Epson 9600, 7600 service manual ECP Mode, Connector Pin Assignment and Signals ECP

EPSON Stylus Pro 7600/9600 Revision A

1.6.1.3 ECP Mode

SPECIFICATION

†Transmission mode: IEEE-1284ECP mode

†Synchronization: IEEE-1284 specification

† Handshaking:	IEEE-1284 specification
† Signal level:	TTL compatible (IEEE1284Level 1 device)
† Data trans. timing:	IEEE-1284 specification

†Extensibility Request:

The printer responds affirmatively when the extensibility request values are 10H or 04H, that mean,

„10H Request ECP Mode Reverse Channel Transfer.

„14H Request Device ID; Return Data Using ECP Mode Rev Channel Transfer.

†Device ID:

„When IEEE1284.4 is valid

•<xx><xx>

(Character strings, depending on <Model Name>)

•MFG: EPSON;

•CMD: ESCPL2,BDC,D4;

•MDL: <Stylus Pro 7600-DYE/Stylus Pro 9600-DYE> ;

•CLS: PRINTER;

•DES: EPSON<SP>T<Stylus Pro 7600-DYE/Stylus Pro 9600-DYE>;(<SP>: space)

„When IEEE1284.4 is not valid

•<xx><xx>

(Character strings, depending on <Model Name>)

•MFG: EPSON;

•CMD: ESCPL2,BDC;

•MDL: <Stylus Pro 7600-DYE/Stylus Pro 9600-DYE>;

•CLS: PRINTER;

•DES: EPSON<SP>T<Stylus Pro 7600-DYE/Stylus Pro 9600-DYE>; (<SP>: space)

CONNECTOR PIN ASSIGNMENT AND SIGNALS

Table 1-56. Connector Pin Assignment and Signals (ECP)

Pin	Return	Signal Name	In/Out*	Function
No.	GND Pin
1	19	HostClk	In	Data or address information are transferred from a host to a
				printer.
2	20	DATA0	In
3	21	DATA1	In
4	22	DATA2	In	The DATA0 through DATA7 signals represent data bits 0
5	23	DATA3	In
				to 7, respectively. Each signal is at high level when data is
6	24	DATA4	In
				logical 1 and low level when data is logical 0.
7	25	DATA5	In
8	26	DATA6	In
9	27	DATA7	In
10	28	PeriphClk	Out	Data is transferred from a printer to a host.
				A printer uses this signal for a flow control of forward
				direction. Also this signal offers the data bit 9 that use it to
11	29	PeriphAck	Out	judge whether or not it is information command
				information or data to be output on the data signal of
				reverse direction.
12	28	nAckReverse	Out	A printer does drive to Low and approve nReverseRequest.
13	28	Xflag	Out	X-flag signal and reverse channel transfer data bit 1 or 5.
				A host uses this signal for a flow control of reverse
				direction. Also this signal offers the data bit 9 that use it to
14	30	HostAck	In	judge whether or not it is information command
				information or data to be output on the data signal of
				forward direction.
31	30	nReverseRequest	In	This signal is made a low, to change a channel toward
				reverse.
32	29	nPeriphReques	Out	This signal uses to produce a host interrupt.
36	30	1284-Active	In	1284 active signal. “HIGH” in ECP mode
18	--	PeriphLogic	Out	Always “HIGH”. Pulled up to +5 V via 3.9 K ohm resistor.
35	--	+5V	Out	Always “HIGH”. Pulled up to +5 V via 1.0 K ohm resistor.
17	--	Chassis GND	--	Chassis GND.
16,33	--	GND	--	Signal GND.
19-30
15,34	--	NC	--	Not connected.

Note "*": In/Out refers to the direction of signal flow from the printer's point of view.

Product Description Interfaces 94