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CXD1910AQ Datasheet(PDF) 11 Page - Sony Corporation |
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CXD1910AQ Datasheet(HTML) 11 Page - Sony Corporation |
11 / 28 page – 11 – CXD1910AQ 2. Serial Interface The CXD1910AQ supports both I2C-BUS (high-speed mode) and SONY's serial interface. These modes can be selected by XIICEN input pin as shown in Table 2-1 below. XIICEN SI/SDA SCK/SCL XCS/SA SO SI SCK XCS SO SDA SCL SA High-Z H L SONY SIO mode I2C mode Table 2-1 2-1. I2C-BUS interface The CXD1910AQ becomes a slave transceiver of I2C-BUS, and supports the 7-bit slave address and the high- speed mode (400K bit/s). 2-1-1. Slave address Two kinds of slave address (88H, 8CH) are selectable by the SA signal, as shown in Table 2-2 below. A6 A5 A4 A3 A2 A1 A0 R/W 1 0 0 0 1 SA 0 X Table 2-2 2-1-2. Write cycle S slave address W start address A A write data A write data A P from master to slave from slave to master "0" D7 start address D6 D5 D4 D3 D2 D1 D0 ADR [4 : 0] After the slave address is supplied from the master, the data in the next transfer cycle is set up inside the start address register of this IC as start address of the control register. In subsequent cycles, the data supplied from the master is written in the addresses indicated by the control register address. The set control register address is automatically incremented with the completed transfer of each byte of data. |
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