X X X X 19 Link established at 21600 CONNECT 21600 X X X X X 20 Link established at 24000 CONNECT 24000 X X X X X 21 Link established at 26400 CONNECT 26400 X X X X X 22 Link established at 28800 CONNECT 28800 X X X X X 23 Link established at 31200 CONNECT 31200 X X X X X 24 Link established at 33600 CONNECT 33600 X X X X X 30 Caller ID mark detected CIDM X X X X X X 31 Hookswitch flash detected FLASH X X X X X X 32 UK CID State Tone Alert

Signal detected STAS X X X X X X 33 Overcurrent condition X X X X X X X 70 No protocol PROTOCOL: NONE Set with \V0 command. 77 V.42 protocol PROTOCOL: V.42 Set with \V0 command. 79 V.42bis protocol PROTOCOL: V.42BIS Set with \V0 command.

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5. S-Registers The S command allows reading (Sn?) or writing (Sn=x) the S-registers. The S-registers store values for functions that typically are rarely changed, such as timers or counters, and the ASCII values of control characters, such as carriage return. Table 6 summarizes the S-register set.

5.1. Table 6. S-Register Description S-Reg. Function Default Range Units (Decimal) (Decimal) 0 Automatic answer-Number of rings 0 0-255 Rings

the DMM must detect before answering a call. 0 disables auto answer.

1 Ring counter. 0 0–255 Rings 2 ESC code character. 43 (+) 0–255 ASCII 3 Carriage return character. 13 (CR) 0–255 ASCII 4 Line feed character. 10 (LF) 0–255 ASCII 5 Backspace character. 08 (BS) 0–255 ASCII 6 Dial tone wait timer—Number of seconds the DMM 02 0-255 seconds will wait before blind dialing. Only applicable if blind dialing is enabled (X0, X1, X3).

7 Carrier wait timer—Number of seconds the DMM 60 0-255 seconds will wait for carrier before timing out. This register also sets the number of seconds the modem will wait for ringback when originating a call before hanging up.

8 Dial pause timer for , and < dial command modifiers. 02 0–255 seconds 9 Carrier presence timer—Time after a loss of carrier 06 1-255 0.1 second

that a carrier must be detected before reactivating DCD. S9 is also referred to as “carrier loss debounce time.”

10 Carrier loss timer—Time the carrier must be lost 14 1-255 0.1 second before the DMM disconnects. Setting 255 dis-ables disconnect entirely. Note that if S10 is less than S9, even a momentary loss of carrier will cause a disconnect.

12 Escape code guard timer—Minimum guard time 50 1-255 0.02 second required for the DMM to recognize a valid “+++” escape sequence.

14 Wait for dial tone delay value (in relation to the W dial 12 0-255 seconds

modifier). Starts when “W” is executed.

24 Sleep Inactivity Time—Sets the time that the modem 0 0-255 seconds

will operate in normal power mode with no activities on the serial port, parallel port, or telephone line before entering low-power sleep mode. This feature is disabled if the timer is set to 0.

30 Disconnect Activity Timer—Sets the length of time that 0 0-255 minutes

the modem will stay online before disconnecting with no activity on the serial port, parallel port, or telephone line (Ring, hookswitch flash, or caller ID) before going off line and back on-hook. This feature is disabled if set to 0.

38 Hang Up Delay Time—Maximum delay between 20 0-255 seconds receipt of ATH0 command and hang up. If time out occurs before all data can be sent, the NO CARRIER (3) result code is sent (operates in V.42 mode only.) “OK” response is sent if all data is transmitted prior to timeout. S38 = 255 disables timeout and modem will only disconnect if data is successfully sent or carrier is lost.

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6. User-Access Registers (U-Registers) The :U AT command is used to write these 16-bit U-registers, and the :R command is used to read them. U-registers are identified by a hexidecimal (hex) address.

6.1. Table 7a: U-Register Description

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6.2. Table 7b: U-Register Description

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6.3. Table 7c: U-Register Description

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6.4. Table 7d: U-Register Description

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6.5. Table 7e: U-Register Description

6.6. Table 8: Bit-Mapped U-Register Summary

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7. Bit-Mapped U-Register Detail

7.1. MOD1 (0x4D)

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7.2. DAA Control 1 (0x62)


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7.5. International Control 1 (0x67)

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7.8. International Control 4 (0x6A)

7.9. Clocking 1 (0x6E)

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7.10. I/O Control (0x70)

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7.11. I/O Control 1 (0x71)

7.12. Codec 1 Control (0x72)

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7.13. Codec 2 Control (0x73)

7.14. GEN1 (0x76)

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7.15. GEN2 (0x77)

7.16. GEN3 (0x78)

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7.17. GEN4 (0x79)

Documents

DMM 14.4 / DMM 33.6 V1 336.pdf · DMM 14.4 / 33.6 4 2. Host Interface The modem fits into a standard DIL40 socket (600mil, pitch 100mil (2,54mm)) The DMM 14.4 / 33.6 implements a