Epson EPL-C8000 A-12

A-12 Technical Specifications
Cardinal U/G
Rev. C
A5 size APPA.FM
11/6/98 Pass 0
LProof Sign-off:
Kimura _______
Nishi _______
Hoadley _______
nAutoFd/HostBusy/HostAck
NC
Not used.
PeripheralLogicHigh
Pull up to + 5 V with 3.9 kΩ.
Compatibility mode: Not used.
Negotiation phase: In order to request 1284 mode, this signal is
set low and IEEE 1284active (nSelectIn) i s set
high. Afterwards, this sign al is set high
whenPtrClk (nAck) is set low.
Reverse data transfer
phase: In nibble mode, setting this signal low indicates to the printer that the host is ready
to receive data. When this signal is
subsequently set high, it indicates that the
host received the data.
Reverse idle phase: This signal is set high in response to a PtrClk
(nAck) low pulse in order to return to be
reverse data phase. If this signal is set high at
the same time that IEEE 1284active
(nSelectIn) is set low, the IEEE 1284 idle
phase is aborted and the interface returns to
compatibility mode.
ECP mode: Used for reverse direction flow control. Also
used for handshaking via PeriphClk (nAck).