TOPIC:  WY30 PINOUT INFORMATION.

DATE:   06/01/90

PRODUCT:        WY-30

THE ISSUE:
        WY30 PINOUT INFORMATION.

RESOLUTION:
                PORT INFORMATION  (NUMBER OF PORTS 2)
        ===========================================================
        MODEM PORT - DB25 FEMALE CONNECTOR (DTE) RS232 ONLY.

                PIN 1     FRAME GROUND
                PIN 2     TRANSMIT DATA           OUTPUT
                PIN 3     RECEIVE DATA            INPUT
                PIN 4     REQUEST TO SEND         OUTPUT
                PIN 5     CLEAR TO SEND           INPUT
                PIN 7     SIGNAL GROUND
                PIN 8     DATA CARRIER DETECT     INPUT
                PIN 20    DATA TERMINAL READY     OUTPUT

                PIN 20 IS THE HARDWARE HANDSHAKE LINE.

        AUX PORT - DB25 FEMALE CONNECTOR (DCE) RS232 ONLY.

                PIN 1     FRAME GROUND
                PIN 2     NOT USED
                PIN 3     RECEIVE DATA            OUTPUT
                PIN 4     NOT USED
                PIN 5     CLEAR TO SEND           OUTPUT ALWAYS HIGH
                PIN 6     DATA SET READY          OUTPUT ALWAYS HIGH
                PIN 7     SIGNAL GROUND
                PIN 8     DATA CARRIER DETECT     OUTPUT ALWAYS HIGH
                PIN 11    DATA TERMINAL READY     INPUT
                PIN 20    DATA TERMINAL READY     INPUT

                PIN 11 OR PIN 20 CAN BE USED FOR HARDWARE HANDSHAKING.

                NOTE: PIN 11 AND PIN 20 ARE INTERNALLY CONNECTED. ONLY ONE
                      SHOULD BE CONNECTED WHEN INTERFACING TO THE AUX PORT.

        FLOW CONTROL:

                MODEM PORT - SELECTED IN SETUP BY THE HANDSHAKE FIELD.
                        NONE      NO HANDSHAKING ON THE MODEM PORT.
                        XON/XOFF  XON/XOFF HANDSHAKING USED ON THE MODEM PORT.
                        DTR       DTR HANDSHAKING USED ON THE MODEM PORT.
                        BOTH      BOTH TYPES OF HANDSHAKING USED.

                AUX PORT - NOT SELECTABLE.
                        THE AUX PORT WILL ONLY USE DTR HANDSHAKING.

        ADDITIONAL INFORMATION:
                HIGH WATER MARK - 192 CHARACTERS OR 75%.
                LOW WATER MARK - 64 CHARACTERS OR 25%.
                MAX BAUD RATE - 38,400 MODEM AND AUX PORT
                DATA BITS - 7 OR 8
                STOP BITS - 1 OR 2
                PARITY - NONE, ODD, EVEN, OR MARK.

        NOTE: SETUP SELECTION FOR BAUD RATE, DATA BITS, STOP BITS, AND
              PARITY AFFECT BOTH MODEM AND AUX PORTS.

=-=-=-=-=-=-=-=-=-=-=-=-=- DISCLAIMER =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  This information is intended to inform WYSE personnel and WYSE
  customers of certain issues in a timely fashion. The information
  has not been extensively verified or tested. WYSE does not warrant
  the information to be correct, although reasonable effort has been
  taken to prevent gross inaccuracies. WYSE publishes formal technical
  communiques in the form of Product Bulletins and warrants the data
  in Product Bulletins to be accurate at the time of the release.