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HDMP-0440, HDMP0450, HDMP-0450

Table of contents:
Info of HDMP-0440
Info of HDMP0450
Info of HDMP-0450

HDMP-0440, HDMP0450, HDMP-0450 Selling Leads, Datasheet

MFG:Agilent Package Cooled:QFP D/C:0037+

HDMP-0440, HDMP0450, HDMP-0450 Datasheet download

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Part Number: HDMP-0440

MFG: Agilent

Package Cooled: QFP

D/C: 0037+

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HDMP-0440 General Description

The HDMP-0440 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-0440, 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-0440'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-0440's FM_NODE[n]± differential input pins.

Figure 2 shows connection diagrams for disk drive array applications. When the "disk bypassed" mode is selected, the disk drive is either absent or non-functional and the loop bypasses the hard disk. The "disk bypassed" mode is enabled by pulling the BYPASS[n]- pin low. Leave BYPASS[n]- floating to enable the "disk in loop" mode. HDMP- 0440s may be cascaded with other members of the HDMP- 04XX/HDMP-05XX family through the appropriate FM_NODE[n]± and TO_NODE[n]± pins to accommodate any number of hard disks (see Figure 3). The unused cells in the HDMP-0440 may be bypassed by using pulldown resistors on the BYPASS[n]- pins for these cells. An HDMP-0440 may also be configured as five 1:1 buffers, as two 2:1 multiplexers or as two 1:2 buffers.

HDMP-0440 Maximum Ratings

SYMBOL	Parameter	Units	MIN	MAX
V_CC	Supply Voltage	V	-0.5	4.0
V_IN,L_VTTL	LVTTL Input Voltage	V	-0.5	VCC + 0.5[1]
V_IN,H_{S_IN}	HS_IN Input Voltage (Differential)	mA	200	2000
I_O,L_VTTL	LVTTL Output Sink/Source Current	mA		±13
T_stg	Storage Temperature	°C	-65	+150
T_J	Junction temperature	°C	0	+125

HDMP-0440 Features

• Supports 1.0625 GBd Fibre Channel operation
• Supports 1.25 GBd Gigabit Ethernet (GE) operation
• Quad PBC in one package
• Equalizers on all inputs
• High-speed LVPECL I/O
• Buffered Line Logic (BLL) outputs (no external bias resistors required)
• 0.5 W typical power at VCC = 3.3 V
• 44 Pin, 10 mm, low-cost plastic QFP package

HDMP-0440 Typical Application

• RAID, JBOD, BTS cabinets
• Two 2:1 muxes
• Two 1:2 buffers
• 1N Gigabit serial buffer
• N 1 Gigabit serial mux

HDMP-0440 Connection Diagram

HDMP-0450 General 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 inputpins.

Figure 2 shows connection diagrams for disk drive array applications. When the "disk bypassed" mode is selected, the disk drive is either absent or nonfunctional and the loop bypasses the hard disk. The "disk bypassed" mode is enabled by pulling the BYPASS[n]- pin low. Leave BYPASS[n]- floating to enable the "disk in loop" mode. HDMP-0450s may be cascaded with other members of the HDMP-04XX/HDMP-05XX family through the appropriate FM_NODE[n]± and TO_NODE[n]± pins to accommodate any number of hard disks (see Figure 3). The unused cells in the HDMP-0450 may be bypassed by using pulldown resistors on the BYPASS[n]- pins for these cells.

An HDMP-0450 may also be configured as five 1:1 buffers, as two 2:1 multiplexers, or as two 1:2 buffers.

HDMP-0450 Maximum Ratings

Symbol	Parameter	Units	Min.	Max.
v_cc	Supply Voltage	V	-0.5	4.0
V_IN,LVTTL	LVTTL Input Voltage	V	-0.5	V_CC+ 0.5[1]
V_{IN,HS_IN}	HS_IN Input Voltage (Differential)	mV	200	2000
IO,L_VTTL	LVTTL Output Sink/Source Current	mA		+13
T_stg	Storage Temperature	°C	-65	+150
T_j	Junction Temperature	°C	0	+125
Note: 1. Must remain less than or equal to absolute maximum VCC voltage of 4.0 V.

HDMP-0450 Features

• Supports 1.0625 GBd Fibre Channel operation
• Supports 1.25 GBd Gigabit Ethernet
(GE) operation
• Quad PBC in one package
• Signal detect on FM_NODE[0] input
• Equalizers on all inputs
• High speed LVPECL I/O
• Buffered Line Logic (BLL) outputs
(no external bias resistors required)
• 0.5 W typical power at VCC = 3.3 V
• 44 Pin, 10 mm, low-cost plastic QFP package

HDMP-0450 Typical Application

• RAID, JBOD, BTS cabinets
• Two 2:1 muxes
• Two 1:2 buffers
• 1 => N gigabit serial buffer
• N => 1 gigabit serial mux

HDMP-0450 Connection Diagram

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