SpaceVPX Tutorial 06282016

Air Force Research Laboratory

Integrity Service Excellence

Charles Patrick CollierSenior Electrical Research Engineer

AFRL Space VehiclesAir Force Research Laboratory

06/28/2016

NGSIS SpaceVPX and SpaceVPXLite

Distribution Statement A: Approved for Public Release

2

Bottom Line Up Front (BLUF)

What is wrong with just using legacy space electronics?

• Legacy space systems are often point solutions• Re-use is not a priority• Don’t have the full range of redundancy options (dual-string, M-

of-N, etc.) built-in given the particular application and its needs.• Internal interfaces are often proprietary and application specific• Modules are not designed to inter-operate at either hardware

or software level


3

1990

- 19

9419

95

2000

2005

2007

2010

2012

2014

2015

2016

ANSI/VITA 1 VME64 includes 32 and 64-bit address; P1 and P2 connectors expanded from 96 to 100 pins each

ANSI/VITA 41.0 VXS adds new P0 connector to support high baud rates of Packet Switch fabrics such as SRIO. VME’s P1 and P2 retained.

ANSI/VITA 5 – 1995 RACEway Interlink first of the Switched Fabrics standardized by VITA Circuit switched, parallel signaling as oppose to serial – superseded by ANSI/VITA 5.1 1999 (S2011)

ANSI/VITA 46.0-2007 VPX provide many more high baud rate pins at the expense of backward compatibility.

ANSI/VITA 66.0-2011 adds blind mate optical connectors to VPX

ANSI/VITA 67.0-2012 adds blind mate coax connectors to VPX

ANSI/VITA 46.0-2007 (R2013) VPX revision taking input from VITA 65 Working Group

ANSI/VITA 65-2010 (R2012) second release of OpenVPX

ANSI/VITA 78-2015 SpaceVPX specification is released that provides a Space specific VPX version for Space applications.

VITA 78.1 – SpaceVPXLite 3U version of SpaceVPX is underdevelopment for SWaP constrained Space applications – a release is expected in 2016.

ANSI/VITA 65-2010 OpenVPX brings system perspective to VPX

Timeline VME, VXS, VPX, OpenVPX, SpaceVPX, and SpaceVPXLite


4

Outline

• What is SpaceVPX?• SpaceVPX Use Cases and Topologies• SpaceVPX Slot Profiles• SpaceVPX Backplane Profile• SpaceUM - Provisions for Redundancy and

Fault Tolerance• SpaceVPX Mechanical General Specifications• Backup


5

What are SpaceVPX’ s Goals

Created to bridge the VPX standards to the space market. • SpaceVPX addresses both interoperability (as OpenVPX does)

and space application needs (not in OpenVPX).• SpaceVPX defines Payload, Switch, Controller, and Backplane

module profiles to meet needs of space applications• SpaceVPX adds features to the Utility Plane for fault tolerance

• Point-to-point not bussed to tolerate faults: failure on module does not affect entire system.

• Space Utility Module added to provide dual-redundant source for Utility Plane implementations.

• SpaceVPX defines use of SpaceWire for Control Plane over Ethernet (OpenVPX preferred solution).


6

What is SpaceVPX?

Develop• Enhanced set of backplane specifications that are based upon

existing commercial standards with added features required for space applications.

Increase• Interoperability and compatibility between manufacturers

and integrators, while simultaneously increasing affordability through the use of standard sets of hardware.


7

VITA 65, RIO ver.2.0

Fault Tolerance enhancements

VITA 46.3SRIO on VPX

VITA 46.9PMC/XMC

VITA 46.11Sys. Management

VITA 48.2Conduction

SpaceVPX (VITA 78)SpaceVPXLite (VITA 78.1)

What is in SpaceVPX?

SpaceVPX/SpaceVPXLite allows a user to configure a system

from board level products purchased from different vendors - thus the

focus on interoperability.


8

SpaceVPX Building Blocks

Payl

oad

inpu

t

Proc

essi

ng c

ard

Proc

essi

ng c

ard

Swit

ch c

ard

Mem

ory

card

Out

put

card

Pow

er c

ard

Payl

oad

inpu

t

Payl

oad

inpu

t

Payl

oad

inpu

t

Proc

essi

ng c

ard

Proc

essi

ng c

ard

Swit

ch c

ard

Mem

ory

card

Out

put

card

Pow

er c

ard

Payl

oad

inpu

t

Payl

oad

inpu

t

Payl

oad

inpu

t

Proc

essi

ng c

ard

Proc

essi

ng c

ard

Swit

ch c

ard

Mem

ory

card

Out

put

card

Pow

er c

ard

Payl

oad

inpu

t

Payl

oad

inpu

t

SATCOM System

VPX1

VPX2

VPX3

VPX7

VPX8

VPX9

VPX4

VPX6

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

IPMC IPMC IPMC IPMC IPMC IPMC

ContrlSwitch

ContrlSwitch

Power A and B

Switched ManagementPlane (IPMB)

Control Plane(TP)

Data Plane(DFP)

Slot numbers are logical, physical slot numbers may be different

Payload slotsPayload slots

Switched Utility PlaneIncludes power

UM5

Controller SelectionA and B (HLD)

Data Plane

Data Plane

Data Plane

Data Plane

Data Plane

Data Plane

Data Plane

Data Plane

ExpanPlane

ExpanPlane

ExpanPlane

ExpanPlane

ExpanPlane

ExpanPlane

SW

ChMC ChMC

TP

TP

Cont

rol S

lot

Cont

rol S

lot

Spae

cUM

Slot

s


9

Simplified SpaceVPX Development Flow

• Determine application requirements• Size, weight and power• Processing, fabric and I/O requirements

• Select overall system parameters• 3U or 6U?• Switching topology?• Number and type of slots?

