
Interface
5.6 Timing
5.6.1 PIO data transfer
Figure 5.9 shows of the data transfer timing between the device and the host system.
t0
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Write data |
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| t3 | t4 |
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Read data |
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IORDY | t10 |
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Symbol | Timing parameter |
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t0 | Cycle time |
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| 120 | — |
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t1 | Data register selection setup time for |
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t2 | Pulse width of |
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t2i | Recovery time of |
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t3 | Data setup time for DIOW- |
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| 20 | — |
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t4 | Data hold time for DIOW- |
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t5 | Time from DIOR- assertion to read data available |
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| — | 50 |
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t6 | Data hold time for DIOR- |
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| 5 | — |
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t9 | Data register selection hold time for |
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t10 | Time from | — | 35 |
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t11 | Time from validity of read data to IORDY "high" level | 0 | — |
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t12 | Pulse width of IORDY |
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| — | 1,250 |
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| Figure 5.9 | PIO data transfer timing |
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