Epson DFX-9000 - Page 35

Epson DFX-9000 Revision B
Product Description Basic specifications 28
* In/Out refers to the direction of signal flow from the printer side.
5 DATA4 23 In bit 3
6 DATA5 24 In bit 4
7 DATA6 25 In bit 5
8 DATA7 26 In bit 6
9 DATA8 27 In bit 7: MSB
10 PtrClk 28 Out Printer clock signal
11 PtrBusy / DataBit-3, 7 29 Out Printer busy signal and reverse channel transfer data bit 3 or 7.
12 AckDataReq / DataBit-2, 6 28 Out Acknowledge data request signal and reverse channel transfer data
bit 2 or 6.
13 Xflag / DataBit-1, 5 28 Out X-flag signal and reverse channel transfer data bit 1 or 5.
14 HostBusy 30 In Host busy signal
31 -INIT 30 In Not used.
32 -DataAvail / DataBit-0, 4 29 Out Data available signal and reverse channel transfer data bit 0 or 4.
36 1284-Active 30 In 1284 active signal
18 Logic-H - Out This line is pulled up to +5 V through a 3.9 kΩ resistor.
35 +5 V - Out This line is pulled up to +5 V through a 1.0 kΩ resistor.
17 Chassis - - Chassis GND
16, 33
19-30
GND - - Signal GND
15, 34 NC - - Not connected.
Table 1-21. Connector pin assignment, reverse channel (continued)
Pin No. Signal name
Return GND
Pin
In/Out* Function description