PCA9546APW,112

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PCA9546APW,112 Application Field and Working Principle

Interface - Specialized

Chip work premise is based on the needs of analog circuit design and digital circuit design in the communication of application, it is necessary to bridge a bridge between the two zones. At this time, the chip bridge is used to bridge the two different communication modes as shown in the figure:

PCA9545APW and PCA9546APW is a series of the I2C switch chip developed by the Texas Instruments semiconductor company. It is mainly used in the I2C communication remote control between the master and slave terminal, to achieve the communication between the two ports after the data is converted. The chip forms an I2C switch matrix without optocoupler and hot plug technology, which is a highly integrated I2C device that can connect up to 16 external devices to a single I2C bus. It contains one serial I2C-bus port connecting two independent banks of two ports. The two ports’/banks’/devices data can be accessed through the same I2C-bus.

The main features of this chip are as follows:

• Provides one on-chip serial I2C-bus compatible bidirectional port (which can be connected up to 16 external devices), supports serial clock frequency up to 100kHz;
• Each input port can be independently enabled and selected to be connected to the serial output port. BANK0 and BANK1 can also be selected simultaneously, forming a four-channel data increase/decrease channel.
• The locking register prevents accidental data transmission after power-on.
• Each port can be enabled/disabled through individual control pins.

PCA9545APW and PCA9546APW belong to the I2C switch chip family of Texas Instruments Semiconductor Company, belonging to the field of interface specialists. Its main application field is in the occasion of needing conversion between two communication modes in analog circuit design, such as digital circuit design, our usual bridge in the bridge, it is easy to achieve data communication between the two ports and then completed the two communication modes of data information transmission. It also has a wide range of applications in industrial automation, consumer electronics, medical equipment, and mobile devices.

The principle of PCA9545APW and PCA9546APW is to provide a serial I2C-bus compatible bidirectional port after being connected to the external device. This I2C port has two independent banks of two channels. Each port can be independently enabled / disabled, and a locking register is also provided to prevent accidental data transmission after powering on. The rising serial clock frequency rate can be up to 100kHz. The chip can model the I2C matrix without optocoupler and hot plug technology and provide a highly integrated I2C device.

In short, PCA9545APW and PCA9546APW are chip bridges developed by Texas Instruments Semiconductor Company in the field of specialized interfaces. This chip is mainly used in remote I2C communication between the master and slave sides to achieve the data conversion and communication between two ports. It has wide applications in industrial automation, consumer electronics, medical equipment, and mobile devices, and it is easy to achieve data communication with a single I2C-bus.

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