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PC8477BV-1 Datasheet(PDF) 18 Page - National Semiconductor (TI) |
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PC8477BV-1 Datasheet(HTML) 18 Page - National Semiconductor (TI) |
18 / 54 page 40 Command Set Description (Continued) SET TRACK Command Phase 0WNR100 0 0 1 0 0 1 1 0 MSB DR1 DR0 New Track Number (PTR) Execution Phase Internal register is read or written Result Phase Value SPECIFY Command Phase 0000001 1 Step Rate Time Motor Off Time Motor On Time DMA Execution Phase Internal registers are written No Result Phase VERIFY Command Phase MT MFM SK 1 0 1 1 0 EC X X X X HD DR1 DR0 Track Number Drive Head Number Sector Number Bytes per Sector End of Track Sector Number Intersector Gap Length Data LengthSector Count Execution Phase Data is read from disk but not transferred to the system Result Phase Status Register 0 Status Register 1 Status Register 2 Track Number Head Number Sector Number Bytes per Sector VERSION Command Phase 00010000 Result Phase 10010000 WRITE DATA Command Phase MT MFM 0 0 0 1 0 1 IPS X XXXHDDR1 DR0 Track Number Drive Head Number Sector Number Bytes per Sector End of Track Sector Number Intersector Gap Length Data Length Execution Phase Data is transferred from the system to the controller via DMA or Non-DMA modes and written to the disk Result Phase Status Register 0 Status Register 1 Status Register 2 Track Number Head Number Sector Number Bytes per Sector WRITE DELETED DATA Command Phase MT MFM 0 0 1 0 0 1 IPS X XXXHDDR1 DR0 Track Number Drive Head Number Sector Number Bytes per Sector End of Track Sector Number Intersector Gap Length Data Length Execution Phase Data is transferred from the system to the controller via DMA or Non-DMA modes and written to the disk Result Phase Status Register 0 Status Register 1 Status Register 2 Track Number Head Number Sector Number Bytes per Sector 18 |
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