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ST7713 Datasheet(PDF) 33 Page - Sitronix Technology Co., Ltd. |
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ST7713 Datasheet(HTML) 33 Page - Sitronix Technology Co., Ltd. |
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33 / 159 page  ST7713 Ver 1.6 2008-05 33 Fig. 9.4.2 3-line serial interface write protocol (write to register with control bit in transmission) Fig. 9.4.3 4-line serial interface write protocol (write to register with control bit in transmission) 9.4.2 Read Functions The read mode of the interface means that the micro controller reads register value from the driver. To achieve read function, the micro controller first has to send a command (read ID or register command) and then the following byte is transmitted in the opposite direction. After that CSX is required to go to high before a new command is send (see the below figure). The driver samples the SDA (input data) at rising edge of SCL, but shifts SDA (output data) at the falling edge of SCL. Thus the micro controller is supported to read at the rising edge of SCL. After the read status command has been sent, the SDA line must be set to tri-state no later than at the falling edge of SCL of the last bit. 3-line serial protocol (for RDID1/RDID2/RDID3/0Ah/0Bh/0Ch/0Dh/0Eh/0Fh command: 8-bit read): |
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