I2C (inter-integrated circuit) equipment management method and complex programmable logic device (CPLD)
A technology of programming logic and equipment, applied in the field of data communication, can solve the problem of limited number of C equipment and achieve effective management
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[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below through specific embodiments and with reference to the accompanying drawings.
[0024] In this application, all I in advance for the host 2 The C device assigns a unique device ID, configure the device ID with the I 2 The corresponding relationship between the SCL group and the SDA analog switch group where the C device is located, configure the corresponding relationship between each SCL group and the SCL gating control register value, and configure the corresponding relationship between each SDA analog switch group and the SDA gating control register value.
[0025] when I 2 C controller (or with I 2 C controller devices, such as microcontroller CPU, etc.) access control either I 2 C device, I 2 The C controller puts the I 2 The device ID of the C device is sent to the CPLD, and the CPLD parses the SCL group...
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