DMP 2200  (260-1279)              Pinouts              Faxback Doc. # 4557

PARALLEL INTERFACE CONNECTOR

Type.............36-pin receptacle
Model............552742-1 or equivalent
Manufacturer.....AMP or equivalent

PIN ASSIGNMENT


                     18                               1
            ┌────────────────────────────────────────────────┐
            │  ┌───┬┬┬┬┬┬──────────────────────────┬┬┬┬┬┬─┐  │
            │  │   └┘└┘└┘                          └┘└┘└┘ │  │
            │  │   ┌┐┌┐┌┐                          ┌┐┌┐┌┐ │  │
            │  └───┴┴┴┴┴┴──────────────────────────┴┴┴┴┴┴─┘  │
            └────────────────────────────────────────────────┘
                     36                              19

SIGNALS

SIGNAL      NAME OF SIGNAL      SIGNAL        NAME OF SIGNAL
 PIN                             PIN

  1         STROBE                19         OV (Return for 1)
  2         DATA 1                20         OV (Return for 2)
  3         DATA 2                21         OV (Return for 3)
  4         DATA 3                22         OV (Return for 4)
  5         DATA 4                23         OV (Return for 5)
  6         DATA 5                24         OV (Return for 6)
  7         DATA 6                25         OV (Return for 7)
  8         DATA 7                26         OV (Return for 8)
  9         DATA 8                27         OV (Return for 9)
 10         ACK                   28         OV (Return for 10)
 11         BUSY                  29         OV (Return for 11)
 12         PE (Paper Out)        30         OV
 13         BUSY                  31         NC (Not Connected)
 14         OV                    32         FAULT (Printer Error Condition)
 15         NC (Not Connected)    33         INIT (Initialize)
 16         OV                    34         NC (Not Connected)
 17         CHASSIS GROUND        35         NC (Not Connected)
 18         +5V (80 mA Maximum)   36         NC (Not Connected)
──────────────────────────────────────────────────────────────────────────────

PARALLEL INTERFACE SIGNALS
             _____ ________________________________________________ _________
DATA BIT 1-8 _____X________________________________________________X_________

DATA STROBE* ───────┐    ┌───────────────────────────────────────────────────
                    └────┘ Max. 0.5 us
      ─────────────>|──|<────────────────────────
                    |  |
                       ┌───────────────────────────────────┐
BUSY         ──────────┘                                   └─────────────────
             ──────────┐                                   ┌─────────────────
                       └───────────────────────────────────┘    Max. 5 us
                                                        ──>|──|<─────────────
                                                           |  |
             ──────────────────────────────────────┐          ┌──────────────
                                                   └──────────┘

TIMING DIAGRAM
______
STROBE - (Host Generated)
    ______
The STROBE signal is a negative-going pulse which is used to transfer 
incoming data from the host into the Printer. The pulse duration must be a 
minimum of 0.5 us. The relationship of the leading and trailing edges of 
the STROBE signal with the leading and trailing edges of the input data 
signals must be as shown in the Timing diagram.

DB1-DB8 - (Host Generated)

Data Bits DB1 - DB8 contain ASCII character data information. Data bit 
levels are positive true logic.
___________
ACKNOWLEDGE - (Printer Generated)

The ACK signal is a negative-going signal which indicates, by the rising 
edge, that the Printer is no longer busy. The timing is as shown in the 
Timing Diagram.

BUSY - (Printer Generated)

The BUSY signal goes positive to indicate when the Printer can not accept 
new data from the host. The Timing is as shown in the Timing Diagram. On 
power-up, BUSY must go true, and remain true until Printer is ready to 
accept data.

PAPER OUT - (Printer Generated)

The PE signal is a positive-going pulse which indicates that the Printer is 
out of paper.
____
BUSY - (Printer Generated)

The BUSY signal is the logical inverse of BUSY.

FAULT - (Printer Generated)
    _____
The FAULT line is a negative going signal that indicates there is a fault 
condition present; i.e. - paper out, cover open, logic fault, off-line 
condition, or other mechanical fault.
____
INIT - (Host Generated)
                                                           ____
This terminal is valid only when IBM Mode is selected. The INIT is a 
negative going signal which resets the printer controller to its initial 
state and clears the print buffer. It must be terminated high and must be 
10us width minimum.

CHASSIS GROUND

This line is connected to the chassis of the Printer.

5V - (Printer Generated)

This line is connected to the Printer's logic +5V line. The maximum supply 
current is 80mA.

(dtc-07/26/93)