Canon Color Bubble Jet BJC-1000 Series, Руководство по обслуживанию

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SELECT [Output]
The printer is selected when this signal is High. The printer is deselected when this
signal is Low. This signal goes Low when the printer is offline or when an error
occurs (paper-out, paper jam, head error, etc.).
AUTO FEED XT [Input]
Not used.
INIT [Input]
INIT from the system resets the printer to its initial power-on state. In BJ mode, the
BUSY signal goes High, and any received data is printed. In LQ mode, the BUSY
signal goes High, and the print buffer is cleared. When INIT signal goes Low, it
resets the printer to the power-on default state.
FAULT [Output]
This signal goes Low when the printer is in an error state (paper-out, paper jam, etc.).
SELECT IN [Input]
Not used.
Nibble Mode
Host Clk [Input]
The STROBE signal is to read DATA 1 to DATA 8.
Negotiation phase:
Trigger signal to send the protocol confirmation to the printer.
DATA 1-8 [Input]
The printer receives data with the Host Clk signal.
The state of each bit of this signal must be maintained for at least 0.5 µs from the
rising edge of the Host Clk signal.
Ptr Clk [Output]
Reverse data transmission phase:
The printer requests the host computer to read the data by making the Ptr Clk
signal Low. After finishing reading, the host computer notifies peripheral equipment
of completion of data receiving by making the Host Busy signal High.
Ptr Busy [Output]
Reverse data transmission phase:
Indicates bit 3 and bit 7 of the transmission data.
Ack Data Req [Output]
• Reverse data transmission phase:
Indicates bit 2 and bit 6 of the transmission data.
• Negotiation phase:
Trigger signal to inform the host computer of the printer’s is condition (Whether it
supports nibble mode or not, whether there is reverse transmission data or not).
Xflag [Output]
• Reverse data transmission phase:
Indicates bit 1 and bit 5 of the transmission data.
• Negotiation phase:
Informs the host computer whether printer supports nibble mode or not,
synchronizing with the falling edge of the Ack data Req signal. “Low” means that it
supports nibble mode.
Part 2: Product Specifications BJC-1000
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