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HDMP-0450

Part Number	HDMP-0450
Manufacturer	Hewlett-Packard
Description	Quad Port Bypass Circuit
Published	Dec 28, 2006
Detailed Description	www.DataSheet4U.com Agilent HDMP-0450 Quad Port Bypass Circuit for Fibre Channel Arbitrated Loops Data Sheet Descripti...
Datasheet	HDMP-0450 PDF File

Overview

www.
DataSheet4U.
com Agilent HDMP-0450 Quad Port Bypass Circuit for Fibre Channel Arbitrated Loops Data Sheet Description The HDMP-0450 is a Quad Port Bypass Circuit (PBC) which provides a low-cost, low-power physical-layer solution for Fibre Channel Arbitrated Loop (FC-AL) disk array configurations.
By using a PBC such as the HDMP-0450, hard disks may be pulled out or swapped while other disks in the array are available to the system.
A PBC consists of multiple 2:1 multiplexers daisy chained together.
Each port has two modes of operation: “disk in loop” and “disk bypassed.
” When the “disk in loop” mode is selected, the loop goes into and out of the disk drive at that port.
For example, data goes from the HDMP-0450’s TO_NODE[n] ± differential output pins to the Disk Drive Transceiver IC’s (e.
g.
, an HDMP-1636A) Rx differential input pins.
Data from the Disk Drive Transceiver IC’s Tx differential outputs goes to the HDMP-0450’s FM_NODE[n] ± differential input pins.
Figure 2 shows conne...

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