Interface Specifications - Epson LQ-300 Service Manual

1.3 INTERFACE SPECIFICATIONS

which can be selected in default setting mode. Auto selection is also available.
1.3.1 Parallel Interface
The parallel interface has two modes:
. Compatible mode
Reverse mode
1.3.1.1 Compatible Mode
Data format:
Synchronization:
Handshaking:
Signal level:
Adaptable comector:
Data transmission timing:
Transition time (rise time and fall time) of every input signal must be less than 0.2 ps.
Note:
BUSY
DATA
S T R O B E
The BUSY signal is active (HIGH) under the following conditions:
. During data reception (See Figure 1-6.)
When the innt buffer is full
. When the INIT input signal is active
. During a printer error
. During the self-test mode
. During the default setting mode
. When the parallel interface is not selected
The ERROR signal is active (LOW) under the following conditions:
. When a paper-out error occurs
. When a release lever operation error occurs
When a fatal error occurs
The PE signal is active (HIGH) under the following conditions:
paper-out error occurs
When a
Rev. A
8-bit parallel
By STROBE pulse synchronization
By BUSY and ACKNLG signals
36-pin 57-30360 (Amphenol) or equivalent
See Figure 1-6.
—
.
Figure 1-6. Data Transmission Timing
Product Description
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