Epson EPL-5700 Reference Manual page 93

Pin No. Direction
18 OUT
19 - 30
31 IN
32 OUT
33
34
35 OUT
36 IN
Note:
The column heading "Direction" refers to the direction of signal flow in
to or out of the printer.
nStrobe/HostClk
Compatibility mode: Latch pulse used to read in print data. When
low, DATA is valid
Negotiation phase: Latch pulse used to read in extensibility
request values
Nibble mode: Always high
ECP mode: Used to transfer data and addresses from the host to
the printer with handshaking via PeriphAck (Busy)
DATA1 to DATA8 (bidirectional, but may always be an input if
ECP or EPP mode is not supported)
Compatibility mode: Forward channel data
Negotiation phase: Extensibility request value
IEEE 1284-B connector
Compatibility
PeripheralLogicHigh
nlnit
nFault nDataAvail
nSelectln
Nibble
GND
nReverse
Request
nPeriphRequest
GND
NC
+5V
IEEE1284 Active
Technical Specifications
ECP
A
A-7