• Assemble development vehicle• COTS development chassis• COTS boards• COTS or custom RTMs

• Design deployment system• Typically custom backplane• Typically route I/O signals to custom

I/O slot or bulkhead connector


10

Who is Involved in SpaceVPX?


11

Who is Involved in the RapidIO Space Device Class?


http://www.ti.com/hdr_home

http://www.xilinx.com/

http://www.latticesemi.com/

http://www.octasic.com/index.php

http://www.caviumnetworks.com/index.html

http://www.altera.com/

http://www.ecoinsite.com/2012/11/arm-green-servers.html

12

Outline

• What is SpaceVPX?• SpaceVPX Base Use Case and Topologies• SpaceVPX Slot Profiles• SpaceVPX Backplane Profile• SpaceUM - Provisions for Redundancy and



13

Basic SpaceVPX Payload Use Case


14

Data Plane Switch Topology

Full Mesh Topology

Dual-Star Topology using two Switch Slots

Dual-Star Topology with PCI Expansion

PCI Expansion


15

Outline




16

Profiles in SpaceVPX

A physical mapping of ports onto a slot’s backplane connectors

A physical specification of a backplane

Extends a slot profile by mapping protocols to a module’s ports

VPX1

VPX2

VPX3

VPX7

VPX8

VPX9

VPX4

VPX6

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

IPMC IPMC IPMC IPMC IPMC IPMC

ContrlSwitch

ContrlSwitch

Power A and B

Switched ManagementPlane (IPMB)

Control Plane(TP)

Data Plane(DFP)


Payload slotsPayload slots

Switched Utility PlaneIncludes power

UM5

Controller SelectionA and B (HLD)

Data Plane

Data Plane

Data Plane

Data Plane

Data Plane

Data Plane

Data Plane

Data Plane

ExpanPlane

ExpanPlane

ExpanPlane

ExpanPlane

ExpanPlane

ExpanPlane

SW

ChMC ChMC

TP

TP

Cont

rol S

lot

Cont

rol S

lot

Spae

cUM

Slot

s

Slot Profile

Backplane ProfileProfile Name Data Plane

4 FP

Expansion Plane P2/J2

Control Plane 2

TP

UserDefined

DP01 to DP04

CPtp01 to

CPtp02

P3/J3, P5/J5

MOD6-PAY-4F1Q2T-12.2.1-1-cc

sRIO 2.2 at 3.125 Gbaud per Section 5.2


SpaceWire per Section 5.2.1

User Defined DIFF pins

Module Profile

Also: Power Keying and Chassis profilesDistribution Statement A: Approved for Public Release

17

Lanes and Pipes in VPX

Term Definition

LaneAn electrical lane consists of one transmit differential pair and one receive differential pair, point-to-point, crossed connection (transmit connects to receive and receive to transmit).An optical lane consists of a transmit and receive fiber, point-to-point, crossed connection.

Pipe

A physical aggregation of differential pairs used for a common function that is characterized in terms of the total number of differential pairs. A Pipe is not characterized by the protocol used on it. The following Pipes are predefined by OpenVPX:Ultra-Thin Pipe (UTP): A Pipe comprised of 2 differential pairs. Example: 1000BASE-KX Ethernet, 1x Serial RapidIO, and x1 PCIe interfaces.Thin Pipe (TP): A Pipe composed of 4 differential pairs. Example: 1000BASE-T interfaces.Fat Pipe (FP): A Pipe composed of 8 differential pairs. Example: 4x Serial RapidIO, x4 PCIe, and 10GBASE-KX4 interfaces.Double Fat Pipe (DFP): A Pipe composed of 16 differential pairs. Example: x8 PCIe interface.Triple Fat Pipe (TFP): A Pipe composed of 24 differential pairs. Example: 12x InfiniBand interface.Quad Fat Pipe (QFP): A Pipe composed of 32 differential pairs. Example: x16 PCIe interface.Octal Fat Pipe (OFP): A Pipe composed of 64 differential pairs. Example: x32 PCIe interface.


