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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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WM8581 датащи(PDF) 22 Page - Wolfson Microelectronics plc |
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WM8581 датащи(HTML) 22 Page - Wolfson Microelectronics plc |
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22 / 100 page  WM8581 Production Data w PD Rev 4.0 April 2007 22 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION 2:0 READMUX [2:0] 000 Determines which status register is to be read back: 000 = Error Register 001 = Channel Status Register 1 010 = Channel Status Register 2 011 = Channel Status Register 3 100 = Channel Status Register 4 101 = Channel Status Register 5 110 = S/PDIF Status Register 3 CONTREAD 0 Continuous Read Enable. 0 = Continuous read-back mode disabled 1 = Continuous read-back mode enabled R52 READBACK 34h 4 READEN 0 Read-back mode enable. 0 = read-back mode disabled 1 = read-back mode enabled Table 9 Read-back Control Register The 3-wire interface readback protocol is shown below. Note that the SDO pin is tri-state unless CSB is held low; therefore CSB must be held low for the duration of the read. Figure 7 3-Wire SPI Compatible Interface 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 8 below. Figure 8 3-Wire SPI Compatible Control Interface Non-Continuous Readback |
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