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LM4560 bảng dữ liệu(PDF) 51 Page - National Semiconductor (TI) |
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LM4560 bảng dữ liệu(HTML) 51 Page - National Semiconductor (TI) |
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51 / 54 page ![]() 4.0 Functional Description (Continued) Present State Next State State Change Way D0 D1 HIFW D2 or D1 D0 HIFW Present State Next State State Change Way D0 D2 HIFW D2 D3 HIFW or Inactivity Timer expires D0 D3 HIFW 5.1.2 Timing The timing descriptions of host interface signals. All signal’s transition edges are respected to the rising edge of PCICLK. The setup time and hold time requirements are illustrated in Figure 4. 5.1.2.1 Slave Read/Write Timing Slave read/write means that host performs I/O read/write operation to audio block while audio block acts as a bus slave. Data transition occurs at the rising edge of PCICLK while both chip select signal and DATARDY are active. They are two-clock wait states from chip select signal and DATARDY. Timing diagram are printed into file: sl_io_rd.ps and sl_io_wr.ps . 5.1.2.2 Master Read/Write There’s one clock wait state of IRDY which means: 1) IRDY can be asserted in 2 clocks after FRAME is asserted; 2) IRDY has to be de-asserted for 1 clock after each of data transferring. Timing diagram are printed into file: ma_mem_rd1.ps, ma_memrd2.ps, ma_mem_rd3.ps, ma_mem_wr2.ps and ma_mem_wr3.ps. DS100910-5 FIGURE 4. Setup Time and Hold Time of All Signals www.national.com 51 |
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