VSC7147-05 Datasheet | Vitesse Semiconductor

FEATURES - NCITS T11 Fibre Channel pliant at 1.0625Gb/s and 2.125Gb/s - Two Fibre Timer® Cells Configured as: - Repeaters for Low Latency - Retimers for True Fibre Channel pliance - Six Port Bypass Circuits (PBCs) - Two Digital Signal Detect Units (SDUs) - Cable Equalization on All High-Speed Inputs - Speed-Independent Tx and Rx Paths to Aid in Auto-Speed Negotiation - 106.25MHz Reference Clock - 5V-Tolerant LVTTL Inputs - VSC7147-0x Adds an Analog Signal Detect (ASD) Function to the VSC7147 - Single 2.5V Supply, 1.6W Typical Power - 100-Pin, 14mm Exposed Pad TQFP Package APPLICATIONS - Disk Arrays - JBODs GENERAL DESCRIPTION The VSC7147-01 and VSC7147-05 contain six Port Bypass Circuits (PBCs), dual Fibre Timer repeater/retimer cells, and dual Signal Detect Units (SDUs). These functions are integrated into a single part to minimize part count, cost, high-frequency routing, and jitter. Each Fibre Timer cell contains an all-digital Clock Recovery Unit (CRU) that can be configured as either a repeater or a retimer. Repeaters recover the ining signal and retransmit the data synchronously to the recovered clock in order to attenuate jitter so that downstream devices see high amplitude, low jitter signals. Retimers eliminate jitter transfer by retiming the recovered data to the local reference clock. An add/drop FIFO inserts or deletes 40-bit fill words to match the ining data rate to the local reference clock, ensuring Fibre Channel pliance at the output of the retimer. The VSC7147-01 and VSC7147-05 are modifications of the VSC7147 that incorporate an Analog Signal Detect function not found in the VSC7147, as well as a number of other modifications aimed at improving the performance of the part. The -01 and -05 variants were added to the part number to facilitate customer ordering in situations where both the VSC7147 and VSC7147-0x may be used at the same time.The -05 variant is identical to the -01 variant, with the exception that it utilizies a material set that is...