Dolphin PXH820 User manual

PXH820 User’s Guide – Dolphin Interconnect Solutions Page 1
Dolphin PCI Express PXH820 XMC Adapter
PXH820 NTB Adapter Users Guide
Version 1.1
Date: 1st November 2019

PXH820 User’s Guide – Dolphin Interconnect Solutions Page 2

PXH820 User’s Guide – Dolphin Interconnect Solutions Page 3
Table of Contents
DISCLAIMER................................................................................................................................................................ 4
TERMS AND ACRONYMS............................................................................................................................................. 4
PXH820 HIGH LEVEL SPECIFICATION ........................................................................................................................... 5
SPECIFICATIONS ...................................................................................................................................................................5
PACKAGING ................................................................................................................................................................ 6
PRE-INSTALLATION QUESTIONS.................................................................................................................................. 6
PCIE SLOT DETERMINATION...................................................................................................................................................6
PXH820 NTB CONFIGURATION .............................................................................................................................................6
OPERATING ENVIRONMENT....................................................................................................................................................6
CABLE PORTS AND CONNECTIONS............................................................................................................................................7
Cable ports................................................................................................................................................................... 7
Active Optical Cables (AOC) ......................................................................................................................................... 7
REAR-IO........................................................................................................................................................................ 7
INSTALLATION ............................................................................................................................................................ 8
STEP 1-UNPACK BOARD .......................................................................................................................................................8
STEP 2-CONFIGURE THE BOARD FOR PROPER OPERATION ..........................................................................................................8
STEP 3-INSTALL THE ADAPTER CARD....................................................................................................................................... 8
STEP 4-INSTALLING AND REMOVING CABLES............................................................................................................................8
Connecting Cables ....................................................................................................................................................... 9
Disconnecting Cables................................................................................................................................................... 9
STEP 5–INSTALLING THE DOLPHIN EXPRESSWARE SOFTWARE .....................................................................................................9
STEP 6-VERIFY INSTALLATION &LEDS....................................................................................................................................9
OPERATION AND MAINTENANCE ..............................................................................................................................10
CONFIGURATION AND DIP SWITCHES.....................................................................................................................................10
DIP Switch Bank –Configuration ............................................................................................................................... 10
USE CASE A-2NODE CONFIGURATION –NTB MODE..............................................................................................................11
Connecting the cables for 2 Node Configurations, x16 link ....................................................................................... 11
Connecting the cables for 2 Node Configurations, x8 link ......................................................................................... 11
Connecting the cables for 2 Node Configurations, x4 link ......................................................................................... 11
USE CASE B-3NODE CONFIGURATION –NTB MODE..............................................................................................................12
Connecting the cables for 3 Node Configurations, x8 link ......................................................................................... 12
USE CASE C-MULTI NODE WITH MXS824 SWITCH –NTB MODE..............................................................................................12
FIRMWARE UPGRADE..........................................................................................................................................................13
IDENTIFYING THE CARD........................................................................................................................................................ 13
TECHNICAL INFORMATION ........................................................................................................................................14
PCIE CABLE SIGNALS ..........................................................................................................................................................14
EXTERNAL PCIE X4CABLE CONNECTOR PIN-OUT .....................................................................................................................14
COMPLIANCE AND REGULATORY TESTING.................................................................................................................15
LIMITED WARRANTY..................................................................................................................................................16
WARRANTY PERIOD............................................................................................................................................................16
COVERAGE........................................................................................................................................................................ 16
SERVICE PROCEDURE ..........................................................................................................................................................16
PRODUCT REVISION HISTORY ....................................................................................................................................17

