Intel Netstructure MPRTM0020 Rear Transition module manual SAS Redriver, Board Status LEDs

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Module Components

+1.8V: The 1.8 V voltage is used as the input voltage to the SAS re-driver IC.

4.3.11SAS Redriver

The MPCBL0020 Single Board Computer implements optional SAS storage access via the MPRTM0020 RTM. SAS is a 3-Gbps SERDES style bus, and a redriver is added on the RTM to effectively detect and correct the SAS OOB signals at a proper amplitude.

The specific SAS re-driver that was used is the PMC-Sierra* PM8380 Quad SMX 3G SATA/SAS Mux/Demux. The RTM implements the PM8380 device as a 1:1 re-driver. The four host ports are connected to the SBC via the Zone 3 connector.

The four SAS ports of the “B” Load-side Mux-port are connected to the External SAS connector. The “A” Load-side Mux-port is left unconnected. The PM8380 has its configuration straps set to operate in re-driving mode, rather than in Mux mode. The “B” Load-side Mux-port is configured for the default SAS amplitude, pre-emphasis, and equalization.

Figure 14 illustrates the SAS port distribution on the RTM.

Note: Only three SAS ports are routed to the MPRRTM0020 RTM because the first SAS port from the SAS HBA (port 0) is used for the on-board SAS hard drive on the MPCBL0020 SBC.

Figure 14. Physical Breakdown of SAS Ports Distribution

MPCBL0020 SBC

 

 

 

 

 

 

 

0

SAS HDD

 

0

J31P31

1

 

2

 

 

 

 

 

 

3

4-Port

 

 

 

 

SAS HBA

0

 

 

 

 

 

 

 

 

1

 

 

 

 

2

 

 

 

 

3

 

 

 

MPRTM0020 RTM

SAS

 

 

 

Re-driver

0

ConnectorSAS

Host Port

Port-B

 

 

 

 

 

2

 

 

 

3

 

A-Port (Not

 

 

Connected)

 

 

External cable to a SAS JBOD

4.3.12Board Status LEDs

The Hot Swap, Out of Service, and Health LEDs on the RTM faceplate are fronted by the MPCBL0020 Single Board Computer. These LEDs have identical state to the LEDs on the SBC faceplate and allow service personnel to verify the state of the board when servicing the board from the rear of the chassis.

Intel NetStructure® MPRTM0020 Technical Product Specification – April 2006

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Contents Intel NetStructure MPRTM0020 Rear Transition Module Technical Product SpecificationPage Contents Figures Tables Date Revision Description Revision HistoryTerm Definition Document OrganizationAcronyms and Terms Acronyms and Terms Sheet 1I2C Acronyms and Terms Sheet 2Relationship of RTM to Front Board Functional OverviewFunctional Overview Introduction RTM Installation ProcedureRTM Removal Procedure Operating the UnitDigital Ground to Chassis Ground Connection Default Grounding on MPRTM0020Digital Ground Connected to Chassis Ground Module Components Block DiagramRear Transition Module RTM Physical LayoutRTM Faceplate Connectors and LEDs Serial Port Interface Components DescriptionPin Serial Port Connector PinoutUSB Interface Gigabit Ethernet InterfacePin Signal Name SAS Connector InterfaceSAS Connector Pinout 5 T1/E1 Connector InterfaceT1 Signal E1 Signal Zone 3 Rear Transition Module Power Connector P30P30 Signal Descriptions Pin SignalPin Signal Comments Zone 3 Rear Transition Module Data/Control Connectors RTM Connector Zone 3 P31 PinoutP31 Signal Descriptions Sheet 1 RTM Connector Zone 3 P32 Pinout P31 Signal Descriptions Sheet 2Alignment Blocks RTM Connector Zone 3 P33 PinoutGpio Signal Mapping Sheet 1 Gpio Signals Pin on ADM1026Gpio Signal Mapping Sheet 2 Power SuppliesBoard Status LEDs SAS Redriver13 RJ-45 Gigabit Ethernet Port LEDs Board Status LED DescriptionsFunction Module Components RTM Management Architecture RTM FRU ControlState Machine RTM Sensor Proxy Power Budget ManagementLED Management SDR ProxyRTM Temperature Sensor Locations Sensor Data Record for RTMSensor Name Description Lower Lower Non Upper Non Critical Mechanical Specifications Detailed SpecificationsDimensions and Weight Environmental SpecificationComponent Layout Reliability Estimate Data Reliability SpecificationsMean Time Between Failure Mtbf Specifications Board ComponentsGeneral Notes Power ConsumptionWarranty Information Returning a Defective Product RMAFor the Americas For Asia and Pacific Apac For Europe, Middle East, and Africa EmeaLimitation of Liability and Remedies Sales Assistance Technical Support and Return for Service AssistanceCustomer Support Customer SupportCertifications9 European Union Agency InformationNorth America FCC Class a Canada Industry Canada ICES-003 Class aCompliance with the R&TTE Directive Safety Precautions Safety Warnings