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FDC37C669 Datasheet(PDF) 32 Page - SMSC Corporation |
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FDC37C669 Datasheet(HTML) 32 Page - SMSC Corporation |
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32 / 164 page ![]() 32 Model 30 Mode BITS 0 - 1 DATA RATE SELECT These bits control the data rate of the floppy controller. See Table 13 for the settings corresponding to the individual data rates. The data rate select bits are unaffected by a software reset, and are set to 250kb/s after a hardware reset. BIT 2 NOPREC This bit reflects the value of NOPREC bit set in the CCR register. BIT 3 DMAEN This bit reflects the value of DMAEN bit set in the DOR register bit 3. BITS 4 - 6 UNDEFINED Always read as a logic "0" BIT 7 DSKCHG This bit monitors the pin of the same name and reflects the opposite value seen on the pin. 7 6 5 4 3 2 1 0 DSK CHG 0 0 0 DMAEN NOPREC DRATE SEL1 DRATE SEL0 RESET COND. N/A 0 0 0 0 0 1 0 |
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