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BMC FIRMWARE VERSIONS .................................................................................................................................................17
EEPROM VERSIONS ..........................................................................................................................................................17
SUPPORT..........................................................................................................................................................................17
DISCLAIMER
DOLPHIN INTERCONNECT SOLUTIONS RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY OF ITS
PRODUCTS TO IMPROVE RELIABILITY, FUNCTION, OR DESIGN.
TO THE FULLEST EXTENT PERMITTED BY LAW, DOLPHIN WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL OR
CONSEQUENTIAL DAMAGES (INCLUDING LOST PROFITS, LOST DATA, OR LOSS OF USE) ARISING OUT OF ANY USE OF DOLPHIN’S
PRODUCTS, SOFTWARE OR SERVICE PROVIDED. DOLPHIN’S MAXIMUM LIABILITY WILL NOT EXCEED THE TOTAL AMOUNT PAID FOR
THE PRODUCT BY THE PURCHASER.
Do not use information in this guide to design your own card, always reference the original PCI-SIG or VITA Specification for details.
LIFE SUPPORT POLICY
DOLPHIN INTERCONNECT SOLUTIONS’ PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES.
ENVIRONMENTAL POLICY
Dolphin is minimizing the amount of printed documentation and software CDs in its shipments; please download additional
documentation and software from www.dolphinics.com.
Terms and Acronyms
Important terms and acronyms used in this manual
AOC Active Optical Cable. PCIe fiber cable assembly with SFF-8644 connector. Available from Dolphin, orderable part
number MSFCxxxM (where xxx is the length in meters).
CMI Cable Management Interface. The 2-wire management interface for communication between subsystems
connected by a PCIe 3.0 cable. Details can be found in the PCI-SIG External Cabling Specification 3.0. The CMI
functionality is optional with the PXH820 card.
BMC Microcontroller on the PXH820 used to manage card functionality and CMI communications.
eXpressWare Dolphins software stack for PCIe clustering and IO. www.dolphinics.com for more information.
Lane One PCI Express Lane contains a differential pair for transmission and a differential pair for reception.
Link A collection of one or more PCI Express Lanes providing the communication path between an Upstream and
Downstream Port.
MiniSAS-HD Standard MiniSAS-HD cable with SFF-8644 connectors.
PCIe 3.0 cable PCIe 3.0 cable with SFF-8644 connectors. Complaint to the new PCI-SIG External Cabling Specification 3.0.
Support for CMI.
Port The PXH820 has four x4 ports, named P1, P2, P3, P4. The physical ports are identified by text on the PCIe
brackets. The PCIe switch chip only supports 2 concurrent NTB connections.

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PXH820 High Level Specification
The PXH820 is a PCI Express Gen3 x8 NTB XMC adapter card available from Dolphin providing an easy-to-use, multi-functional PCI
Express networking solution.
The PXH820 supports PCIe Gen1, Gen2 and Gen3 speeds and x1, x2, x4, x8 and x16 link-widths both at the XMC connector side and
cable link side. The card will operate at the highest common speed shared between the XMC Carrier card and the PXH820 (up to
Gen3) and the widest common link-width (up to x16 using both P15 and P16 XMC connectors). The PXH820 is link compliant to the
PXH830 card. These two products can be mixed in any supported combination to create a PCIe fabric consisting of standard servers
with a standard PCIe slot and embedded systems supporting the XMC form factor. Scale out solutions can be implemented using
the 24 port MXS824 PCIe switch.
Specifications
•ANSI/VITA 42.3-2006 (R2014) Single Width Mezzanine Card
•ANSI/VITA 42.0-2016
•PCI Express Base Specification, Rev. 3.0.
•PCI Express CEM Specification, Rev. 3.0.
•PCI Express External Cabling Specification Rev 3.0, version 0.9
•PCI Express Gen3 8.0 GT/s per lane signaling –128 GT/s total signaling.
•XMC 1.0 Connectors
oXMC P15 PCI Express Gen3 x8, x4, x2 or x1 host connection.
oXMC P16 PCI Express Gen3 x8, support x16 Host merged with P15. Can be configured for REAR-
IO.
•Compliant with PCI Express Gen1 through Gen3 computers and IO systems, auto detection.
•The PXH820 supports direct NTB connections to two or three other nodes. Scale out with MXS824 PCIe
switch.
•Quad SFF-8644 cable connector
oDurability max total 250 mating cycles
•Cable port configurations
oOne x16 NTB port
oTwo x8 NTB ports
•Broadcom / Avago / PLX PEX8733 PCI Express Gen3 chipset with DMA.
•132 nanosecond cut-through latency port to port.
•Support for MiniSAS-HD copper cables up to 9 meters (between PXH820 cards, room temperature).
•Support for PCI Express 3.0 copper cables with CMI.
•Support for active optical fibers up to 100 meters.
•Host clock isolation. Automatic support for host running CFC or SSC mode.
•VAUX powered board management controllers for flexible configuration and cable management.
•EEPROM recovery option.
•No PCI Express power domain isolation.
•Supports both 5- and 12-Volt XMC VPWR power supply.
•Power consumption:
o12- or 5-Volt supply: Max 14 Watt, typical 10 Watts without AOC attached.
o+3.3 Volt AUX: Max 1 Watt
•Port power supply (per cable port): 3.3 Volt +/- 5%, 0.6 A
•Operating Temperature: 0°C - 55°C (32°F - 131°F), Air Flow: 150 LFM
•Operating Temperature with AOC: 0°C - 45°C (32°F - 113°F), Air Flow: 150 LFM
•Relative Humidity: 5% - 95% (non- condensing)
•Regulatory compliance
oCE
oRoHS
oFCC Class A.
oWEEE

