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MCP3909-E/SS датащи(PDF) 31 Page - Microchip Technology |
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MCP3909-E/SS датащи(HTML) 31 Page - Microchip Technology |
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31 / 44 page ![]() 2006-2012 Microchip Technology Inc. DS22025C-page 31 MCP3909 FIGURE 5-8: Dual Channel Output Mode SPI Communication using 8-bit segments (Mode 0,1: SCK idles low). 1 2 3 4 5 6 7 8 9 101112 13 14 15 16 D14 D13 D12 D11 D7 D6 D5 D4 D3 D2 D1 D0 MCU latches data from Data is clocked out on rising edges Device on falling edges of SCK Don’t Care D7 D6 D5 D4 D3 D2 D1 D0 D11 D10 D9 D8 MCU Transmit Buffer MCU Receive Buffer CH0 Data is stored into the MCU receive register after transmission of the first 8 bits CH0 Data is stored into the MCU receive register after transmission of the second 8 bits D15 D10 D9 D8 D15 D14 D13 D12 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 MCU latches data from Data is clocked out on rising edges Device on falling edges of SCK Don’t Care MCU Transmit Buffer MCU Receive Buffer CH1 Data is stored into the MCU receive register after transmission of the third 8 bits CH1 Data is stored into the MCU receive register after transmission of the fourth 8 bits CHANNEL 0 CHANNEL 1 D14 D13 D12 D11 D7 D6 D5 D4 D3 D2 D1 D0 D15 D10 D9 D8 F1 / SDI F2 / SCK NEG / SDO F0 / CS F1 / SDI F2 / SCK NEG / SDO F0 / CS X XXX XX X X XX X X X X X X X X X XXX X X XX X X X X X X D7 D6 D5 D4 D3 D2 D1 D0 D11 D10 D9 D8 D15 D14 D13 D12 |
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