1.3 INTERFACE SPECIFICATIONS
The EPL-5500 is equipped with the following external interfaces:
❏ Parallel interface
❏ Optional LocalTalk/serial interface
❏ Optional Type B interface with Type-B EX box
1.3.1 Parallel Interface
The parallel interface has the following two modes:
❏ Compatibility mode (same as parallel interface for EPSON’s current page printer)
❏ Reverse mode
1.3.1.1 Parallel Interface Compatibility Mode
System: STROBE synchronization, 8-bit parallel data transfer
Handshaking: BUSY and
ACKNLG signals
Connector type: P90-25027-1 (Amphenol) receptacle
Applicable plug: 57-30360 (Amphenol or equivalent)
Transfer speed: Approximately 400,000 bytes/second (max.)
Signal timing: See Figure 1-3.
Signal description: See Table 1-8.
DATA 1-8
STROBE
BUSY
ACKNLG
VALID VALID
0.5
µ
s
(minimum)
0.5
µ
s
(minimum)
0.5
µ
s (minimum)
0.5
µ
s (maximum)
1 or 10
µ
s
(typical)
0 s
(min.)
0.5 or 5
µ
s
(minimum)
Figure 1-3. Compatibility Mode Signal Timing
EPL-5500 Service Manual General Description
Rev. B 1-9
