EPSON Stylus Pro 9000 Revision B
Product Description Interfaces 31
TYPE-B OPTIONAL INTERFACE
The EPSON Stylus Pro 9000 supports a Type-B interface (level 2).
Reply message (short version):
n When using Co-ax/Twin-ax interface card:
Main type: MTP48p, PW127cl10cpi, PRG (KAxxxx)rev,
AP1200ma
Product name: Stylus[SP]Pro[SP]9000
Emulation type: ESCPL2-00
Entity type: EPSONLQ2
n When not using a different (not Co-ax/Twin-ax) interface card:
Main type: MTP48p, PW127cl10cpi, PRG (KAxxx)rev,
AP1200ma, SPD0fast
Product name: Stylus[SP]Pro[SP]9000
Emulation type: ESCPL2-00
Entity type: ESPONLQ2
BUFFER OPERATION
When there is no space left in the buffer (4Kb or less), the EPSON Stylus Pro
9000 sends the host a BUSY signal. If the host receives this signal for a long
time, it times out and stops sending data.
Table 1-31. Connector Pin Assignments - Reverse Channel
Pin
No.
Signal Name
Return
Pin
In/
Out
Functional Description
1 HostClk 19 I Host clock signal.
2-9 Data0-7 20-27 I
The DATA0 through DATA7 signals
represent data bits 0 to7, respectively. Each
signal is at high level when data is logical 1
and low level when data is logical 0. These
signals are used to transfer the 1284
extensibility request values to the printer.
10 PeriphClk 28 O Printer clock signal
11
PeriphAck/
PtrBusy
29 O
Printer busy signal and reverse channel
transfer data bit 3 or 7.
12 AckData Req 28 O
Acknowledge data request signal and
reverse channel transfer data bit 2 or 6.
13 Xflag 28 O
X-flag signal and reverse channel transfer
data bit 1 or 5.
14 HostBusy 30 I Host busy signal.
15 NC Not connected
16 GND Signal ground
17 Chassis GND Chassis ground
18 Logic-H O Pulled up to +5V via 3.9K ohm resister.
19-30 GND Ground for twisted pair return
31 /INIT 30 I Not used.
32 /DataAvail 29 O
Data available signal and reverse channel
transfer data bit 0 or 4.
33 GND Ground for twisted pair return
34 NC Not connected
35 +5V ---- O Pulled up to +5V via 3.3K ohm resister.
36 1284-Active 30 I 1284 Active Signal
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