Epson service manual Nibble Mode, MDL Stylus Pro 7600-DYE/Stylus Pro 9600-DYE

EPSON Stylus Pro 7600/9600 Revision A

1.6.1.2 Nibble Mode

SPECIFICATION

†Transmission mode: 8 bit parallel

† Synchronization:	By STROBE pulse
† Handshaking:	By BUSY and ACKNLG signal
† Signal level:	TTL compatible (IEEE1284Level 1 device)
† Data trans. timing:	Refer to the IEEE-1284 specification

†Extensibility Request:

The printer responds affirmatively when the extensibility request values are 00H or 04H, that mean,

„00H Request Nibble Mode Reverse Channel Transfer.

„04H Request Device ID; Return Data Using Nibble 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><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 1-55. Connector Pin Assignment and Signals (Nibble)

Pin	Return	Signal Name	In/Out *	Function
No.	GND Pin
1	19	HostClk	In	Host clock signal.
2	20	DATA0	In
3	21	DATA1	In
4	22	DATA2	In	The DATA0 through DATA7 signals
5	23	DATA3	In	represent data bits 0 to 7, respectively. Each
				signal is at high level when data is logical 1
6	24	DATA4	In
7	25	DATA5	In	and low level when data is logical 0.
8	26	DATA6	In
9	27	DATA7	In
10	28	PtrClk	Out	Printer clock signal.
11	29	PtrBusy	Out	Printer busy signal and reverse channel
		/DataBit-3,7		transfer data bit 3 or 7.
12	28	AckDataReq	Out	Acknowledge data request signal and reverse
		/DataBit-2,6		channel transfer data bit 2 or 6.
13	28	Xflag	Out	X-flag signal and reverse channel transfer
		/DataBit-1,5		data bit 1 or 5.
14	30	HostBusy	In	Host busy signal.
31	30	-INIT	In	Not used.
32	29	-DataAvail	Out	Data available signal and reverse channel
		/DataBit-0,4		transfer data bit 0 or 4.
36	30	1284-Active	In	1284 active signal.
18	--	Logic H	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 used

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

Product Description Interfaces 93