18

Modules ProfilesProfile Name

Data Plane 4 FP Expansion Plane P2/J2

Control Plane 2 TP

User Defined

DP01 to DP04 CPtp01 to CPtp02

P3/J3, P5/J5

MOD6-PAY-4F1Q2T- 12.2.1-1-cc

sRIO 2.2 at 3.125 Gbaud

per Section 5.2

sRIO 2.1 at 3.125Gbaud per

Section 5.2



• Module Profiles specify a particular Slot Profile and the protocols that go on groups of pins– The section number and sequence number at the

end of the name make sure it is unique– Module Profile sections, in ANSI/VITA 65, use the

sequence number, to specify a particular combination of protocols out of the multiple options


19

Example Set of 6U Module ProfilesProfile Name

Data Plane 4 FPExpansion Plane P2/J2 Control Plane 2

TPUser

DefinedDP01 to DP04 CPtp01 to

CPtp02P3/J3, P5/J5
















MOD6-PAY-4F1Q2T-12.2.1-4 to 6-cc

sRIO 2.2 at 3.125/5/6.25 Gbaud per Section 5.2

User Defined – DIFF Pins SpaceWire per Section 5.2.1


MOD6-PAY-4F1Q2T-12.2.1-7 to 9-cc

sRIO 2.2 at 3.125/5/6.25 Gbaud per Section 5.2

User Defined – SE Pins SpaceWire per Section 5.2.1


MOD6-PAY-4F1Q2T-12.2.1-1n-cc

sRIO 2.2 per Section 5.2 defined by “n” above defined by “n” above


User Defined J3=SE pins J5=DIFF pins




User Defined J3=DIFF pins J5=SE pins




User Defined SE pins


20

Slot Profiles

• Slot Profiles Define Pin Assignments for Both Plug-In Modules and Backplanes, independent of protocol

– With 6U P0 thru P6 are Plug-In Module connectors– J0 thru J6 are backplane connectors

• With most SpaceVPX Profiles P1/J1 thru P6/J6 are mostly differential pairs

– 32 differential pairs / connector – 16 lanes– 8 single-ended pins / connector– 6 connectors give a total of 192 pairs and 48 single-ended

SpaceVPX 6U Slot Profile: SLT6-PAY-4F1Q2T-10.2.1

Single-Ended pins

Differential pins


21

Mapping Interfaces to SpaceVPX Slot Profiles

Data Plane4 FP

DiffP1/J1

Control Plane16 TP

Utility Plane Expansion

Utility Plane

Utility Plane

SE

DiffP5/J5

SE

SE

SE

SEP0/J0

Key

Key

SE

DiffP2/J2

DiffP3/J3

DiffP4/J4

DiffP1/J1

User Defined

User Defined

User Defined

User Defined

Key8 Pairs

16 PairsTo SpaceUM

SE

DiffP6/J6

Serial RapidIO (sRIO) is used for the data plane

x1 interface = 1 Ultra thin pipe (UTP)

x2 interface = 1 Thin Pipe (TP)x4 interface = 1 Fat Pipe (FP)

Utility plane provides power, configuration,

timing and management input signals using I2C, CMOS and LVDS levels

Expansion Plane for additional Data FPs,

Heritage I/Fs orUser Defined Signals

SpaceWire is used for the control plane

1 interface = 1 Thin Pipe (TP)

Signals to and from the SpaceUM

Expansion Plane for additional Data FPs,

Heritage I/Fs orUser Defined Signals


22

SpaceVPX 6U Slot FamiliesPayload Family:

Payload, Controller, Peripheral, Control SwitchSwitch Family:

Data Switch, Switch & Controller, Control Switch

Pinouts are consistent throughout slot profile families enabling single design providing multiple slot types


23

6U Slot Profiles

Payload Payload Peripheral Peripheral Switch and Controller

Data and Control Switch Data Switch Controller Controller


24

3U Slot Profiles

Payload Payload Peripheral Switch or Mesh Slot

Switch and Controller Controller Controller


25

6U Connector Guidelines

All: J0 & J1 Row G: Utility Plane Data Switch:

– J1AB: Up to 4 TP Control– J2, J3, J4, J5, J6, J1CD: Up to 22 FP Data

Integrated Switches: Data, Management and Control:– J1, J2: up to 16 TP Control– J4, J3, J5, J2: up to 16 FP Data– J6: up to 4 SpaceUM Utility Plane Feeds

Payloads:– J1, J3, J6: Up to 12 Data FP– J2: Expansion - Daisy Chained Up to 32 Pairs of Heritage or Data– J4D: Control 2 TP– J5: Expansion – Heritage (PCI 32 bit)– J6, J5: Optical or RF

Controllers (Payload Compatible)– J1: Up to 4 Data FP– J2: Expansion - Daisy Chained Up to 32 Pairs of Heritage or Data– J4, J3: Up to 16 TP Control– J5: Expansion – Heritage (PCI 32 bit)– J6: up to 4 SpaceUM Utility Plane Feeds

Non-assigned pins may be user definedDistribution Statement A: Approved for Public Release

26

Payload Slot Profile (switched)

Data-In Module

Processing Module

Data-In Module

Storage Module

Processing Module

Data-In Module

Data-Out Module

Util

ize U

ser D

efine

d Pi

ns a

nd To

p of

Car

d Co

nnec

tors

for

Addi

tiona

l Cap

abili

tyPossibility I

Possibility II

Possibility III

Data-Out Module

Any Combination of Payload Functions is Possible


27

Payload Slot Profile (mesh)

Data-In Module

Processing Module

Data-In Module

Storage Module

Processing Module

Data-In Module

Data-Out Module

Util

ize U

ser D

efine

d Pi

ns a

nd To

p of

Car

d Co

nnec

tors

for

Addi

tiona

l Cap

abili

tyPossibility I

Possibility II

Possibility III

Data-Out Module

Any Combination of Payload Functions is Possible


28

SpaceVPX System Controller

SystemController

A

SystemController

B

SpaceWire

Rou

ter

Rou

ter

SpaceWire Ato all Modules

SpaceWire Bto all Modules

SpaceUMA

SpaceUMB

SMI & Clocks

SMI & Clocks

Power

Power

SMI & ClocksTo 1-8 Modules

SMI & ClocksTo 1-8 Modules

Power A and B

Power A and B

Power & Sys Controller Selects(fault tolerant)

