1.3.2 Parallel Interface (Reverse channel)
Transmission mode
IEEE-1284 nibble mode
Adapatable connector
57-30360 (Amphenol) or equivalent
Snynchronization
Refer to the IEEE-1284 specification
Handshaking
Refer to the IEEE-1284 specification
Signal level
TTL-compatible (IEEE-1284 level 1 device)
Data transmission timing
Refer to the IEEE-1284 specificatin
Extensibility request
The printer responds to the extensibility request in the affirmative,
when the request is 00Hor 04H, which mean;
00H: Request nibble mode of reverse channel transfer
04H: Request device ID in nibble mode of reverse channel transfer
Device ID
Standardcolor version
[00H] [3BH].....MFG: EPSON, CMD: ESCPL2-00
MDL: Stylus[SP] COLOR[SP]200, CLS: Printer
Standard monochrome version
[00H] [35H]......MFG:EPSON, CMD: ESCPL2-00
MDL:Stylus [SP}200, CLS: Printer
Table1-11. Pin Assignment for Reverse channel
Pin No.
Signal Name
I/O*
Description
1
HostClk
I
Host clock signal
2-9
DATA 1-8
I
Parallel Input data to the printer.
bit 0:LSB
bit 7:MSB
10
PtrClk
O
Printer clock signal.
11
PtrBusy /
DataBit-3,7
O
Printer busy signal and reverse channel transfer data bit 3or7.
12
AckDataReq /
DataBit-2,6
O
Acknowledge data request signal and reverse channel
transfer data bit 2 or 6.
13
Xflag /
DataBit-1,5
O
X-flag signal and reverse channel transfer data bit 1 or 5.
14
HostBusy
I
Host busy signal
31
-INIT
I
Not used
32
-Data Avail /
DataBit-0,4
O
Data available signal and reverse channel transfer data bit 0
or 4.
36
1284-Active
I
1284 active signal.
18
Logic-H
O
This line is pulled up to +5 V through 3.9 K
Ω
resistor.
35
+5V
O
This line is pulled up to +5V through 1.0 K
Ω
resistor.
17
Chassis
—-
Chassis GND.
16,33
19-30
GND
—
Signal ground.
15,34
NC
—-
Not connected.
* In/Out refers to the direction of signal flow from the printer’s point of view.
Epson Stylus Color 200 /Epson Stylus 200
Product Description
Rev. A
1-11
