Ref: 99980018
Title: Useful Tables
Date: 1/1/88

Copyright 3Com Corporation, 1991.  All rights reserved.

.h1;Auxil and Console Port Configs

         AUXILIARY AND CONSOLE PORT CONFIGURATIONS

            Characteristics        Setting
         -----------------------------------------
            Baud rate*              9600
            Data bits               8
            DTR                     Ignored
            Duplex                  Full
            Echo                    On
            Flow Control            XON/XOFF
            Parity                  None
            Stop bits               1

        * Baud rate can be modified on GSs with an MCPU20
          via the firmware configuration program, and by changing
          the appropriate shorting plug configuration on GSs with
          an MCPU.

.h1;Auxil and Console Port Baud

             Console/Auxiliary Port Baud Rate
       Shorting Plug Positions; Configuration Area E1
       ----------------------------------------------
                     Console Port      Auxiliary Port
       Baud Rate    Pin D   Pin E      Pin I    Pin J

       9600*        Out     Out        Out      Out
       1200         Out     In         Out      In
       300          In      Out        In       Out
       110          In      In         In       In
                     * Factory default.
.h1;SIO Board Number/Plug Positions

                 SIO Board Number and
          Multibus Interrupt Level Assignment
               Shorting Plug Positions
-----------------------------------------------------
E22A    E22B    E59 Pins    Board   Interrupt   Slot
               Connected     No.      Level      ID

Out     Out      10-11      SIO 1*      4        H
In      Out       7-8       SIO 2       5        G
Out     In        4-5       SIO 3       6        F
In      In        1-2       SIO 4       7        E
   * Factory default for boards shipped separately.

.h1;SIO-442 Clock Source Plug Pos.

     SIO-422S Clock Source Shorting Plug Positions
---------------------------------------------------------------
Port    Clock       Line    E49 Pins     E69 Pins      E70 Pins
       Source       Name   Connected    Connected     Connected

 0   TX External     ST       1-2          2-3           2-3
 0   TX Internal     TT       2-3*         1-2*          1-2*
 0   RX External     RT       4-5*         n/a           n/a
 0   RX Internal     --       5-6          n/a           n/a

 1   TX External     ST       7-8          5-6           5-6
 1   TX Internal     TT       8-9*         4-5*          4-5*
 1   RX External     RT      10-11*        n/a           n/a
 1   RX Internal     --      11-12         n/a           n/a
           * Factory default, user-alterable.

.h1;SIO-SMS Clock Plug Positions

         SIO-SMS Clock Source Shorting Plug Position
----------------------------------------------------------------
Port    Clock       Line    E49 Pins     E69 Pins      E70 Pins
       Source       Name   Connected    Connected     Connected

 0   TX External    TXC       1-2*         1-2**         2-3*
 0   TX Internal    EXC       2-3          1-2**         1-2
 0   RX External    RXC       4-5*         n/a           n/a
 0   RX Internal     --       5-6          n/a           n/a

 1   TX External    TXC       7-8*         4-5**         5-6*
 1   TX Internal    EXC       8-9         4-5**         4-5
 1   RX External    RXC      10-11*        n/a           n/a
 1   RX Internal     --      11-12         n/a           n/a
               * Factory default, user-alterable
              ** Factory default, not user-alterable.

.h1;SIO-V.35S Clock Plug Positions

      SIO-V.35S Clock Source Shorting Plug Positions
----------------------------------------------------------------
Port    Clock       Line    E49 Pins     E69 Pins      E70 Pins
       Source       Name   Connected    Connected     Connected

 0   TX External    SCT       1-2*         2-3*          2-3*
 0   TX Internal    SCTE      2-3          1-2           1-2
 0   RX External    SCR       4-5*         n/a           n/a
 0   RX Internal     --       5-6          n/a           n/a

 1   TX External    SCT       7-8*         5-6*          5-6*
 1   TX Internal    SCTE      8-9          4-5           4-5
 1   RX External    SCR      10-11*        n/a           n/a
 1   RX Internal     --      11-12         n/a           n/a
               * Factory default, user-alterable

.h1;GS Backpanel Connector Assemblies

              GS Backpanel Connector Assemblies
------------------------------------------------------------------
 GS          Backpanel       Associated Network  Type of Attached
             Network or Line   Interface Board       Assembly