SpaceWire to other boxes

SpaceWire to other boxes

Optional data plane connections

Optional data plane connections

• Key element of SpaceVPX fault tolerance• Power channeled to System Controller which then directs powering of other modules• Uses System Management Interface (SMI) for chassis management then SpaceWire for Control Plane operations• SpaceWire router defined with System Controller may be separated with cross-strapping

SpaceWire may be used as C&DH or medium speed data path within SpaceVPX box


29

Controller Slot (with Data Plane Connection)

Data-In Module

Processing Module

Data-In Module

or

Controller Module

Controller Module

Control Switch Module

Control Switch ModulePossibility I

Possibility II

Util

ize U

ser D

efine

d Pi

ns a

nd To

p of

Car

d Co

nnec

tors

for

Addi

tiona

l Cap

abili

tyAny Combination of Payloads with Controller

or Control Switch is Possible


30

Controller Slot (without Data Plane Connection)

Controller Module

Controller Module

or



Processing Module

Storage Module

Processing Module

Possibility I

Possibility II

Util

ize U

ser D

efine

d Pi

ns a

nd To

p of

Car

d Co

nnec

tors

for

Addi

tiona

l Cap

abili

tyAny Combination of Payloads with Controller



31

Data Switch and Controller Slot Profile

Controller Module

Data Switch Module

Controller Module

Data Switch Module

or



Data Switch Module

or

Possibility I

Possibility II

Possibility III

Util

ize U

ser D

efine

d Pi

ns a

nd To

p of

Car

d Co

nnec

tors

for

Addi

tiona

l Cap

abili

tyAny Combination of Data Switch with Controller



32

Outline




33

Data Plane Switch Topology


34

Data Plane in SpaceVPX

• High-throughput, predictable data movement without interfering with other traffic• Examples: Serial RapidIO or PCI Express

VPX3

VPX4

VPX5

VPX6

VPX11

VPX12

VPX13

VPX7

VPX10

ExpanPlane

ExpanPlane

ExpanPlane

ExpanPlane

DataPlane

DataPlane

DataPlane

DataPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ExpanPlane

ExpanPlane

ExpanPlane

DataPlane

DataPlane

DataPlane

ContrlSwitch

ContrlSwitch

TP

Power A and B

Switched Utility Plane (includes system management, reference clocks, reset and power)

Control Plane(TP)

Data Plane(FP)

ExpansionPlane(DFP)


Payloadslots

Payloadslots

VPX14

ContrlPlane

ExpanPlane

DataPlane

UM8-9

Controller SelectionA and B

VPX2

ExpanPlane

DataPlane

IPMC

DataSwitch

DataSwitch

IPMC IPMC IPMC IPMC IPMC IPMCIPMC IPMC

ContrlPlane

VPX1

ExpanPlane

DataPlane

ContrlPlane

IPMC

VPX15

ContrlPlane

ExpanPlane

DataPlane

VPX16

ContrlPlane

ExpanPlane

DataPlane

IPMC IPMC

TP

ChMC ChMC

SW

Switc

h &

Cont

rolle

r

Switc

h &

Cont

rolle

r

Spac

eUM

Slot

s


35

Data Plane Mesh Topology


36

Expansion Plane in SpaceVPX

• Tightly coupled groups of boards and I/O• Heritage Interfaces (PCI)

VPX3

VPX4

VPX5

VPX6

VPX11

VPX12

VPX13

VPX7

VPX10

ExpanPlane

ExpanPlane

ExpanPlane

ExpanPlane

DataPlane

DataPlane

DataPlane

DataPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ExpanPlane

ExpanPlane

ExpanPlane

DataPlane

DataPlane

DataPlane

ContrlSwitch

ContrlSwitch

TP

Power A and B


Control Plane(TP)

Data Plane(FP)

ExpansionPlane(DFP)


Payloadslots

Payloadslots

VPX14

ContrlPlane

ExpanPlane

DataPlane

UM8-9


VPX2

ExpanPlane

DataPlane

IPMC

DataSwitch

DataSwitch


ContrlPlane

VPX1

ExpanPlane

DataPlane

ContrlPlane

IPMC

VPX15

ContrlPlane

ExpanPlane

DataPlane

VPX16

ContrlPlane

ExpanPlane

DataPlane

IPMC IPMC

TP

ChMC ChMC

SW

Switc

h &

Cont

rolle

r

Switc

h &

Cont

rolle

r

Spac

eUM

Slot

s


37

Control Plane Switch Topology


38

Control Plane in SpaceVPX

• Reliable, packet-based communication for application control, exploitation data• Typically Gigabit Ethernet for Commercial and SpaceWire for Space Applications

VPX3

VPX4

VPX5

VPX6

VPX11

VPX12

VPX13

VPX7

VPX10

ExpanPlane

ExpanPlane

ExpanPlane

ExpanPlane

DataPlane

DataPlane

DataPlane

DataPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ExpanPlane

ExpanPlane

ExpanPlane

DataPlane

DataPlane

DataPlane

ContrlSwitch

ContrlSwitch

TP

Power A and B


Control Plane(TP)

