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MC145202EVK Fiches technique(PDF) 7 Page - Motorola, Inc |
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MC145202EVK Fiches technique(HTML) 7 Page - Motorola, Inc |
7 / 48 page MC145192EVK • MC145202EVK 7 MOTOROLA In Figure 2, DIP switch sections 6, 7, and 8 allow the computer to read Out A, Out B or Lock Detect from the PLL device. Each of the inputs can only be read on one board at a time, but each item could be read on a different board. In a three–board cascade, Out A could be read from the first board, Out B from the second, and Lock Detect from the third. There is no way to determine in software the board address of a particular input. The control program does not make use of these inputs. Pin assignment on the printer port connector is: Label Pin Number Out A 12 Out B 13 Lock Detect 15 PRINTER PORT CONFIGURATION Printer port outputs on an IBM PC or clone use TTL–LS logic levels. Inputs are one TTL–LS load. Signal lines can be used for any purpose. The standard names, direction of data flow, true and inverted data are shown in Figure 3. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 – 25 Printer IBM Printer Port Pin Number – Strobe + Data Bit 0 + Data Bit 1 + Data Bit 3 + Data Bit 4 + Data Bit 2 + Data Bit 5 + Data Bit 6 + Data Bit 7 – Acknowledge + Busy + P. End (out of paper) + Select – Auto Feed – Error – Initialize Printer – Select Input Ground Signal Name Figure 3. Printer Port Data Lines |
Numéro de pièce similaire - MC145202EVK |
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