PXH820 User’s Guide – Dolphin Interconnect Solutions Page 6
Packaging
The PXH820 includes the following components.
•PXH320 Adapter Board.
•Face plate for SFF-8644 connector.
•6 screws for fixing the XMC and face plate.
•Anti-static bag.
•Getting started guide with serial number for quick download of Dolphins eXpressWare PCIe software.
Pre-Installation Questions
Certain steps should be taken prior to installing the PXH820. You should determine the following configuration requirements.
•Which XMC slot and system will the card be installed in?
•What is the speed and link width of the XMC carrier that the card will be installed in?
•What is the operating environment for the Host computer?
•What type and length of cables will be used?
•How to ensure proper operational conditions, temperature and air-flow.
PCIe Slot Determination
The PXH820 supports PCIe Gen1, Gen2 and Gen3 speeds and x1, x2, x4, x8 using XMC connector P15 and x16 link-widths using XMC
connector P15+P16. The slot width and speed will affect the performance of the card. The card will auto configure to the slot
speed and width.
TIP: After installing the eXpressWare software, run the “sisci_benchmarks” benchmark suite to verify the expected performance.
Please contact Dolphin support if you need assistance to reach the expected performance.
PXH820 NTB Configuration
The PXH820 has a DIP switch bank to control the main configuration of the card. The DIP switch labeled SW1 can be found close to
the upper edge of the board. The default DIP switch setting is single link x16 operations. Alternative configuration settings are two
x8 links, or long cable tuning.
Operating Environment
To maximize lifetime for the product and maintain the warranty, please honor the specified operating temperature and make sure
the specified air flow is present.
Operating Temperature: 0°C - 55°C (32°F - 131°F), Air Flow: 150 LFM
Operating Temperature with AOC: 0°C - 45°C (32°F - 113°F), Air Flow: 150 LFM
Relative Humidity: 5% - 95% (non- condensing)
TIP: After installing the Dolphin eXpressWare software, you can use the tool dis_diag to determine the actual board temperatures.

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Cable Ports and Connections
The PXH820 is designed to support both long and short cables and comes with two types of PCIe link tuning
parameters. The default configuration supports cables between 0.5 and 3 meters or fiber cables (AOC). To use
cables longer than 3 meters, please use DIP-Switch DIP4 to enable the long cable tuning.
Cable ports
The PXH820 has a quad SFF-8644 connector. Each port implements 4 PCIe lanes. The ports are
numbered as shown in Figure 1 Front panel below. The black thick line indicates the position of the
PCB.
The PXH820 cable connector is compliant to the SFF-8644 industry specification and supports x4/x8 Mini-SAS
HD cables or x4/x8 PCI Express 3.0 cables (PCIe 3.0 cable) compliant to the PCIe External Cabling Specification
3.0. Four x4 or two x8 cables are needed for full PCIe x16 connectivity. Currently, the PXH820 card does not
benefit from the new PCIe 3.0 cable, a future firmware release may add support for optional, advanced PCIe
networking management if PCIe 3.0 cabes are installed.
Active Optical Cables (AOC)
The PXH820 card is compliant with active fiber optic cables available from Dolphin (Part no: MSFCxxx). No
special configuration is required. Up to 100-meter fiber cable is supported.
REAR-IO
The PXH820 card is designed to support REAR-IO. Please contact Dolphin for more information.
Figure 1 Front
panel face plate