Data Plane(FP)

ExpansionPlane(DFP)


Payloadslots

Payloadslots

VPX14

ContrlPlane

ExpanPlane

DataPlane

UM8-9


VPX2

ExpanPlane

DataPlane

IPMC

DataSwitch

DataSwitch


ContrlPlane

VPX1

ExpanPlane

DataPlane

ContrlPlane

IPMC

VPX15

ContrlPlane

ExpanPlane

DataPlane

VPX16

ContrlPlane

ExpanPlane

DataPlane

IPMC IPMC

TP

ChMC ChMC

SW

Switc

h &

Cont

rolle

r

Switc

h &

Cont

rolle

r

Spac

eUM

Slot

s


39

Utility System Management in SpaceVPX

• Low-power• Defined by VITA 46.0 and 46.11

• Prognosticates/diagnoses problems

• Can control module power

VPX3

VPX4

VPX5

VPX6

VPX11

VPX12

VPX13

VPX7

VPX10

ExpanPlane

ExpanPlane

ExpanPlane

ExpanPlane

DataPlane

DataPlane

DataPlane

DataPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ExpanPlane

ExpanPlane

ExpanPlane

DataPlane

DataPlane

DataPlane

ContrlSwitch

ContrlSwitch

TP

Power A and B


Control Plane(TP)

Data Plane(FP)

ExpansionPlane(DFP)


Payloadslots

Payloadslots

VPX14

ContrlPlane

ExpanPlane

DataPlane

UM8-9


VPX2

ExpanPlane

DataPlane

IPMC

DataSwitch

DataSwitch


ContrlPlane

VPX1

ExpanPlane

DataPlane

ContrlPlane

IPMC

VPX15

ContrlPlane

ExpanPlane

DataPlane

VPX16

ContrlPlane

ExpanPlane

DataPlane

IPMC IPMC

TP

ChMC ChMC

SW

Switc

h &

Cont

rolle

r

Switc

h &

Cont

rolle

r

Spac

eUM

Slot

s


40

Utility Clocks, Reset and Power in SpaceVPX

• Power pins and various utility signals• Utility plane provides power, configuration, timing and

management input signals using I2C, CMOS and LVDS levels

VPX3

VPX4

VPX5

VPX6

VPX11

VPX12

VPX13

VPX7

VPX10

ExpanPlane

ExpanPlane

ExpanPlane

ExpanPlane

DataPlane

DataPlane

DataPlane

DataPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ContrlPlane

ExpanPlane

ExpanPlane

ExpanPlane

DataPlane

DataPlane

DataPlane

ContrlSwitch

ContrlSwitch

TP

Power A and B


Control Plane(TP)

Data Plane(FP)

ExpansionPlane(DFP)


Payloadslots

Payloadslots

VPX14

ContrlPlane

ExpanPlane

DataPlane

UM8-9


VPX2

ExpanPlane

DataPlane

IPMC

DataSwitch

DataSwitch


ContrlPlane

VPX1

ExpanPlane

DataPlane

ContrlPlane

IPMC

VPX15

ContrlPlane

ExpanPlane

DataPlane

VPX16

ContrlPlane

ExpanPlane

DataPlane

IPMC IPMC

TP

ChMC ChMC

SW

Switc

h &

Cont

rolle

r

Switc

h &

Cont

rolle

r

Spac

eUM

Slot

s


41

Example of 6U SpaceVPX Backplane Profile

Profile name

Mechanical Slot Profiles and Section Channel Gbaud Rate

Pitch (in)

RTMConn

Payload

Switch & Controller

Control Plane

Data Plane

Exp. Plane

BKP6-CEN9- 11.2.5-1

1.2

[VITA 46.10]

SLT6-PAY-

4F1Q2T-10.2.1

SLT6- SWC- 12F16T-

10.4.1

0.4

3.125

3.125

BKP6-CEN9- 11.2.5-2

1.2

[VITA 46.10]

SLT6-PAY-

4F1Q2T-10.2.1

SLT6- SWC- 12F16T-

10.4.1

0.4

5.0

5.0

BKP6-CEN9- 11.2.5-3

1.2

[VITA 46.10]

SLT6-PAY-

4F1Q2T-10.2.1

SLT6- SWC- 12F16T-

10.4.1

0.4

6.25

6.25


42

Outline




43

SpaceVPX Concept Development

• Three concepts developed• Concept 1 – Redefine an existing OpenVPX connector block as a second

Utility/Management plane block (similar to P0/P1)• Incompatible with existing OpenVPX modules

• Concept 2 – Extend the existing Open VPX connector by adding a second Utility/Management plane block (P7/P8 similar to P0/P1)

• Extends module height from 6U to 6U+TBD• Partially compatible with existing OpenVPX modules

• Concept 3 – Add one or more Space Utility/Management (SpaceUM) modules with independent support for each OpenVPX module

• The SpaceUM module receives redundant Utility and Management Plane signals through the backplane and selects one set to be forwarded to the OpenVPX module Utility/Management plane signals

