72V801L10PFG8

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The 72V801L10PFG8 is a high-performance 1M x 8-bit (10Mb) asynchronous FIFO that operates from 3.3V supply as well as 2.5V and 1.8V. It is a feature rich FIFO that is designed to deliver reliable performance at high data rates, even in the most demanding applications. As a FIFO, 72V801L10PFG8 provides an ideal solution for buffering data streams, allowing data to be synchronized within the data transfer path regardless of the clock rate of the various sources and destinations. It can be configured as both source and target FIFOs in communication systems, allowing data to be provided at a rate that can be different from the clock of the systems.

72V801L10PFG8 is a Random Access Memory (RAM) based FIFO with separate read and write ports. It consists of an integrated bank of 1024 x 8 RAM cells and an integrated First In First Out (FIFO) memory control unit. Each RAM cell behaves like a static random access memory (SRAM) that stores the 8-bit of data for each word. The read and write operations are asynchronous and independent of each other. The FIFO memory control unit effectively synchronizes the read and write operations in the RAM.

Application Fields: 72V801L10PFG8 can be used in a variety of applications including data communication, storage and tracing. It is commonly used to process or buffer short data streams. Applications include synchronizing vertically integrated data acquisition systems, matching data rate on line interfaces and managing multi processor networks.

Working Principle: In the operation of the device, when the write pointer is equal to the read pointer, the FIFO is empty. When the write pointer is greater than the read pointer, the FIFO is full. When writing to the FIFO, the write pointer is incremented. When reading from the FIFO, the read pointer is incremented. When data is read from the FIFO, it is also simultaneously written from the RAM. The RAM is reset to its all ‘1’ state before the FIFO is operated, allowing the detection of EOF data frames.

The read and write operations in the 72V801L10PFG8 are initiated by access commands issued over the external I/O interface. The read access command conveys data from the FIFO to the external location, while the write access command conveys data from the external location to the FIFO. Data may be read and written to the FIFO at any time in any order. A FIFO-specific write enable (WE) input pin is used to enable the write data into the FIFO. The WE input eliminates the need for external logic associated with asynchronous FIFOs by eliminating any associated write/read conflicts.

The 72V801L10PFG8 has two fixed Pointer inputs, readsPoint andWrpoint, which are addressed using two sets of 6-bit write addresses, the read- and write addresses. These are used to address the FIFO locations to be read from and written to. The FIFO has two output data pins for read and write operations, respectively. ReadData pin is an input-only pin, which produces synchronous output signals for read accesses, while WriteData pin is an output only pin, which produces synchronous output signals for write Accesses.

In order to ensure reliable and efficient operation, the 72V801L10PFG8 includes several status registers and control logic. A FIFO Control Logic Register controls certain aspects of the FIFO operation such as resetting the FIFO, setting the read and write pointer values, suspending the FIFO and providing status information. The FIFO status register provides information such as empty, full, and hit status information. The device also has several interrupts that, when enabled, indicate an empty and/or full condition.

In summary, 72V801L10PFG8 is a versatile and reliable FIFO device, suited for a wide range of applications requiring both source and target FIFOs. It is able to support multi-processor networks, data communication and storage, short data streams and a variety of other data related tasks. Its range of integrated control logic and registers, coupled with its ability to operate from low voltage supplies, make it an attractive and cost-effective solution for any such application.

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