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Installation
Step 1 - Unpack board
The PXH820 card is shipped in an anti-static bag to prevent static electricity damage. The card should only be removed from the
bag after ensuring that anti-static precautions are taken. Static electricity from your clothes or work environment can
damage your PCI Express adapter card or your PC. Always wear a grounded anti-static wrist strap while opening the
PC and when the PXH820 is removed from the anti-static bag.
Unpack the PXH820 from the anti-static bag using proper anti-static procedures.
Step 2 - Configure the Board for Proper Operation
The PXH830 has one bank of 8 DIP switches. Set the DIP switch settings for the required NTB use case. The default factory setting
for the PXH820 is NTB mode, short cable, single (up to x16) link connection.
Configuration
PXH820
DIP switch view
1 x16 port
(Shipping
Default)
2 x8 ports
DIP3 set
Long cable
tuning
DIP4 set
Table 1: PXH820 SW1 configuration settings. DIP3 and DIP4 can be combined.
Step 3 - Install the Adapter Card
Before installing the adapter card, make sure you are properly grounded to avoid static discharges that may destroy your computer
or the adapter card. Ensure you are properly grounded before opening your computer or the anti-static bag
containing the PXH820. Please follow your computer’s or expansion chassis manual on how to install a PCI Express
card.
The PXH820 Adapter card can be installed into any XMC 1.0 compliant carrier card. The PXH820 supports PCI Express
Gen1, Gen2 and Gen3 signaling. NOTE: A Gen3 slot is recommended as it typically doubles the performance compared to
a Gen2 slot. Using the XMC P15 connector, the host link will be up to x8. The PXH820 card supports x16 host connections
using both P15 and P16.
The PXH820 supports hosts using either spread spectrum or constant frequency clocking. The card implements clock isolation.
To install the card:
1. Ensure the PXH820 face plate is removed from the SFF8644 connector block.
2. Carefully slide the connector side of the PXH820 card through the carrier card front panel cut out.
3. Carefully align the XMC connectors to the connectors on the carrier card and push the PXH820 and the carrier card
together.
4. Mount the 4 screws to fix the PXH820 card to the carrier card.
5. Mount the PXH820 front panel face plate around the SFF-8644 connector block –align the LEDs and the holes in the face
plate. Fix the two screws.
Step 4 - Installing and Removing Cables
Installing and removing cables can be done while the systems are running. Hot plugging / removing cables are fully supported.

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Connecting Cables
Please carefully install the cable connector into the connector housing on the PXH820 adapter card. To install the cable, match the
cable house with the connector on the PXH820 adapter card. Use even pressure to insert the connector until it is secure. Adhere to
ESD guidelines when installing the cables to ensure you don’t damage the board. Computer cables should always use strain relief to
protect the connected equipment from excessive force on the cable. This is especially important for cables between racks. Note
that for wider than x4 connections, the same cable-ports (ie port 1 through 4) should be used on both hosts to ensure that the
cards properly link up as x8 or x16.
The PXH820 supports both copper and active optical cables (AOC). Specifications can be found in Table 1. The max distance may
change if connecting to other PCIe products.
Cable
Speed
Distance
Copper MiniSAS-HD
Gen3
9 meters
Copper PCIe 3.0 cable
Gen3
TBD
Dolphin MSFC Fiber optic cable (AOC)
Gen3
100 meters
Table 1: Cable Specifications
Disconnecting Cables
Please carefully pull the release tab to release the cable from the locking latches and gently pull the cable out of the connector
guides.
Step 5 –Installing the Dolphin eXpressWare Software
The PXH820 adapter card is compliant with Dolphin’s eXpressWare software package for the PX product line. Please visit
http://www.dolphinics.com/px.html
to register and download the latest documentation and software. It is recommended to follow the quick installation guide found
on the web page above to install the software for your operating system.
TIP: Dolphin provides software and documentation for several product families; please remember to select the PX product family
before downloading. The PXH820 requires Dolphin software version DIS 5.14.0 or higher to operate.
The software download requires a password to log in. The password will automatically be emailed to you if you follow the
instructions found on the getting started document bundled with the adapter card. If you fail to provide the correct serial number
found on the getting started document, your request will be managed manually.
Step 6 - Verify Installation & LEDs
The PXH820 comes with 4 bi-color LEDs which show the corresponding cable port status according to Table 2: LED below. Please
note that the eXpressWare software must be installed and configured properly to ensure the LEDs are lit correctly.
The LEDs are visible through cut-outs in the PCIe bracket on each side of the cable connector block.
LED color
Function
Off
No cable installed
Yellow
Cable installed, no link
Green
Cable installed, link gen 3
Green blinking
Cable installed, link gen ½
Table 2: LED behavior
Please install the Dolphin eXpressWare software and run the included verification tests as suggested by the software installation
procedure and documentation.

