Part 2: Product Specifications
BJC-1000
2-10
*1: All-RETs are connected to GND.
8) Input/ output signals:
Compatible Mode
STROBE [Input]
This signal is used to read DATA1 to DATA8. The signal becomes valid after BUSY
signal goes Low and the printer outputs an ACKNLG signal. The host computer
does not send the next signal until it receives ACKNLG signal. It is normally High;
after it goes Low, the printer receives data. When the signal remains Low, the
printer does not operate until it goes High.
DATA1 to 8 [Input]
The printer receives data with the STROBE signal. The state of each bit of the
signal must be maintained for at least 0.5 µs from the rising edge of the STROBE
signal.
ACKNLG [Output]
This signal is a response signal to the STROBE signal. The host computer does not
send the next STROBE signal until this signal is sent. When the power is turned on
or the BUSY signal goes Low for the input of the INIT signal, this signal is sent
regardless of the STROBE signal.
BUSY [Output]
When this signal is High, the printer is BUSY; when Low, the printer is READY. The
signal goes High when data is received, when the printer is offline, or when an error
occurs (paper-out, paper jam).
P.E. [Output]
When the printer cannot feed paper, this signal goes High. Then BUSY signal goes
High and the SELECT and FAULT signals go Low. The signal goes Low when the
paper is set and the printer goes online. FAULT and SELECT signals then go High
from Low. If paper is not ejected (paper jam) by executing paper eject command,
this signal and BUSY signal go High, and SELECT and FAULT go Low. In this case,
the signals do not change even if the paper is ejected.
Nibble mode
No.
Signal
I/O
No.
Signal
I/O
1
HostClk
IN
19
Signal Gnd
...
2
DATA1
IN/OUT
20
Signal Gnd
...
3
DATA2
IN/OUT
21
Signal Gnd
...
4
DATA3
IN/OUT
22
Signal Gnd
...
5
DATA4
IN/OUT
23
Signal Gnd
...
6
DATA5
IN/OUT
24
Signal Gnd
...
7
DATA6
IN/OUT
25
Signal Gnd
...
8
DATA7
IN/OUT
26
Signal Gnd
...
9
DATA8
IN/OUT
27
Signal Gnd
...
10
Ptr Clk
OUT
28
Signal Gnd
...
11
Ptr Busy
OUT
29
Signal Gnd
...
12
Ack Data Req
OUT
30
Signal Gnd
...
13
Xflag
OUT
31
INIT
IN
14
Host Busy
IN
32
DataAvail
OUT
15
Not Defined
...
33
Not Defined
...
16
INIT -RET
*1
...
34
Not Defined
...
17
F.G.
...
35
Not Defined
...
18
Vcc
...
36
1284 Active
IN
Содержание Color Bubble Jet BJC-1000 Series
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Страница 115: ...Part 5 Maintenance BJC 1000 5 25 6 CIRCUIT DIAGRAMS 6 1 Parts Layout 6 1 1 Logic board Figure 5 6 Logic Board Top View ...
Страница 116: ...Part 5 Maintenance BJC 1000 5 26 Figure 5 7 Logic Board Bottom View ...
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Страница 126: ...The printing paper contains 70 waste paper PRINTED IN JAPAN IMPRIME AU JAPON CANON INC ...
