EPSON FX-890/2190
Revision B
PRODUCT DESCRIPTIONS
Interface
26
Note : In/Out refers to the direction of signal flow from the printer’s point of view.
1.2.3 USB Interface
Specifications
Standard:
Based on
“Universal Serial Bus Specifications
Revision 1.1”
“Universal Serial Bus Device Class
Definition for Printing Devices Version 1.1”
Bit rate :
12 Mbps (Full Speed Device)
Data encording :
NRZI
Adaptable connector :
USB Series B
Recommended cable length : 2 meters
Connector pin assignment and signals :
Figure 1-8. USB Interface connector pin assignment
Table 1-27. Connector pin assignment (Reverse channel)
Pin No. Signal Name
Return
GND
Pin
IN/
Out*
Function description
1
HostClk
19
In
Host clock signal.
2
DATA1
20
In
Parallel input data to the printer.
bit 0: LSB
3
DATA2
21
In
bit 1
4
DATA3
22
In
bit 2
5
DATA4
23
In
bit 3
6
DATA5
24
In
bit 4
7
DATA6
25
In
bit 5
8
DATA7
26
In
bit 6
9
DATA8
27
In
bit 7: MSB
10
PtrClk
28
Out
Printer clock signal.
11
PtrBusy /
DataBit-3,7
29
Out
Printer busy signal and reverse channel transfer
data bit 3 or 7.
12
AckDataReq /
DataBit-2,6
28
Out
Acknowledge data request signal and reverse
channel transfer data bit 2 or 6.
13
Xflag /
DataBit-1,5
28
Out
X-flag signal and reverse channel
transfer data bit 1 or 5.
14
HostBusy
30
In
Host Busy signal.
31
-INIT
30
In
Not used.
32
-DataAvail /
DataBit-0,4
29
Out
Data Available signal and reverse channel transfer
data bit 0 or 4.
36
1284-Active
30
In
1284 active signal.
18
Logic-H
-
Out
This line is pulled up to +5 V through 3.9 k
Ω
resistor.
35
+5 V
-
Out
This line is pulled up to +5 V through 1.0 k
Ω
resistor.
17
Chassis
-
-
Chassis GND.
16, 33
19-30
GND
-
-
Signal GND.
15, 34
NC
-
-
Not connected.
Table 1-28. Connector pin assignment
Pin No. Signal name
In/Out
Function description
1
VCC
-
Cable power. Maximum power consumption is
100mA
2
-Data
Bi-directional Data
3
+Data
Bi-directional Data, pull up to +3.3V via 1.5K
Ω
resistor
4
Ground
-
Cable ground
Pin #2
Pin #4
Pin #3
Pin #1
Содержание 890N - FX B/W Dot-matrix Printer
Страница 1: ...EPSONFX 890 2190 Serial Impact Dot Matrix Printer SEDM02003 SERVICE MANUAL ...
Страница 8: ...C H A P T E R 1 PRODUCTDESCRIPTIONS ...
Страница 43: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 52: ...C H A P T E R 3 TROUBLESHOOTING ...
Страница 65: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Страница 93: ...C H A P T E R 5 ADJUSTMENT ...
Страница 98: ...C H A P T E R 6 MAINTENANCE ...
Страница 104: ...C H A P T E R 7 APPENDIX ...
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Страница 116: ...FOR FX 890 NO 2 R ev 01 C524 E LE C 01 A A B J C B C H E F I K L M G D D 300 450 372 200 400 350 ...
Страница 118: ...FOR FX 890 NO 4 R ev 01 C524_PACK_01 03 01 06 04 04 xx 07 02 02 02 05 05 ...
Страница 120: ...FOR FX 2190 NO 2 Rev 01 C526_ELEC_01 A A B G D E J F F K L B I F H 200 400 373 330 372 450 ...