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Operation and Maintenance
Configuration and DIP Switches
The PXH820 has one bank of 8 DIP switches controlling the operation of the card. The default factory setting for the PXH820 is NTB
mode, short cable, and single (up to x16) link connection. Please carefully read the documentation before modifying any DIP switch
settings. Please pay close attention to ON and OFF positions written on the DIP switch.
DIP Switch Bank –Configuration
Figure 2: DIP Switch show the bank of DIP switches for the PXH820. It is used to configure
the adapter card. Please leave all undocumented DIP switches in the default position.
The table below lists all options and DIP switch settings for the card
Note: Some DIP switch configuration options may be changed in the future versions. Please always consult the latest user guide for
details.
DIP no.
Description
ON
OFF
Default
1
Leave in default position
Not used
NTB mode, Normal
operation
OFF
2
Leave in default position
Not used
Normal operation
OFF
3
Enable dual x8 link configuration
Dual x8 link on cable
ports 1-2 and 3-4
Single x16 link, cable ports
1-4
OFF
4
Enable long-cable configuration
Support cables of 4-9m
length
Supports cables of 0.4-3m
length or fiber optic cables
OFF
5
TBD
TBD
Normal operation
OFF
6
CMI Disable
Will disable the CMI
interface.
CMI will be used if a PCIe
3.0 cable is detected
OFF
7
Holds the management processors
in reset
Board management is
held in reset
Normal operation
OFF
8
Enables the card to boot if the
EEPROM has been corrupted
Safe EEPROM
Normal operation
OFF
Figure 2: DIP Switch

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Use Cases Summary and Settings
The PXH820 card may be used in the following use cases as summarized in Table 3: Use Case DIP switch settings below.
Use
case
Description
DIP switch setting
A
Two node NTB configuration. Both
systems have PXH820 or PXH830
installed.
DIP4 on if long cables
All other off
B
Three node NTB configuration. All systems
have a PXH820 or PXH830 installed
DIP3 on to enable two x8 links
DIP4 on if long cables
All other off
C
Multi node with MXS824 switch
All DIP Switches off
Table 3: Use Case DIP switch settings
Use Case A - 2 Node Configuration –NTB Mode
Each node has a PXH820 adapter and a direct x4, x8 or x16 cable connection to the other system having a PXH820 or PXH830 card.
Both adapter cards operate in NTB mode. The DIP-Switch is set to all off, except if a long cable is used.
Connecting the cables for 2 Node Configurations, x16 link
To establish an x16 link, a given port number should be connected to the same port number on the other card.
Table 4: Required x16 cabling. Always connect a cable
from Port #x to Port #x
Port,
Host
A
Port,
Host
B
P1
P1
P2
P2
P3
P3
P4
P4
A failure connecting any of the cables will cause the link
to re-train to x8 or x4.
Connecting the cables for 2 Node
Configurations, x8 link
To establish an x8 link, please select one of the alternatives below.
Table 5: Alternative x8 cabling, select alternative 1, 2, 3 or 4.
Alternatives
Host
A
Host
B
1
P1
P1
P2
P2
2
P1
P3
P2
P4
3
P3
P1
P4
P2
4
P3
P3
P4
P4
Connecting the cables for 2 Node Configurations, x4 link
To establish an x4 link when in dual port mode, please connect any port to any port on the other card.

