Deskstar 7K500 and Deskstar E7K500 Hard Disk Drive Specification
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6.6.2 Read DRQ interval time
For read sectors and read multiple operations the interval from the end of negation of the DRQ bit until setting of
the next DRQ bit is as follows:
• In the event that a host reads the status register only before the sector or block transfer DRQ interval, the
DRQ interval 4.2 µs
• In the event that a host reads the status register after or both before and after the sector or block transfer, the
DRQ interval is 11.5 µs
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