Parallel Interface (Reverse Channel); Table1-11. Pin Assignment For Reverse Channel - Epson CBB Service Manual

Epson Stylus Color 200 /Epson Stylus 200

1.3.2 Parallel Interface (Reverse channel)

Transmission mode
Adapatable connector
Snynchronization
Handshaking
Signal level
Data transmission timing
Extensibility request
Device ID

Table1-11. Pin Assignment for Reverse channel

Pin No. Signal Name
1 HostClk
2-9 DATA 1-8
10 PtrClk
PtrBusy /
11
DataBit-3,7
AckDataReq /
12
DataBit-2,6
Xflag /
13
DataBit-1,5
14 HostBusy
31 -INIT
-Data Avail /
32
DataBit-0,4
36 1284-Active
18 Logic-H
35 +5V
17 Chassis
16,33
GND
19-30
15,34 NC
* In/Out refers to the direction of signal flow from the printer's point of view.
Rev. A
IEEE-1284 nibble mode
57-30360 (Amphenol) or equivalent
Refer to the IEEE-1284 specification
Refer to the IEEE-1284 specification
TTL-compatible (IEEE-1284 level 1 device)
Refer to the IEEE-1284 specificatin
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
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
I/O*
I Host clock signal
Parallel Input data to the printer.
I
O Printer clock signal.
O Printer busy signal and reverse channel transfer data bit 3or7.
Acknowledge data request signal and reverse channel
O
transfer data bit 2 or 6.
O X-flag signal and reverse channel transfer data bit 1 or 5.
I Host busy signal
I Not used
Data available signal and reverse channel transfer data bit 0
O
or 4.
I 1284 active signal.
O
This line is pulled up to +5 V through 3.9 K
O
This line is pulled up to +5V through 1.0 K
—- Chassis GND.
— Signal ground.
—- Not connected.
Product Description
Description
bit 0:LSB
bit 7:MSB
resistor.
resistor.
1-11