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Use Case B - 3 Node Configuration –NTB Mode
Each node has a PXH820 or PXH830 adapter and a direct x4 or x8 cable connection is used between all systems. All adapter cards
operate in NTB mode. The DIP-Switch DIP3 is ON to enable dual port mode.
Connecting the cables for 3 Node Configurations, x8 link
Connect the cables between two nodes as described above, connecting two nodes x8. Connect the third node to the two other
cards using similar rules. Always connect P1 + P2 to P1 + P2 or P3 + P4
Use Case C - Multi node with MXS824 switch –NTB Mode
Each node has a PXH820 adapter and a direct x4, x8 or x16 cable connection to the MXS824 switch. All PXH820 adapter cards
operate in NTB mode. All DIP-Switches are off. The drawing below shows a 12-node cluster using PXH830 cards. Any mix of PXH820
and PXH830 can be used.
Please consult the MXS824 Users Guide for information how to configure the MXS824 switch for x4, x8 or x16 links and how to
build larger configurations. Currently, up to 60 systems are supported in one PCIe fabric. Please contact Dolphin for more
information.

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Firmware Upgrade
The PXH820 design uses a microcontroller (BMC) to implement the PCIe CMI protocol and other maintenance functions. Dolphin
may from time to time publish updated firmware for the microcontroller or EEPROM data for the card. Please note that standard
PLX firmware tools cannot be used to upgrade the firmware. Please contact Dolphin for more information.
Identifying the Card
The card has a label-sticker with the serial number in the format ‘PXH820-YY-ZZZZZZ’, where YY denotes the card revision (e.g. CC)
and ZZZZZZ denotes the serialized production number (e.g. 012345) –this whole string makes up the serial number of the card (i.e.
PXH820-BB-012345).
You can also get this information using lspci in Linux:
First, identify the devices for the Dolphin Host card:
Then run lspci, and identify the card. It will show up as something like
This
shows the card as revision 0x4242 (hexadecimal values of the ‘BB’ letters in the ASCII table), with the production number
0x00000067 (0000103 in decimal).
[root@metty ~]# lspci -s a:0.0 -v
0a:00.0 PCI bridge: PLX Technology, Inc. Device 8733 (rev ca) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 37, NUMA node 0
Memory at f4900000 (32-bit, non-prefetchable) [size=256K]
Bus: primary=0a, secondary=0b, subordinate=0c, sec-latency=0
Memory behind bridge: f0000000-f48fffff
Prefetchable memory behind bridge: 0000000040000000-000000007fffffff
Capabilities: [40] Power Management version 3
Capabilities: [48] MSI: Enable+ Count=1/8 Maskable+ 64bit+
Capabilities: [68] Express Upstream Port, MSI 00
Capabilities: [a4] Subsystem: Dolphin Interconnect Solutions AS Device 0820
Capabilities: [100] Device Serial Number 00-00-42-42-00-00-00-67
Capabilities: [fb4] Advanced Error Reporting
Capabilities: [138] Power Budgeting <?>
Capabilities: [10c] #19
Capabilities: [148] Virtual Channel
Capabilities: [e00] #12
Capabilities: [b00] Latency Tolerance Reporting
Capabilities: [b70] Vendor Specific Information: ID=0001 Rev=0 Len=010 <?>
Kernel driver in use: pcieport
Kernel modules: shpchp
#lspci
0a:00.0 PCI bridge: PLX Technology, Inc. Device 8733 (rev ca)
0a:00.1 System peripheral: PLX Technology, Inc. Device 87d0 (rev ca)
0a:00.2 System peripheral: PLX Technology, Inc. Device 87d0 (rev ca)
0b:08.0 PCI bridge: PLX Technology, Inc. Device 8733 (rev ca)
0c:00.0 Bridge: PLX Technology, Inc. PEX 8732 32-lane, 8-Port PCI Express Gen 3 (8.0 GT/s) Switch (rev ca)

