DS92LX1622SQX/NOPB

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Interface - Serializers and Deserializers

Infrared remote control systems such as TV and home theater setups use IR remote control protocols to send signals to a receiver. To achieve this, remotes use a serial-to-parallel converter. The DS92LX1622SQX/NOPB are an extremely popular part for these applications. This article will discuss the application field and working principle of the DS92LX1622SQX/NOPB.

Application Field

The DS92LX1622SQX/NOPB is a very popular IC for IR remote control applications. It is a serial-to-parallel converter that is used to interface between the two types of interfaces; the serial infrared (IR) signaling used by a remote control, and the parallel interface of its microcontroller. This IC is suitable for a wide range of applications, including televisions, STBs, home theater systems, and other consumer electronics devices.

The DS92LX1622SQX/NOPB has a low standby current of 5 µA, which makes it suitable for use in battery-powered devices, such as remote controls. Also, this IC features a wide operating temperature range (−40 °C to 85 °C) and a high ESD protection of up to 8 kV. This makes it suitable for use in hostile environments, such as outdoor applications.

Working Principle

The DS92LX1622SQX/NOPB is a 4-bit serial-to-parallel converter. It takes in the serial bit stream from the infrared signal and converts it into the 4-bit parallel data interface required by the microcontroller. The operation of the IC is based on a single-ended shift register, which reads in the serial bit stream and converts it into a parallel data format.

The IC can process data at a rate of up to 8 Mbps. It is powered by a single 3.3-volt supply, with a maximum power consumption of 16 mW. The IC has two sets of pins. The first set is used to control the IC, while the other is used to receive and transmit data.

The IC has two data inputs, one for serial data and one for parallel data. It also has two sets of registers, one for the serial data and one for the parallel data, and a data enable pin. The IC supports a wide range of baud rates, from 9.6 Kbps to 8 Mbps.

The IC also has a power-on reset pin, which is used to reset the internal registers and clear the parallel data when the IC is first powered up. Additionally, the IC has an auto-calibration function, which allows the IC to ensure that the data is correctly read and written to the microcontroller.

Lastly, the IC also has a fail-safe function, which ensures that the data is not lost due to unexpected events, such as power glitches or system reset events. This ensures a reliable operation of the remote control system.

Conclusion

In conclusion, the DS92LX1622SQX/NOPB is an extremely popular and reliable IC for IR remote control applications. It is a 4-bit serial-to-parallel converter that enables the transmission of data between the remote and its microcontroller. The IC has a low standby current, a wide operating temperature range, and a high ESD protection to ensure reliable operation in hostile environments. The IC also has a power-on reset pin, an auto-calibration function, and a fail-safe function to ensure data integrity.

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