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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 KΩ resistor.
35 +5V O
This line is pulled up to +5V through 1.0 KΩ 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