• Allows use of existing OpenVPX modules in appropriate flight applications


44

SpaceVPX Redundancy

• Each of the interconnect planes defined by OpenVPX are supported by SpaceVPX as fully cross-strapped single-fault tolerant capable• Control, Data and Expansion plane redundancy is provided

using the existing OpenVPX connectivity• Ability to utilize M-of-N payload module redundancy to support either higher

reliability or degraded modes of operation• The SpaceVPX Utility and Management plane redundancy is

a major departure from OpenVPX• OpenVPX uses single-source, bused power distribution• OpenVPX uses single-source, bused clock, reset and management

distribution• Each interconnect plane can be implemented with reduced

fault tolerance when desired


45

SpaceVPX Fault Tolerance

GoalSpaceVPX is to achieve an acceptable level of fault tolerance, while maintaining reasonable compatibility with OpenVPX components, including connector pin assignments. For the purposes of fault tolerance, a module is considered the minimum redundancy element. The Utility Plane, Management Plane, and Control Plane are all distributed redundantly and in star topologies to provide fault tolerance.

For Space applications, the major fault tolerance requirements are listed below:

Dual-redundant power distribution (bussed) (Section 3.2.1) where each distribution is supplied from an independent power source. Dual-redundant management distribution (point-to-point cross-strapped) where each distribution is supplied from an independent management controller to a SpaceUM module that selects between the A and B management controllers for distribution to each of the slots controlled by the SpaceUM module.Card-level serial management (Section 3.4.3)Card-level reset controlCard-level power controlTiming/synchronization/clocks, Matched length, low-skew differential (Section 3.4.2)Fault tolerant Utility Plane selection (bussed) (Section 3.3)Dual-redundant Data planes (point-to-point cross-strapped)Dual-Redundant Control planes (point-to-point cross-strapped) (Section 3.2.3)VITA 78 infrastructure allows for fully managed FRUs and for dumb FRUs


46

Space Utility Management

• Architecture• Provides single-fault-tolerance with limited increase in SWaP

• One SpaceUM module supports eight VPX slots• Scalable to very large units

• Maximum of 31 VPX slots and 4 SpaceUM slots• Dual-redundant power distribution

• Allows traditional space methods• Dual-redundant management distribution

• Traditional capability using improved methods• Accommodates supplier-preferred methods for implementing

interoperable products• Topology

• Traditional tree-topology is familiar to space suppliers• Flexible command/status interface options allow tailoring to customer

needs


47

System Management

• Leverages the VITA 46.11 industry standard• Limited subset to minimize complexity

• Defines an alternative light-weight protocol for less complex systems

• Basic functions supported• Individual module power on-off control• Individual module reset control• Individual module status monitoring

• Advanced capabilities• Module-level telemetry acquisition

• Voltage, temperature, digital state, etc.• Module-level functional control

• Sub-function power control, register access, memory access, etc.


48

System Controller/Utility Plane


49

SpaceVPX Management Distribution Topology

System Controller A

VPX Slot(ChMC)

Select (discret

e)

Sele

ct

Circ

uit

VPX

Slot

(I

PMC)

Sele

ct

Circ

uit

VPX

Slot

(I

PMC)

Sele

ct

Circ

uit

VPX

Slot

(I

PMC)

Sele

ct

Circ

uit

VPX

Slot

(I

PMC)

Sele

ct

Circ

uit

VPX

Slot

(I

PMC)

Management Select

System Controller B

VPX Slot(ChMC)

Man

agem

ent

Fano

ut B

(IP

MC)

Man

agem

ent

Fano

ut A

(IP

MC)

Sele

ct

Circ

uit

VPX

Slot

(I

PMC)

Sele

ct

Circ

uit

VPX

Slot

(I

PMC)

Sele

ct

Circ

uit

Sele

ct

Circ

uit

SYS_RSTSystemManagement

SYS_RSTSystemManagement

Controller Select


50

Power/Utility Plane


51

SpaceVPX Power Distribution Topology

Power Supply

Power Supply

System Controller A VPX Slot

(ChMC)

Select (discre

te)

Sele

ct

Circ

uit

VPX

Slot

Sele

ct

Circ

uit

VPX

Slot

Sele

ct

Circ

uit

VPX

Slot

Sele

ct

Circ

uit

VPX

Slot

Sele

ct

Circ

uit

VPX

Slot

Power A

Power B

Power Select

Utility Select

System Controller B VPX Slot

(ChMC)

Sele

ct

Circ

uit

Sele

ct

Circ

uit

VPX

Slot

VPX

Slot

Sele

ct

Circ

uit

Sele

ct

Circ

uit


52

SpaceVPX 6U Power Profiles

Key 1 Key 2 Key 3 Module Type

Power Feeds (SpaceUM and PSC Only)

Both: PF1-PF8,SpaceUM: PF17


SpaceUM: PF19

SpaceUM: PF20

Power Profile

270 270 Open Switch (3U

Power)

-- -- -- --

270 315 Open Payload (3U

Power)

-- -- -- --

315 270 Open Switch(6U Std Power)

-- -- -- --

315 315 Open Payload (6U Std Power)