GS/1-X.25  Ethernet               EC/2                 EBA
           Serial RS-422 line*    SIO-422S             SBA-422
           Serial RS-232 line*    SIO-SMS              SBA-SM
           Serial V.35 line       SIO-V.35S            SBA-V.35

GS/1-IP    Ethernet               EC/2                 EBA
           Broadband              IBM/M                BBA-37
           Token Ring             TRC/M                TBA
           Serial RS-422 line*    SIO-422S             SBA-422
           Serial RS-232 line*    SIO-SMS              SBA-SM
           Serial V.35 line*      SIO-V.35S            SBA-V.35

GS/3       Ethernet               EC/2                 EBA
           Serial RS-422 line*    SIO-422S             SBA-422
           Serial RS-232 line*    SIO-SMS              SBA-SM
           Serial V.35 line*      SIO-V.35S            SBA-V.35

GS/3-IP    Ethernet               EC/2                 EBA
           Serial RS-422 line*    SIO-422S             SBA-422
           Serial RS-232 line*    SIO-SMS              SBA-SM
           Serial V.35 line*      SIO-S.35S            SBA-V.35
                 *  If present

.h1;SBA-SM Clock Shorting Plug
           SBA-SM Clock Source Shorting Plug Positions
------------------------------------------------------------------
Port          Clock            Line              Pins Connected
 No.         Source            Name              E0          E1

 0         TX External*        TXC               1-2
 0         TX Internal         EXC               2-3

 1         TX External*        TXC                            1-2
 1         TX Internal         EXC                            2-3
                    * Factory default.


.h1;Connector Pin Assignments

.h2;EBA Assembly Transceiver

       EBA Assembly Transceiver Connector Pin Assignments
 -----------------------------------------------------------------
Pin No. IEEE 802.3      Use Circuit Name          Function

   1     CI-S       Control In circuit Shield   Not connected
   2     CI-A       Control In circuit A        Collision
                                                Presence +
   3     DO-A       Data Out circuit A          Transmit +
   4     DI-S       Data In circuit Shield      Receive Shield*
   5     DI-A       Data In circuit A           Receive +
   6     Vc         Voltage Common              Power Return
   7     CO-A       Control Out circuit A       Control Out +
                                                (Unsupported)*
   8     CO-S       Control Out circuit Shield  Control Out
                                                Shield*
   9     CI-B       Control IN circuit B        Collision
                                                Presence -
  10     DO-B       Data Out circuit B          Transmit -
  11     DO-S       Data Out circuit Shield     Transmit Shield*
  12     DI-B       Data In circuit B           Receive -
  13     VP         Voltage Plus                Power**
  14     VS         Voltage Shield              Power Shield*
  15     CO-B       Control Out circuit B       Control Out -
                                                (Unsupported)
Shell    PG         Productive Ground;          Chassis ground
                    Conductive Shell
                * Attached to power return
               ** Current should not exceed 500 mA.

.h2;Console/Auxiliary lt

          Console and Auxiliary Connector Pin Assignments
------------------------------------------------------------------
            RS-232-C*
Pin No.       Name       Direction             Function
------------------------------------------------------------------
  1            AA           --             Protective Ground
  2            BA           In             Transmit Data
  3            BB          Out             Receive Data
 4-6           --           --             Unused
  7            AB           --             Signal Ground
                                           (Common Return)
 8-25          --           --             Unused

            * DCE TYPE

.h2;Broadband Modem

           Broadband Modem Connector Pin Assignments
---------------------------------------------------------
Pin No.        Pin Name               Function
---------------------------------------------------------
1            TXD +                  Transmit Data
2            TXC +                  Transmit Clock
3            TXC -                  Transmit Clock
4            STXD +                 Serial Transmit Data
                                    Modem Control
5            STXD -                 Serial Transmit Data
                                    Modem Control
6            CDT -                  Collision Detect
7            CDT +                  Collision Detect
8            CRS +                  Carrier Sense
9            CRS -                  Carrier Sense
10           RXD +                  Receive Data
11           RXD -                  Receive Data
12           RXC -                  Receive Clock
13           RXC +                  Receive Clock
14           SRXD -                 Serial Receive Data
                                    Modem Control
15           SRXD +                 Serial Receive Data
                                    Modem Control
16           Signal Ground          Ground
17-19        +12 VDC
20           TXD -                  Transmit Data
21           RTS -                  Request to Send
22           RTS +                  Request to Send
23-27        +5 VDC
28-30        Signal Ground          Ground
31-33        -12 VDC
34-35        Signal Ground          Ground
36-37        +12 VDC

