72221L15JI

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Logic - FIFOs Memory - 72221L15JI application field and working principle

72221L15JI is a type of logic-FIFOs memory and it is widely used in digital communication circuits and so on. So understanding its application field and working principle will help us to better control the device for a better use.

1. application field

72221L15JI can be flexibly used in a wide range of digital communication circuits, such as cable access gateways, Ethernet gateways, high-speed packet switched networks, broadband remote access servers, cable modems and point-to-point access networks. It can efficiently reduce the communication errors. Here are some of its advantages:

• High speed and power: 72221L15JI offers up to 150 Mbps channel bandwidth and 10 Gbps Mbit/s memory synchronization.
• Reliability: 72221L15JI uses a patented method to guarantee the transfer of data packets between network elements.
• Low power consumption: 72221L15JI features a built-in power management system that can reduce the power consumption of the device.
• Compatibility: 72221L15JI is a universal device that is compatible with a wide range of digital communication protocol, such as ATM, SONET/SDH, Ethernet, etc.
• Protection: 72221L15JI provides ESD and surge protection for the integrity and reliability of network communication.

2. Working Principle

72221L15JI operates on the basis of a first-in-first-out (FIFO) design. In the FIFO system, data is moved sequentially in a queue with the data on the left side being the first to be processed and the data on the right side being the last to be processed. In a FIFO system, each block of data is separated and stored in a series of shift registers. The shift registers contain several buffer registers, each of which carries two bytes of data. The data is then transmitted from the buffer registers in a sequence controlled by the FIFO controller.

When data enters the shift register, it is checked against the signal synchronization level and either written into or read out of the buffer registers accordingly. An address generator is used to map the address of each memory cell, so that the system can access the correct data in the FIFO. Once the data is in the shift register, the data is then processed by the FIFO system and re-stored in the FIFO in the correct order.

The FIFO controller is responsible for managing the sequence of data processing within the 72221L15JI. It generates the read and write strobes, as well as the address signals for the address generator. The FIFO controller also reads and writes the data from the shift register and updates the FIFO’s external registers. In addition, the controller is responsible for generating status flags, such as full and empty flags, frame acquisition flags and data availability flags.

72221L15JI is a powerful logic-FIFOs memory suitable for a wide range of digital communication circuits. Its FIFO architecture provides reliable transfer of data, low power consumption and high bandwidth. Moreover, the device’s compatibility with numerous protocols makes it a flexible and universally applicable networking solution.

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