Interface Specifications; Parallel Interface (Forward Channel); Parallel Interface (Reverse Channel) - Epson 2180 - LQ B/W Dot-matrix Printer Service Manual

LQ-2180

1.2.2 Interface Specifications

This section only provides information which is specific to the LQ-2180.
For other information, refer to the LQ-2170 Service Manual.

1.2.2.1 Parallel Interface (Forward Channel)

† Transmission mode:
IEEE-1284 compatibility mode
† Signal level:
TTL compatible
(IEEE-1284 level 1 device)
† Pin assignment:
The pin assignment (forward channel) is
the same as for the LQ-2170 except for
the functions of the pins below:
Pin No. Function
This line is pulled up to +5 V through 3.9 k
18
This line is pulled up to +5 V through 1.0 k
35
Product Description

1.2.2.2 Parallel Interface (Reverse Channel)

† Transmission mode:
† Synchronization:
† Handshaking:
† Signal level:
† Data transmission timing: Refer to the IEEE-1284 specification
† Device ID:
resistor.
resistor.
† Pin assignment:
Pin No. Function
18
35
Firmware Specifications
IEEE-1284 nibble mode
Refer to the IEEE-1284 specification
Refer to the IEEE-1284 specification
IEEE-1284 level 1 device
[00H][4DH]
MFG: EPSON;
CMD: ESCPL2,PRPXL24,BDC;
MDL: LQ-2180;
CLS: PRINTER;
DES: EPSON[SP]LQ-2180;
The pin assignment (reverse channel) is
the same as for the LQ-2170 except for
the functions of the pins below:
This line is pulled up to +5 V through 3.9 k
This line is pulled up to +5 V through 1.0 k
Revision A
resistor.
resistor.
18