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WM8593 Datasheet(PDF) 20 Page - Wolfson Microelectronics plc |
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WM8593 Datasheet(HTML) 20 Page - Wolfson Microelectronics plc |
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20 / 98 page ![]() WM8593 Product Preview w PP Rev 1.0 January 2007 20 3-WIRE (SPI COMPATIBLE) SERIAL CONTROL INTERFACE MODE REGISTER WRITE SDIN is used for the program data, SCLK is used to clock in the program data and /CS is use to latch in the program data. SDIN is sampled on the rising edge of SCLK. The 3-wire interface write protocol is shown in Figure 10. Figure 10 3-Wire Serial Interface Write Protocol • W indicates write operation. • A[6:0] is the register index. • B[15:0] is the data to be written to the register indexed. • /CS is edge sensitive – the data is latched on the rising edge of /CS. REGISTER READ-BACK The read-only status registers can be read back via the SDOUT pin. Read Back is enabled when the R/W bit is high. The data can then be read by writing to the appropriate register address, to which the device will respond with data. Figure 11 3-Wire Serial Interface Readback Protocol REGISTER RESET Any write to register R0 (00h) will reset the WM8593. All register bits are reset to their default values. |
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