SPECTRUM SIGNAL PROCESSING, INC.

ENVOY II

Card Type                    Sound/Data (synchronous/asynchronous)/Fax
Maximum Data Rate            14.4Kbps
Maximum Fax Rate             9600bps
Data Bus                     16-bit ISA
Chipset Controller           DSP Technology
Fax Class                    Class I & II
I/O Options                  Microphone in, speaker out
Data Modulation Protocol     Bell 103A/212A

                             ITU-T V.21, V.22, V.22bis, V.32, V.32bis
Fax Modulation Protocol      ITU-T V.21CH2, V.27ter, V.29
Error Correction/Compression MNP5, V.42, V.42bis

[Image]

                            CONNECTIONS

        Purpose          Location         Purpose          Location

  Microphone in            J1       Telephone line in        J3

  Speaker out              J2       Telephone line out       J4

                      I/O BASE ADDRESS RANGE SELECION

     Base I/O
     address
                     ISA I/O
                    address
                                  JB6/Pins 1
                                     & 2
                                                JB6/Pins 3
                                                   & 4
                                                               JB6/Pins 5
                                                                  & 6

  »
       4E30h -
        4E3Fh
                   230h - 23Fh
                                   Closed
                                                  Closed
                                                                 Open


        130h -
        13Fh
                   130h - 13Fh
                                   Closed
                                                   Open
                                                                Closed


        1B0h -
        1BFh
                   1B0h - 1BFh
                                    Open
                                                   Open
                                                                Closed


       4EB0h -
        4EBFh
                   2B0h - 2BFh
                                    Open
                                                  Closed
                                                                 Open


       4F30h -
        4F3Fh
                   330h - 33Fh
                                   Closed
                                                   Open
                                                                 Open


       4FB0h -
        4FBFh
                   3B0h - 3BFh
                                    Open
                                                   Open
                                                                 Open

                           DMA CHANNEL SELECTION

               Channel                                 JB1

  »                  6                     Pins 9 & 10, 11 & 12 closed

                     0                      Pins 1 & 2, 3 & 4 closed

                     5                      Pins 5 & 6, 7 & 8 closed

                     COMMUNICATION PORT CONFIGURATION

       Port
                         IRQ
                                            JB5
                                                               JB4

  »
           3
                          5
                                     Pins 1 & 2, 5 & 6
                                          closed
                                                            Pins 5 & 6
                                                              closed


           4
                         2/9
                                      *Pins 1 & 2, 3 &
                                         4, 5 & 6
                                                            Pins 7 & 8
                                                              closed


           2
                          3
                                     Pins 1 & 2, 5 & 6
                                          closed
                                                            Pins 3 & 4
                                                              closed


           1
                          4
                                     Pins 1 & 2 closed
                                                            Pins 1 & 2
                                                              closed

  *Note: Pins designated are in the closed position.

                     DMA TRANSFER PER CYCLE SELECTION

                  Cycle                                  JB2

  »               4 transfers                          Closed

                  2 transfers                           Open

                          DSP INTERRUPT SELECTION

                 IRQ
                                                      JB3

  »
                    15
                                               Pins 3 & 4 closed


                    10
                                               Pins 1 & 2 closed

                   ISA CHANNEL READY DELAY CONFIGURATION

                  Setting                                JB7

  »            Not gated (Normal)                 Pins 1 & 2 closed

               Gated (Alternate)                  Pins 2 & 3 closed