Epson StylusPro 10000 Service Manual page 34

EPSON Stylus Pro 10000/10000CF
Pin No. Signal Name
HostClk
1
DATA0
2
DATA1
3
DATA2
4
DATA3
5
DATA4
6
DATA5
7
DATA6
8
DATA7
9
10 PeriphClk
PeriphAck
11
nAckReverse
12
Xflag
13
HostAck
14
nReverseRequest
31
32 nPeriphRequest
1284-Active 30
36
18 PeriphLogic-H
+5V
35
17 Chassis GND
GND
16,33,19-30
15,34 NC
Product Description
Table 1-18. Connector Pin Assignments - ECP Mode
Return GND Pin In/Out*
19 In
20 In
21 In
22 In
23 In
24 In
25 In
26 In
27 In
28 Out
29 Out
28 Out
28 Out
30 In
30 In
29 Out
30 In
- Out
- Out
- -
- -
- -
Interfaces
Functional Description
In Data or address information are transferred from a host to a printer.
The DATA0 through DATA7 signals represent data bits 0 to 7,respectively.
Each signal is at high level when data is logical 1 and low level when data is
logical 0.
These signals are used to transfer the 1284 extensibility request values to the
printer.
Data is transferred from a printer to a host.
A printer uses this signal for a flow control of forward direction. Also this signal
offers the data bit 9 that use it to judge whether or not it is information command
information or data to be output on the data signal of reverse direction.
A printer does drive to Low and approve nReverseRequest.
X-flag signal and reverse channel transfer data bit 1 or 5.
A host uses this signal for a flow control of reverse direction. Also this signal
offers the data bit 9 that use it to judge whether or not it is information command
information or data to be output on the data signal of forward direction.
This signal is made a low, to change a channel toward reverse.
This signal uses to produce a host interrupt.
1284 active signal. "HIGH" in ECP mode
Always "HIGH". Pulled up to +5 V via 3.9 K ohm resistor.
Always "HIGH". Pulled up to +5 V via 1.0 K ohm resistor.
Chassis GND.
Signal GND.
Not connected.
Revision B
34