.h2;TBA DB-9/Screw-to-Jack Screw

     TBA DB-9 Connector Pin Assignments
       Screw-to-Jack Screw Mounting
--------------------------------------------------
 DB-9      Wire        Signal      Function
Pin No.    Color        Name
--------------------------------------------------
  1        Red        Receive -    Receive data -
  5        Black      Transmit -   Transmit data -
  6        Green      Receive +    Receive data +
  9        Orange     Transmit +   Transmit data +

.h2;SBA-422

         SBA-422 Connector Pin Assignments
------------------------------------------------------
Pin        RS-449
No.         Name     Direction       Function
------------------------------------------------------
1          Shield       --         Chassis Ground*
2,3        --           --         Unused
4          SD-A         Out        Send Data - A
5          --           --         Unused
6          RD-A         In         Receive Data - A
7          --           --         Unused
8          RT-A         In         Receive Timming - A
9-11       --           --         Unused
12         TR-A         Out        Terminal Ready - A
13         RR-A         In         Receiver Ready - A
14-16      --           --         Unused
17         TT-A         Out        Terminal Timing - A
18         --           --         Unused
19         SG           --         Signal Ground
20,21      --           --         Unused
22         SD-B         Out        Send Data - B
23         --           --         Unused
24         RD-B         In         Receive Data - B
25         --           --         Unused
26         RT-B         In         Receive Timing - B
27-29      --           --         Unused
30         TR-B         Out        Terminal Ready - B
31         RR-B         In         Receiver Ready - B
32-34      --           --         Unused
35         TT-B         Out        Terminal Timing - B**
36-37      --           --         Unused

 * Cable shield should be connected to this pin.
** For application requiring ST rather than TT, shorting plugs
must be in place in configuration areas E69 and E70 on the SIO-
422S, and a modified cable must be used.

.h2;SBA-SM

        SBA-SM Connector Pin Assignments
------------------------------------------------------------------
Pin     RS-232-C      Bridge
No.       Name         Name    Direction        Function
------------------------------------------------------------------
1          AA          --         --         Chassis Ground*
2          BA          TXD/       Out        Transmit Data
3          BB          RXD/       In         Receive Data
4          CA          RTS        Out        Request to Send
5          CB          CTS        In         Clear to Send
6          CC          DSR        In         Data Set Ready
7          AB          GND        --         Signal Ground
8          CF          DCD        In         Data Carrier Detect
9-14       --          --         --         Unused
15         DB          TXC        In         Transmit Clock**
16         --          --         --         Unused
17         DD          RXC        In         Receive Clock
18         --          --         Out        Spare
19         --          --         --         Unused
20         CD          DTR        Out        Data Terminal Ready
21         CG          --         In         Spare
22         --          --         --         Unused
23         CH          --         Out        Spare
24         DA          EXC        Out        External Clock**
25         --          --         --         Unused

 * Cable shield should be connected to this pin.
** Either Transmist Clock or External Clock can be selected, but
   not both.

.h2;SBA-V.35

          SBA-V.35 Connector Pin Assignments
----------------------------------------------------------------
Pin     V.35
No.     Name       Direction           Function
----------------------------------------------------------------
A      SHIELD        --             Chassis Ground*
B      S.GND         --             Signal Ground
C      RTS           Out            Ready to Send
D      CTS           In             Clear to Send
E      DSR**         In             Not Supported
F      DCD           In             Data Carrier Detect
G      --            --             Unused
H      DTR**         In             Data Terminal Ready
I-N    --            --             Unused
P      SD-A          Out            Send Data - A
Q      --            --             Unused
R      RD-A          In             Receive Data - A
S      SD-B          Out            Send Data - B
T      RD-B          In             Receive Data -B
U      --            --             Unused
V      SCR-A         In             Receive Clock - A
W      --            --             Unused
X      SCR-B         In             Receive Clock - B
Y      SCT-A         In***          Transmit Clock - A
Z      --            --             Unused
a      SCT-B         In***          Transmit Clock - B
b-n    --            --             Unused

   * Cable shield should be connected to this pin.
  ** Nonstandard use of DSR and DTR lines; in V.35 specification,
     DSR is implemented on pin E and DTR is not implemented.
 *** For applications requiring SCTE rather than SCT, shorting
     plugs must be in place in configuration areas E69 and E70 on
     the SIO-V.35S, and a modified cable must be used.
