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PS9702B Datasheet(PDF) 9 Page - List of Unclassifed Manufacturers |
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PS9702B Datasheet(HTML) 9 Page - List of Unclassifed Manufacturers |
9 / 41 page PULSUS PS9702B Copyright © 2000-2003, Pulsus Technologies Inc. 9 2003 REV1.2 Control Interface Protocol 1. I2C Control Interface The pin SPI/I2C selects the control interface method. When the pin SPI/I2C is grounded, the control interface method is I 2C interface. The I 2C slave address can be varied using two I2C slave address setting pin, I2C_AD0 and I2C_AD2. The base slave address is 0x38 with I2C_AD0 and I2C_AD2 pin grounded. Figure below shows you the configuration of slave address. Start Condition SCL I2C_AD2 I2C_AD0 SDA AD2 AD0 0111 0 R/W ACK Slave Address (7 bit) I2C_AD2 I2C_AD0 PS9702B Slave Address 0 0 0x38 (0b0111000) 0 1 0x39 (0b0111001) 1 0 0x3C (0b0111100) 1 1 0x3D (0b0111101) The control registers has 8-bit address space and 16-bit or 24-bit data length. If the upper two bits of register address are all HIGH, 11xx xxxx, then the data length will be three bytes (24 bits). The other case, the data length will be two bytes (16 bits). The I 2C control protocol diagram is in the next page. |
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