Interface Specifications; Parallel Interface; Compatibility Mode Of Parallel Lntetface; Reverse Mode - Epson C11C605001 - DFX 9000 B/W Dot-matrix Printer Service Manual

1.3 INTERFACE SPECIFICATIONS

The EPL-9000 is equipped with the following external interfaces:

Parallel interface

Optional LocalTalk interface
Optional Type B interface
1.3.1 Parallel Interface
The parallel interface has two modes as follows:

Reverse mode

1.3.1.1 Compatibility Mode of Parallel Interface
STROBE synchronization, 8-bit parallel data transfer
System:
BUSY and ACKNLG signals
Handshaking:
Connector type:
Applicable plug: 57-30360 (Arnphenol or equivalent)
Approximately 400,000 bytes/second (max.)
Transfer speed:
See Figure 1-3.
Signal timing:
See Table 1-8.
Signal description:
DATA 1-8
S T R O B E
B U S Y

Figure 1-3. Compatibility Mode Signal Timing

Rev. A
(minimum) (minimum)
I I
(minimum)
\ -
0 s
0 . 5 o r 5pS (min.)
(minimum)
\
I
1 or IOps
(typical)
General Description
VALID
\
1-11