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Technical Information
PCIe Cable Signals
The external PCI Express cable connector (SFF-8644) and cabling support the following signals:
•PETpN/PETnN: PCI Express Transmitter pairs, labeled where N is the Lane number (starting with 0); “p” is the true signal
while “n” is the complement signal.
•PERpN/PERnN: PCI Express Receiver pairs, labeled where N is the Lane number (starting with 0); “p” is the true signal
while “n” is the complement signal.
•PWR: Power to support AOC and signal conditioning components within the cable assembly.
•MGTPWR: Power supplied to the connector for cable management components that are needed while the link is not
active. This needs to be active if the subsystem has power.
•CBLPRSNT#: Cable present detect, an active-low signal pulled-down by the cable when it is inserted into the PXH820
connector.
•CADDR: Signal used to configure the upstream cable management device address.
•CINT#: Signal asserted by the cable assembly to indicate a need for service via the CMI controller.
•CMISDA: Management interface data line. Used for both initial link setup and sideband messages when used with CMI
compliant cables.
•CMISCL: Management interface clock line. Used for both initial link setup and sideband messages when used with CMI
compliant cables.
External PCIe x4 Cable Connector Pin-Out
Column
Row
9
8
7
6
5
4
3
2
1
D
GND
PETn2
PETp2
GND
PETn1
PETp1
GND
MGTPWR
PWR
C
GND
PETn3
PETp3
GND
PETn0
PETp0
GND
CMISDA
CMISCL
B
GND
PERn2
PERp2
GND
PERn1
PERp1
GND
CBLPRSNT#
PWR
A
GND
PERn3
PERp3
GND
PERn0
PERp0
GND
CINT#
CADDR
Table 6; External PCIe x4 cable Pin-Out

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Compliance and Regulatory Testing
EMC Compliance
The Dolphin PCI Express PXH820 adapter has been tested to the following relevant test standards for PCI
Express cards, telecommunication and industry equipment installed in a standard PC:
EN 55032:2012,
EN 55035:2017,
EN 61000-3-2:2014,
EN 61000-3-3:2013
CISPR 32:2012 First Edition
CISPR 35:2016 Edition 1.0 (CISPR/I/412/CDV)
47 CFR Part 15, Subpart B (Clause 15.107 and 15.109
This does not ensure that it will comply with these standards in any random PC. It is the responsibility of the integrator to ensure
that their products are compliant with all regulations where their product will be used.
RoHS Compliance
The Dolphin PXH820 is RoHS compliant. A Compliance certificate issued by the manufacturer is
available upon request.
FCC Class A
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of
the FCC Rules.

PXH820 User’s Guide – Dolphin Interconnect Solutions Page 16
Limited Warranty
Dolphin Interconnect Solutions warrants this product to be free from manufacturing defects under the following terms:
Warranty Period
Dolphin warrants the product for one (1) year from the date of purchase. Extended warranties are available.
Coverage
To the extent permitted by applicable law, this warranty does not apply to:
•Damages caused by operator error or non-compliance with instructions available for the product.
•Use or attempt to use or program firmware not approved by Dolphin.
•Damage which results from accident, abuse, misuse, neglected improper handling or improper installation; moisture,
corrosive environments, high voltage surges, shipping or abnormal working conditions.
•Damages which results from violating the specified operating or storage temperatures and airflow.
•Damages caused by acts of nature, e.g. floods, storms, fire, or earthquakes.
•Damage caused by any power source out of range or not provided with the product.
•Normal wear and tear.
•Attempts to repair, modify, open or upgrade the product by personnel or agents not authorized by Dolphin.
•Products that have had the product serial number tampered with or removed.
•Damage to the product caused by products not supplied by Dolphin.
Service Procedure
If the product proves defective during the Warranty Period, you should contact the seller that supplied you with the product, or if
you purchased it directly from Dolphin, email [email protected] to obtain a valid RMA number and instructions.
Products returned to Dolphin without a proper RMA number will not be serviced under this warranty.

PXH820 User’s Guide – Dolphin Interconnect Solutions Page 17
Product Revision history
The following tables gives a general overview of the hardware and firmware capabilities and changes. Please contact Dolphin if you
have any questions.
Adapter revision
The adapter revision covers the PCB and BOM changes. The revision can be found on the serial number label located on the card.
Adapter revision
Capabilities / Changes
PXH820-AA
•Internal version. Early users should return the card to Dolphin.
PXH820-BB
•Initial production version
BMC Firmware versions
The BMC Firmware version is covering the BMC firmware changes. The current firmware version can be found by running the
dis_diag utility. The BMC firmware is field upgradeable.
BMC Firmware version
Capabilities / Changes
8.10
•Initial production version
EEPROM Versions
The EEPROM Versions is covering the PCIe Switch configuration data. The current EEPROM version can be found by running the
dis_diag utility. The EEPROM data is field upgradable.
EEPROM version
Capabilities / Changes
2
•Initial production version
Support
More information about the product, support and software download can be found at http://www.dolphinics.com/px.html. Please
email [email protected] if you have any questions.