Technical Specifications
A-13
Egret
Ref. Guide
paper.bk
Rev. D
A5 size
APSPEC.FM
3/18/99
Pass 0
R
Proof Sign-off:
M.Hida
_______
K.Nishi
_______
K.Norum
_______
nSelectIn/IEEE1284active
GND
Twisted pair return signal.
CG
Connected to the printer chassis. This signal and GND are
connected.
+5V
Pull up to + 5 V with 1 k
Ω
.
Ethernet Interface
You can use an IEEE 802.3 10BASE-T/100BASE-TX straight-
through shield twisted pair modular cable via RJ45 connector.
Compatibility mode
Always low.
Negotiation phase
This signal is set high at the same time that
HostBusy is low in order to request 1284
mode.
Reverse data transfer
phase
This signal is set high to indicate that the
bus direction is from the printer to the
host. This signal is set low to terminate
1284 mode, setting the bus direction from
the host to the printer.
Reverse idle phase
Same as reverse data transfer phase.
ECP mode
Always high. This signal is set low to
terminate ECP mode and return to
compatibility mode.