-- -- -- --

90 0 0 SpaceUM 12 12 12 -12 12V90 0 45 SpaceUM 12 12 3.3 -12 12V_3.3V90 0 90 SpaceUM 12 12 5 -12 12V_5V90 0 270 SpaceUM 12 5 3.3 -12 12V_5V_3.3V90 45 0 SpaceUM 5 5 12 -12 5V_12V90 45 45 SpaceUM 5 5 3.3 -12 5V_3.3V90 45 90 SpaceUM 5 5 5 -12 5V90 45 270 SpaceUM 5 3.3 12 -12 5V_3.3V_12V90 90 0 SpaceUM 3.3 3.3 12 -12 3.3V_12V90 90 45 SpaceUM 3.3 3.3 3.3 -12 3.3V90 90 90 SpaceUM 3.3 3.3 5 -12 3.3V_5V90 90 270 SpaceUM 3.3 12 5 -12 3.3V_12V_5V90 270 0 SpaceUM 12 12 12 12 12V_max90 270 45 SpaceUM 3.3 3.3 3.3 3.3 3.3V_max90 270 90 SpaceUM 5 5 5 5 5V_max


53

SpaceVPX 6U Power Profiles

Key 1 Key 2 Key 3 Module Type

Power Feeds (SpaceUM and PSC Only)



SpaceUM: PF19

SpaceUM: PF20

Power Profile

90 270 270 SpaceUM NA NA NA NA 90 315 270 SpaceUM Intermediate

PowerIntermediate

PowerIntermediate

PowerIntermediate

Power0-18VDC

90 315 315 SpaceUM Intermediate Power

Intermediate Power

Intermediate Power

Intermediate Power

18VDC-36VDC

0 0 0 PSC 18-36V Input 12 12 N/A N/A 12V0 0 45 PSC 18-36V Input 12 12 N/A N/A 12V_n3.3V0 0 90 PSC 18-36V Input 12 12 N/A N/A 12V_n5V0 0 270 PSC 18-36V Input 12 5 N/A N/A 12V_5V_n3.3V0 45 0 PSC 18-36V Input 5 5 N/A N/A 5V_n12V0 45 45 PSC 18-36V Input 5 5 N/A N/A 5V_n3.3V0 45 90 PSC 18-36V Input 5 5 N/A N/A 5V0 45 270 PSC 18-36V Input 5 3.3 N/A N/A 5V_3.3V_n12V0 90 0 PSC 18-36V Input 3.3 3.3 N/A N/A 3.3V_n12V0 90 45 PSC 18-36V Input 3.3 3.3 N/A N/A 3.3V


54

Outline




55

Mechanical

• General Form Factor – VITA 46• Conduction Cooled Modules – VITA 48.2

• Updated figures• Screw and tab modules with addition of threaded holes• Separate extraction tool for non-levered modules

• Pitch – 0.8”, 1.0”, 1.2” (default)• Multiple pitch cards may be used

• 160 mm standard length• 220, 280 and 340 mm allowed

• Accommodates larger wedgelock • Connections to PWB ground allowed • Connector – VITA 46, VITA 60 or VITA 63 may be used

Strongly leverages existing OpenVPX mechanical

infrastructure and standards


56

6U SpaceUM Connector

• Currently two vendors are designing and building SpaceUM connectors

• TE Connectivity• Smith Connectors

• Each SpaceUM connects to a maximum number of 8 slots.


57

6U and 3U Form Factor Plug-In Unit Dimensions

OpenVPX SpaceVPX


58

VXS P0 Connector

P0 connector supports channels for serial fabrics


59

VPX Connector

• Same type of connector as used for P0 of VXS• Used along entire edge of board instead of just a single

connector

VPX Connector for 6U Module


60

VPX Cooling Options

• OpenVPX references VITA 48 specifications for mechanical and cooling– ANSI/VITA 48.0 Mechanical Specification for Microcomputers Using Ruggedized Enhanced

Design Implementation (REDI) – Base specification

• Options where cooling air normally comes in contact with electronic components– ANSI/VITA 48.1 Air cooled – widely used

• Can handle up to around 200 W per 6U module• Module pitch of .80, 0.85, and 1.00 inches allowed; 1.00 inches is the most common

• Options where cooling air normally has no contact with electronic components– ANSI/VITA 48.2 Conduction Cooled – widely used

• Limited to around 150 W per 6U module, with air-cooled chassis side walls (higher with liquid cooled walls)• Module pitch of .80, 0.85, and 1.00 inches allowed; 1.00 inches is the most common

– ANSI/VITA 48.5 Air Flow Through (AFT)• Can handle up to around 200 W per 6U module• Module pitch of up to 1.52 inches allowed; looks like 1.2 inches is becoming a common pitch

– ANSI/VITA 48.7 air flow-by • Can handle up to around 200 W per 6U module• Module pitch of .85, 1.00, 1.10, and 1.20 inches allowed; expect 1.0 to be the most common

– VITA 48.4 Liquid Flow Through (LFT) – draft not yet available• Expected to handle up to 300 to 400 W per 6U module


61

ANSI/VITA 48.2 Conduction Cooling

• Limited to around 150 W per 6U x 160 mmmodule, with air-cooled side walls– This is not enough for some modules– With liquid cooled chassis sidewalls

can handle more

• Proven rugged approach with long heritage– Newer approaches tend to handle higher power

levels or give lower junction temperature at thesame power level• Lower junction temperatures tend to increase the MTBF

(Mean Time Between Failure)

• Suppliers tend to spec the temperature at themodule’s edge (in according with ANSI/VITA 47)– Be aware there will be a drop between the card and the

chassis side wall – this can be a performance limiter• The temperature drop from module edge to chassis rail is a significant part of the

budget, e.g. 55ºC air at 10,000 ft. to a card edge of 85ºC max = 30ºC budget

Primary Cover

PWB

Diagrams from Mercury Systems presentation given at Sept 2012 VITA Standards meeting


62

VITA Connector Options

• 3 VITA standard connectors as candidates (TE Connectivity, Amphenol, and Smith Connectors).

