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ES9820 Datasheet(PDF) 41 Page - ESS Technology,Inc |
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ES9820 Datasheet(HTML) 41 Page - ESS Technology,Inc |
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41 / 117 page  • CONFIDENTIAL ADVANCE INFORMATION 0.3 ESS TECHNOLOGY, INC. 109 Bonaventura Drive, San Jose, CA 95134, USA Tel (408) 643-8800 WWW.ESSTECH.COM 41 ES9820 Product Datasheet SPI Slave Interface The SPI slave interface is used when the MODE pin (pin 3) is pulled high. • The SPI Slave interface can be accessed using the Pins 25-28 • Pin 25 MOSI • Pin 26 SCLK • Pin 27 SS • Pin 28 MISO The 4-wire SPI data format is: Command (1 byte) + Address (1 byte) + Data SPI commands: • 0x01: Read • 0x03: Write • 0x07: Write-only Register Addresses 192-194 (0xC0 – 0xC2) SS SCLK MISO MOSI C7 C6 C0 A7 A6 A0 D7 D6 D0 Single byte Write 0 8 16 Hi gh Z SS SCLK MISO MOSI C7 C6 C0 A7 A6 A0 D7 D6 D0 Single byte Read 0 8 16 Hi gh Z SS SCLK MISO MOSI C7 C6 C0 A7 A6 A0 Multiple byte Read 0 8 16 D7 D6 D0 D7 Byte 0 24 Byte 1 Hi gh Z Figure 7 - SPI Timing diagrams Register Map |
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