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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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WM8581 数据表(PDF) 21 Page - Wolfson Microelectronics plc |
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WM8581 数据表(HTML) 21 Page - Wolfson Microelectronics plc |
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21 / 94 page  Product Preview WM8581 w PP Rev 1.0 March 2006 21 REGISTER READBACK The WM8581 allows readback of certain registers in 2-wire mode. As in 3-wire mode, there are two methods of reading back data: continuous and non-continuous readback. Continuous readback is set by writing to the Readback Control register (see Table 9) to set READEN and CONTREAD to 1, and to set the READMUX bits to select the register to be read back. The status of this register can then be readback using the protocol shown in Figure 10. Figure 10 2-Wire Continuous Readback If CONTREAD is set to zero, the user can read back directly from the register by writing to the register address, to which the device will respond with data. The protocol for this system is shown in Figure 11. Figure 11 2-Wire Non-Continuous Readback |
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