• A fourth candidate is under development (IEH Corp.); however, the product is nascent.

• The SpaceVPX (VITA 78) did not make a connector recommendation.• Insufficient information largely the reason for a “No Go” on a recommendation.• For additional info see VPX connector reports

– Available at: http://www.vita.com/VPX_Reports


http://www.vita.com/VPX_Reports

63

Plug-in Module Vibration Response

• In addition micro-motion of Plug-In module being a potential cause of connector fretting wear/corrosion, backplane micro-motion can also be an issue.

1st Mode Shape

Daughtercard connectorDaughtercard PWB (no vibration)

Backplane PWB

Backplane connector

Direction of applied vibration (Z-axis of daughtercard)

Direction of applied vibration (Z-axis of daughtercard)

Possible fretting wear/corrosion of contacts due to micromotion

Most of the slide content is from a Curtiss-Wright presentation given at Nov 2012 VITA Standards meeting


64

Fretting Corrosion with Original RT2 Connector Resulting From Torturous Vibration Testing

• Fretting corrosion is contact wear due to motion of backplane with respect to Plug-In Module

• Fretting can be an issue for systems operating in high vibration environments

• Fretting can be exacerbated by a poor design and/or poor fabrication

• Pictures show wafers from RT2 connectors, Plug-In Module side, subjected to torturous vibration testing

• Mercury and TE have developed the RT2-R connector to reduce the susceptibility to vibration

• RT2 contacts wore through Gold, Nickel, & Copper pads on wafer (Plug-In Module side)

• Believe two rows of holes as opposed to one because board was unplugged and plugged part way through testing (and did not seat in exactly the same place) or board moved during testing.

Pictures from Mercury Systems presentation given at Sept 2012 VITA Standards meeting and courtesy of TE Connectivity

Connector wafer


65

RT2-R Enhanced Contact Design (Backplane Side)

• RT2-R is more rugged than RT2– Changes made to both

backplane and Plug-In Module sides

– Backplane side pins changed from 2 points of contact to 4

• RT2 and RT2-R inter-mate and PWB footprints are the same

MULTIGIG RT2

2 Contact Points

MULTIGIG RT2-R

4 Contact Points

Pictures courtesy of TE ConnectivityDistribution Statement A: Approved for Public Release

66

RT2-R Enhancement Extended Pads (Plug-In Module Side)

Plug-In Module wafer

Ground pad

RT 2 RT 2-R (Extended pads)

• RT 2 and RT 2-R VPX Plug-In Module wafersare plated with .000050” min gold over nickel.– Note: TE Connectivity uses the term “Daughter card”

to refer to what VITA 65 refers to as a “Plug-In Module”

• RT 2-R signal pads extended 1.20mm to maintainat least 2 mm contact wipe with all 4 contact points.

• RT 2 Plug-In Module connectors can be used with RT 2-R backplane connectors and maintain 4 point redundancy if connectors are within 0.5 mm of being fully mated in application.

Pictures courtesy of TE Connectivity

22.31 mm (0.878”)


67

Minimizing Fretting Requires Attention to More Than Just Connectors

• Movement of Plug-In Module with respectto backplane must be minimized– Consider stiffness of backplane – backplane

bowing can be an issue– Pay close attention to all mechanical aspects

of Plug-In module, backplane and chassis that canaffect motion of Plug-In Module connectors withrespect to backplane connectors

• TE has “Ruggedized” guide hardware –machined hardware asopposed to die cast– Stainless steel guide pin– Aluminum (6061) guide socket (9.0 mm wide, 0.354”)

• Ni plated• With optional ESD contact

Guide Module Assembly Shown w/ optional ESD

contact (2000713-X)Pictures courtesy of TE Connectivity


OpenVPX Tutorial-6820 Jan. 2016

DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.

Minimizing Fretting Requires Attention to More Than Just Connectors

• Movement of Plug-In Module with respectto backplane must be minimized– Consider stiffness of backplane – backplane

bowing can be an issue– Pay close attention to all mechanical aspects

of Plug-In module, backplane and chassis that canaffect motion of Plug-In Module connectors withrespect to backplane connectors

• TE has “Ruggedized” guide hardware –machined hardware asopposed to die cast– Stainless steel guide pin– Aluminum (6061) guide socket (9.0 mm wide, 0.354”)

• Ni plated• With optional ESD contact Guide Module Assembly

Shown w/ optional ESD contact (2000713-X)Pictures courtesy of TE Connectivity

Links: VXS P0, Pin Numbering, RTM, Slot Profiles, Connector, Contacts, RT2-R Wafer

69

Outline




70Distribution A. Approved for public release: distribution unlimited

Questions?

Documents

SpaceVPX Tutorial 06282016