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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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WM8985GEFL/R датащи(PDF) 85 Page - Wolfson Microelectronics plc |
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WM8985GEFL/R датащи(HTML) 85 Page - Wolfson Microelectronics plc |
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85 / 118 page  Pre-Production WM8985 w PP, Rev 3.4, October 2006 85 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION 5:4 JD_SEL 00 Pin selected as jack detection input 00 = GPIO1 01 = GPIO2 10 = GPIO3 11 = Reserved R9 (09h) GPIO control 6 JD_EN 0 Jack Detection Enable 0 = disabled 1 = enabled 3:0 JD_EN0 0000 Output enables when selected jack detection input is logic 0. [0]= OUT1_EN_0 [1]= OUT2_EN_0 [2]= OUT3_EN_0 [3]= OUT4_EN_0 R13 (00h) 7:4 JD_EN1 0000 Output enables when selected jack detection input is logic 1 [4]= OUT1_EN_1 [5]= OUT2_EN_1 [6]= OUT3_EN_1 [7]= OUT4_EN_1 Table 46 Jack Detect Register Control Bits CONTROL INTERFACE SELECTION OF CONTROL MODE AND 2-WIRE MODE ADDRESS The control interface can operate as either a 3-wire or 2-wire control interface. The MODE pin determines the 2 or 3 wire mode as shown in Table 47. The WM8985 is controlled by writing to registers through a serial control interface. A control word consists of 16 bits. The first 7 bits (B15 to B9) are register address bits that select which control register is accessed. The remaining 9 bits (B8 to B0) are data bits, corresponding to the 9 data bits in each control register. MODE INTERFACE FORMAT Low 2 wire High 3 wire Table 47 Control Interface Mode Selection 3-WIRE SERIAL CONTROL MODE In 3-wire mode, every rising edge of SCLK clocks in one data bit from the SDIN pin. A rising edge on CSB/GPIO latches in a complete control word consisting of the last 16 bits. Figure 38 3-Wire Serial Control Interface |
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