SILICOM CONNECTIVITY SOLUTIONS, INC.

ETHERMODEM/SEM28 (ETHERNET + 28.8KBPS MODEM)

Card Type                    Fax, Modem (synchronous/asynchronous),
                             Network Interface Card
Chip Set                     Unidentified
I/O Options                  Ethernet 10Base2 connector, Ethernet 10BaseT
                             connector
NIC Type                     Ethernet
Network Transfer Rate        10Mbps
Maximum Modem Rate           28.8Kbps
Maximum Fax Rate             14.4Kbps
Data Bus                     PCMCIA Type II
Fax Class                    Class I & II
Data Modulation Protocol     Bell 103/212A

                             ITU-T V.21, V.22, V.22bis, V.23, V.32,
                             V.32bis, V.34

                             Rockwell V.FC
Fax Modulation Protocol      ITU-T V.17, V.21CH2, V.27ter, V.29
Error Correction/Compression MNP5, MNP10, V.42, V.42bis
Topology                     Linear Bus, Star
Wiring Type                  Unshielded twisted pair

                             RG-58A/U 50ohm coaxial
Boot ROM                     Not available

[Image]

                                CONNECTIONS

       Function           Label             Function              Label

  10BASE-2 - RG-58A/U         CN1       10BASE-T - Unshielded      CN2
  50ohm coaxial                         twisted pair

                             DIAGNOSTIC LED(S)

    LED         Color          Status                 Condition

   LED 1        Yellow           On             Link integrity good on
                                                 10BASE-T connection

   LED 1        Yellow           Off           Link integrity broken on
                                                 10BASE-T connection

   LED 2        Green         Blinking        Sending or receiving data

   LED 2        Green            Off           Not sending or receiving
                                                        data

                           SUPPORTED COMMAND SET

                             Basic AT Commands

  AT, ‘Comma’, A/

  A, B, C, E, H, L, M, N, O, P, Q, S, T, V, W, X, Y, Z

  &C, &D, &F, &G, &J, &K, &L, &M, &P, &Q, &R, &S, &T

  &V, &W, &X, &Y, &Z

                           Extended AT Commands

  \A, \B, \G, \K, \L, \N, %C, %E, %l, %Q, %TT

                                S Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S16, S18, S25,
  S26, S29, S30

  S32, S33, S37, S38, S39, S46, S48, S82, S86, S91, S92, S95, S99, S201

                             Special Commands

  )M, *H, -K, -Q, @M, :E, #CID

  Note: See MHI Help file for full command documentation.

                         Proprietary AT Command Set

      BIT MAPPED REGISTERS

    Register        Default

      S14        Unidentified

      S21        Unidentified

      S22        Unidentified

      S23        Unidentified

      S27        Unidentified

      S28        Unidentified

      S31        Unidentified

      S40        Unidentified

      S41        Unidentified

                           MODULATION SELECTION

  Type:          Configuration

  Format:        AT [cmds] Fn [cmds]

  Description:   Controls which modulation the modem uses to connect with

    Command                              Function

       F0         Auto-detect mode, same as ATN1

       F1         Selects V.21 or Bell 103

       F3         Selects V.23 line modulation

       F4         Selects V.22 or Bell 212A 1200bps line speed

       F5         Selects V.22bis line modulation

       F6         Selects V.32bis or V.32 4800 line modulation

       F7         Selects V.32bis 7200 line modulation

       F8         SelectsV.32bis or V.32 9600 line modulation

       F9         Selects V.32bis 12000 line modulation

      F10         Selects V.32bis 14400 line modulation

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested

    Command                              Function

       I0        Reports product code

       I1        Reports ROM checksum

       I2        Tests and reports ROM checksum

       I3        Reports firmware revision, model and interface type

       I4        Reports response programmed by OEM

       I5        Report country code

       I6        Reports modem data pump model

                          PROPRIETARY S-REGISTERS

       Register                Function                  Default

         S202            Remote access escape          Unidentified
                              character