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FDC37C78-HT Datasheet(PDF) 61 Page - Microchip Technology |
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FDC37C78-HT Datasheet(HTML) 61 Page - Microchip Technology |
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61 / 82 page  61 FDD Interface Pins All pins in the FDD interface which can be connected directly to the floppy disk drive itself are either DISABLED or TRISTATED. Pins used for local logic control or part programming are unaffected. Table 32 depicts the state of the floppy disk drive interface pins in the powerdown state. Table 32 - State of Floppy Disk Drive Interface Pins in Powerdown FDD Pins State in Auto Powerdown Input Pins RDATA Input WP Input TRK0 Input INDX Input DRV2 Input DSKCHG Input Output Pins MOTEN[0:3] Tristated DS[0:3] Tristated DIR Active STEP Active WRDATA Tristated WE Tristated HDSEL Active DENSEL Active DRATE[0:1] Active |
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