1.3.2 Parallel Interface (Reverse channel)
Transmission mode IEEE-1284nibbl e mode
Adapatable connector 57-30360 (Amphenol) or equivalent
Snynchronization Referto the IEEE-1284 specification
Handshaking Refer to theIEEE-1284 specification
Signalleve l TTL-compatible(IEEE-1284 level 1 device)
Data transmission timing Refer to the IEEE-1284specificatin
Extensibilityrequest Theprinte r responds to theextensibility request in the affirmative,
when therequest is 00Hor 04H, which mean;
00H: Request nibblemode of reversechan neltransfer
04H: Request device ID innibble mode of reverse channel transfer
Device ID Standardcolor version
[00H] [3BH].....MFG:EPSON, CMD: ESCPL2-00
MDL: Stylus[SP] COLOR[SP]200, CLS: Printer
Standardmonoc hrome 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 databit 3or7.
12 AckDataReq /
DataBit-2,6 OAcknowledge data requestsignal and reverse channel
transfer data bit 2 or 6.
13 Xflag /
DataBit-1,5 O X-flag signal and reverse channel transfer databit 1 or 5.
14 HostBusy I Host busy signal
31 -INIT I Not used
32 -Data Avail /
DataBit-0,4 OData available signaland 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 Kresistor.
35 +5V O This line is pulled up to +5V through 1.0 Kresistor.
17 Chassis —- Chassis GND.
16,33
19-30 GND Signal ground.
15,34 NC —- Not connected.
* In/Outrefers to the direction of signal flow fromthe printer’s point of view.
Epson Stylus Color200 /Epson Stylus 200 Product Description
Rev. A 1-11