Canon BJC 50 Service Manual - Page 49
Canon BJC 50 - Color Inkjet Printer Manual
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BJC-50 9) Timing 1.0µs 1.0µs 1.0µs min min min Part 2: Product Specifications DATA 1-8 STROBE BUSY ACKNLG 3.5µ s min. Figure 2-12 Timing Chart (Compatibility Mode) 1284 Active (SELECT IN) AckDataReq (PE) Data (1 - 8) HostBusy (AUTO FEED XT) HostClk (STROBE) PtrClk (ACKNLG) PtrBusy (BUSY) nDataAvail (ERROR) XFlag (SELECT) H H P P P P TP TP TP Printer status is busy Data bit 3 Data bit 0 Nibble mode supporting Data bit 1 Data bit 7 Data bit 4 Data bit 5 H P 0000 0000 Data bit 2 Data bit 6 Not transferable TP TP TP TP TP: minimum setup time Figure 2-13 Timing Chart (Nibble Mode) 1284 Active (SELECT IN) nAckReverse (PE) Data (1 - 8) HostAck (AUTO FEED XT) HostClk (STROBE) PeriphClk (ACKNLG) PeriphAck (BUSY) nPeriphRequest (ERROR) XFlag (SELECT) nReverseRequest (INIT) H P H P P P P P P H TP TP TP TP TP TP TP: minimum setup time nPeriphRequest ECP Mode Supported Busy Error Select 0001 0000 Byte0 nCmd Byte1 nCmd Perror Figure 2-14 Timing Chart (ECP Mode) 2-19