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PC8477BV-1 Datasheet(PDF) 17 Page - National Semiconductor (TI) |
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PC8477BV-1 Datasheet(HTML) 17 Page - National Semiconductor (TI) |
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17 / 54 page  40 Command Set Description (Continued) SCAN EQUAL Command Phase MT MFM SK 1 0 0 0 1 IPS 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 Sector Step Size Execution Phase Data transferred from system to controller is compared to data read from disk Result Phase Status Register 0 Status Register 1 Status Register 2 Track Number Head Number Sector Number Bytes per Sector SCAN HIGH OR EQUAL Command Phase MT MFM SK 1 1 1 0 1 IPS 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 Sector Step Size Execution Phase Data transferred from system to controller is compared to data read from disk Result Phase Status Register 0 Status Register 1 Status Register 2 Track Number Head Number Sector Number Bytes per Sector SCAN LOW OR EQUAL Command Phase MT MFM SK 1 1 0 0 1 IPS 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 Sector Step Size Execution Phase Data transferred from system to controller is compared to data read from disk Result Phase Status Register 0 Status Register 1 Status Register 2 Track Number Head Number Sector Number Bytes per Sector SEEK Command Phase 00 0 0 1 1 1 1 X X X X X HD DR1 DR0 New Track Number MSN of Track Number 0 0 0 0 Note Last Command Phase byte is required only if ETR is set in Mode Command Execution Phase Disk drive head is stepped in or out to a programmable track No Result Phase SENSE DRIVE STATUS Command Phase 00000 1 0 0 XXXXXHDDR1 DR0 Execution Phase Disk drive status information is detected and reported Result Phase Status Register 3 SENSE INTERRUPT Command Phase 00001000 Execution Phase Status of interrupt is reported Result Phase Status Register 0 Present Track Number (PTR) MSN of PTR 0000 Note Third Result Phase byte can only be read if ETR is set in the Mode Command 17 |
Similar Part No. - PC8477BV-1 |
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Similar Description - PC8477BV-1 |
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