72V51256L6BB

Overview

The Renesas 72V51256L6BB is a multi-queue flow-control device housed in a 256-pin PBGA package (17x17 mm). It provides configurable memory density options, supporting total available capacities of 1,179,648 bits and 2,359,296 bits. The architecture allows configuration from 1 to 32 queues, with independent read and write access per queue. It supports user-selectable I/O standards including 2.5V LVTTL, 1.5V HSTL, and 1.8V eHSTL. The device enables 100% bus utilization with read and write operations on every clock cycle.

Feature Summary

• Configurable memory pool supporting up to 32 independent queues
• Supports 2.5V LVTTL, 1.5V HSTL, and 1.8V eHSTL I/O standards
• Enables 100% bus utilization with simultaneous read/write capability
• Features user-programmable flags via serial port or parallel status

Applications

• Network data buffering
• Telecommunications traffic management
• Video signal processing systems

Procurement Notes

Verify the specific memory density variant required, as the family includes models for 1,179,648 bits and 2,359,296 bits. Confirm the package type is 256-PBGA (17x17) and check RoHS compliance status, as related devices in this series have been noted as non-compliant in some documentation. Ensure the ordering suffix matches the desired voltage and speed grade.

Selection Notes

Select based on the required number of queues and bus width configuration. The device supports various bus matching options such as x36 input to x36 output or x9 input to x36 output. Verify that the system timing requirements align with the high-speed operation capabilities, typically around 200 MHz, and ensure the power supply voltages match the selected I/O standard.

Part Context

This component belongs to the IDT/Renesas 72T/72V multi-queue flow-control family. It shares architectural similarities with parts like the IDT72T51556 and 72V51253, offering flexible queue configurations for high-throughput applications. The 72V51256L6BB specifically utilizes a 256-ball grid array package suitable for surface mount assembly.

Replacement Considerations

Direct replacements within the same family include the IDT72T51556 and 72V51253 series devices. Verify pin compatibility and memory density specifications before substitution. Note that older variants may differ in I/O voltage support or package dimensions.