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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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ES9842PRO 데이터시트(PDF) 56 Page - ESS Technology,Inc |
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ES9842PRO 데이터시트(HTML) 56 Page - ESS Technology,Inc |
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56 / 167 page  CONFIDENTIAL ADVANCE INFORMATION ES9842 PRO Product Datasheet 56 VERSION 0.5 ESS TECHNOLOGY, INC. 109 Bonaventura Drive, San Jose, CA 95134, USA Tel (408) 643-8800 WWW.ESSTECH.COM Register Overview The registers for the ES9842 PRO can be accessed either using an I2C or SPI interface. The MODE pin (pin 3) determines which interface will be used: • MODE = 1’b0 o I2C interface (pull ups on SCL & SDA required) ▪ Pin 25 SDA ▪ Pin 26 SCL ▪ Pin 27 ADDR1 ▪ Pin 28 ADDR2 o ADDR1 & ADDR2 determine the I2C address ▪ I2C Slave Address = [5’b01000, ADDR2, ADDR1, R/W] • Possible addresses are 0x40, 0x42, 0x44, 0x46 for I2C Slave Address ▪ I2C Synchronous Slave Address = [5’b01001,ADDR2,ADDR1,R/W] • Possible addresses are 0x48, 0x4A, 0x4C, 0x4E for I2C Synchronous Slave Address • MODE = 1’b1 o SPI interface o Different SPI commands allow for writing to write only registers, or write and read from other registers o The SPI Slave interface can be accessed using the Pins 25-28 • Pin 25 MOSI • Pin 26 SCLK • Pin 27 SS • Pin 28 MISO I2C Slave Address I2C Synchronous Slave Address ADDR2 ADDR1 0x40 0x48 L L 0x42 0x4A L H 0x44 0x4C H L 0x46 0x4E H H Table 29 - I2C addresses |
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