RadiSys ATCA-5400 RTM Dokumentacja Pobierz pdf (Strona 47)

Update channel connections to the AMC bay

TheconnectionstoPort13ofeachAMCbayareusedforsingle‐endedgeneral‐purposeI/

O(GPIO)signals.ThesignalsonPort13powerupdisabledonboththeAMCandtheCPM,

andareE‐Keyed.TheE‐KeyingfunctionisprovidedbytheIPMContheCPMandtheMMC

ontheAMCmodules.EachcontrolstheenablepinsoftheirrespectivebufferswithGPO

pins.

IfanAMCmodulechoosestousePort13,itmustdriveGPOoutputsontheAMC‐sideTX+

andTX‐pins.Thecorrespondingcarrier‐sideRX+andRX‐signalsareappliedtotheinput

oftheredundantCPMandAMC.Thebuffersdrivethecarrier‐sideTX+andTX‐pinswith

signalsreceivedfromtheredundantCPM.TheAMCmodulereceivesthesesignalsonits

RX+andRX‐pins,andcaneitherconnectthemtoGPIinputsorinterruptinputs.

ThefastpathupdatechannelisillustratedinFigure 10.

Figure 10. AMC bay fast path update channel

Backplane

AMC

Port 12

PM8380_3

Port B[0]

Port A[0]

Port A[1]

IPMC

Port A[3]

Port A[2]

AMC

CPM

Buffer

C (Bus 3)

Zone 2

Connector

J20

Update

Channel 0

Zone 2

Connector

J20

Update

Channel 0

Port 12

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 173 174

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RadiSys ATCA-5400 RTM Dokumentacja Strona 47