Datasheet > PEX8625-AA50BCF

PEX8625-AA50BCF

更新时间： 2024-01-13 21:52:02

品牌	Logo	应用领域
PLX		/
页数	文件大小	规格书
5页	419K
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Micro Peripheral IC

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PEX8625-AA50BCF 技术参数

生命周期：	Obsolete	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.84
Base Number Matches：	1

PEX8625-AA50BCF 数据手册

PEX 8625, PCI Express Gen 2 Switch, 24 Lanes, 24 Ports

The PEX 8625 can also be configured in Multi-Host mode

Multi-Host & Failover Support

where users can choose up to Eight ports as host/upstream

ports and assign a desired number of downstream ports to

each host. In Multi-Host mode, a virtual switch is created

for each host port and its associated downstream ports

inside the device. The traffic between the ports of a virtual

switch is completely isolated from the traffic in other

virtual switches. Figure 2 illustrates some configurations

of the PEX 8625 in Multi-Host mode where each ellipse

represents a virtual switch inside the device.

In Multi-Host mode, PEX 8625 can be configured with up

to Eight upstream host ports, each with its own dedicated

downstream ports. The device can be configured for 1+1

redundancy or N+1 redundancy. The PEX 8625 allows the

hosts to communicate their status to each other via special

door-bell registers. In failover mode, if a host fails, the

host designated for failover will disable the upstream port

attached to the failing host and program the downstream

ports of that host to its own domain. Figure 4a shows a two

host system in Multi-Host mode with two virtual switches

inside the device and Figure 4b shows Host 1 disabled

after failure and Host 2 having taken over all of Host 1’s

end-points.

The PEX 8625

also provides

several ways to

configure its

registers. The

device can be

configured

through strapping

pins, I²C

interface, host

software, or an

optional serial

EEPROM. This

allows for easy

Hot Plug for High Availability

Hot plug capability allows users to replace hardware

modules and perform maintenance without powering down

the system. The PEX 8625 hot plug capability feature

makes it suitable for High Availability (HA)

debug during the

development phase, performance monitoring during the

operation phase, and driver or software upgrade.

applications. Four downstream ports include a Standard

Hot Plug Controller. If the PEX 8625 is used in an

application where one or more of its downstream ports

connect to PCI Express slots, each port’s Hot Plug

Controller can be used to manage the hot-plug event of its

associated slot. Every port on the PEX 8625 is equipped

with a hot-plug control/status register to support hot-plug

capability through external logic via the I²C interface.

Dual-Host & Failover Support

In Single-Host mode, the PEX 8625 supports a Non-

Transparent (NT) Port, which enables the

implementation of dual-

host systems for

redundancy and host

failover capability. The

NT port allows systems

to isolate host memory

domains by presenting

the processor

subsystem

as an endpoint rather

than another memory

system. Base address

registers are used to

SerDes Power and Signal Management

The PEX 8625 supports software control of the SerDes

outputs to allow optimization of power and signal strength

in a system. The PLX SerDes implementation supports

four levels of power – off, low, typical, and high. The

SerDes block also supports loop-back modes and

advanced reporting of error conditions, which enables

efficient management of the entire system.

translate addresses;

doorbell registers are used to send interrupts between the

address domains; and scratchpad registers (accessible by

both CPUs) allow inter-processor communication (see

Figure 3).

Page 2 of 5

10/8/2009, Version 1.0

123 4 5

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与PEX8625-AA50BCF相关器件

型号	品牌	获取价格	描述	数据表
PEX8632	PLX	获取价格	PCIe Gen2, 5.0GT/s 32-lane, 12-port Switch
PEX8632-AA50BC	PLX	获取价格	Micro Peripheral IC,
PEX8632-AA50BCF	PLX	获取价格	Micro Peripheral IC,
PEX8632-AA50BCG	PLX	获取价格	PCIe Gen2, 5.0GT/s 32-lane, 12-port Switch
PEX8632-AARDK	PLX	获取价格	PCIe Gen2, 5.0GT/s 32-lane, 12-port Switch
PEX8632-BB50BC	PLX	获取价格	Micro Peripheral IC
PEX8632-BB50BCF	PLX	获取价格	PCI Bus Controller, CMOS, PBGA676, 27 X 27 MM, LEAD FREE, FCBGA-676
PEX8632-BB50BIF	PLX	获取价格	PCI Bus Controller, CMOS, PBGA676, 27 X 27 MM, FCBGA-676
PEX8632-BB50RBCF	PLX	获取价格	Micro Peripheral IC,
PEX8636-AA50BCF	PLX	获取价格	Micro Peripheral IC

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