ADLINK Technology aTCA-81514PA User manual

aTCA-81514PA
15U 14-Slot AdvancedTCA® Shelf
User‘s Manual
Manual Rev.: 1.0
Revision Date: December 20, 2018
Part No.: 50-1G050-1000

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aTCA-81514PA
Preface
Copyright © 2018 ADLINK Technology, Inc.
This document contains proprietary information protected by copyright. All rights are reserved. No part
of this manual may be reproduced by any mechanical, electronic, or other means in any form without
prior written permission of the manufacturer.
Disclaimer
The information in this document is subject to change without prior notice in order to improve
reliability, design, and function and does not represent a commitment on the part of the manufacturer.
In no event will the manufacturer be liable for direct, indirect, special, incidental, or consequential
damages arising out of the use or inability to use the product or documentation, even if advised of the
possibility of such damages.
Environmental Responsibility
ADLINK is committed to fulfill its social responsibility to global environmental
preservation through compliance with the European Union's Restriction of
Hazardous Substances (RoHS) directive and Waste Electrical and Electronic
Equipment (WEEE) directive. Environmental protection is a top priority for
ADLINK. We have enforced measures to ensure that our products,
manufacturing processes, components, and raw materials have as little
impact on the environment as possible. When products are at their end of life,
our customers are encouraged to dispose of them in accordance with the
product disposal and/or recovery programs prescribed by their nation or
company.
Battery Labels (for products with battery)
California Proposition 65 Warning
WARNING: This product can expose you to chemicals including acrylamide, arsenic,
benzene, cadmium, Tris(1,3-dichloro-2-propyl)phosphate (TDCPP), 1,4-Dioxane,
formaldehyde, lead, DEHP, styrene, DINP, BBP, PVC, and vinyl materials, which are
known to the State of California to cause cancer, and acrylamide, benzene, cadmium, lead, mercury,
phthalates, toluene, DEHP, DIDP, DnHP, DBP, BBP, PVC, and vinyl materials, which are known to
the State of California to cause birth defects or other reproductive harm. For more information go to
www.p65warnings.ca.gov.
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aTCA-81514PA
Table of Contents
Preface...................................................................................................................................2
1Safety.............................................................................................................................5
1.1 Safety Symbols used in this document.............................................................................5
1.2 General Safety Precautions.............................................................................................5
1.3 References and Architecture Specifications.....................................................................6
1.4 Product Definition ............................................................................................................6
1.5 Terms and Acronyms.......................................................................................................6
1.6 Hardware Platform...........................................................................................................7
1.7 Shelf Front and Rear View...............................................................................................8
1.8 ESD Wrist Strap Terminals..............................................................................................9
2ATCA Backplane ........................................................................................................10
2.1 Interfaces.......................................................................................................................10
2.1.1 Base Interface..................................................................................................10
2.1.2 Fabric Interface................................................................................................10
2.1.3 Synchronization Clock Interface.......................................................................10
2.1.4 Power Interface................................................................................................10
2.1.5 Update Channel Interface ................................................................................11
2.2 Intelligent Platform Management Bus (IPMB).................................................................11
2.3 Shelf SEEPROM............................................................................................................12
2.3.1 Shelf SEEPROM Location................................................................................12
2.3.2 Shelf SEEPROMs I²C Addresses.....................................................................12
2.4 Shelf Manager Cross Connect.......................................................................................13
2.5 Logic Ground.................................................................................................................14
3Air Filter.......................................................................................................................15
3.1 Introduction....................................................................................................................15
3.2 Air Filter Presence Switch..............................................................................................15
4Shelf Ground Connection..........................................................................................16
4.1 Specification for the Shelf Ground Connection Cable.....................................................16
5Fan Tray ......................................................................................................................17
5.1 Introduction....................................................................................................................17
5.2 Fan Tray Block Diagram ................................................................................................18
5.3 Fan Tray Connectors and Indicators..............................................................................19
5.4 Fan Control....................................................................................................................20
5.5 Sensor Table .................................................................................................................22
5.6 RS‐232 Serial Console Interfaces..................................................................................24
6Power...........................................................................................................................25
6.1 Introduction....................................................................................................................25
6.2 Power Distribution..........................................................................................................26
6.3 AC Power Supply Units (PSUs) .....................................................................................27
6.4 Power Components .......................................................................................................28
6.5 PMBus Interface............................................................................................................28
6.6 Power Branches ............................................................................................................29

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7Shelf Management......................................................................................................30
8Technical Data............................................................................................................31
8.1 Dimensions....................................................................................................................32
Getting Service ...................................................................................................................33

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aTCA-81514PA
1 Safety
The intended audience of this User’s Manual is system integrators and
hardware/software engineers.
1.1 Safety Symbols used in this document
1.2 General Safety Precautions
• Service personnel must know the necessary electrical safety, wiring and
connection practices for installing this equipment.
• Install this equipment only in compliance with local and national electrical
codes.
• For additional information about this equipment, see the
PICMG 3.0 Specification (www.picmg.org).
Hazardous voltage!
This is the electrical hazard symbol. It indicates that there are dangerous
voltages inside the Shelf.
Caution!
This is the user caution symbol. It indicates a condition where damage of the
equipment or injury of the service personnel could occur. To reduce the risk of
damage or injury, follow all steps or procedures as instructed.
Risk of electrostatic discharge!
The Shelf contains static sensitive devices. To prevent static damage you must
wear an ESD wrist strap.
Warning!
Voltages over 42 VAC or 60 VDC can be present in this equipment. As defined in the
PICMG 3.0 Specification, this equipment is intended to be accessed, installed and
maintained by qualified and trained service personnel only.

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1.3 References and Architecture Specifications
• Pigeon Point Systems IPM Sentry Shelf‐External Interface
Reference (www.pigeonpoint.com)
• PICMG® 3.0 Revision 3.0 AdvancedTCA® Base
Specification (www.picmg.org)
1.4 Product Definition
The aTCA-81514PA is a 14-Slot AdvancedTCA® Shelf with 40G backplane
connectivity.
• 40G Dual Star backplane, bussed IPM interface, dedicated slots for two
Shelf Managers.
1.5 Terms and Acronyms
Table 1: Terms and Acronyms
Term Definition
ATCA Advanced Telecom Computing Architecture
Backplane Passive circuit board providing the connectors for the front boards. Power
distribution, management and auxiliary signal connections are supported.
CDM Shelf FRU Data Module
ECN Engineering Change Notice
ESD Electrostatic Discharge
ETSI European Telecommunications Standards Institute
FRU Field Replaceable Unit
IPMB Intelligent Platform Management Bus
IPMC Intelligent Platform Management Controller
IPMI Intelligent Platform Management Interface
PCB Printed Circuit Board
PEM Power Entry Module
RTC Real Time Clock
RTM Rear Transition Module
Shelf Enclosure containing subrack, backplane, boards, cooling devices, PEMs and Fan
Trays
VRTN Voltage Return
PSU Power Supply Unit

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1.6 Hardware Platform
The Shelf is 15 U high and 19“ rack mountable. The chassis is designed for easy
access of any Field-Replaceable Units (FRU).
• Powder‐coated 15U / 19“ chassis with front card cage for ATCA boards and
rear card cage for ATCA RTM boards
• 14 slot 40G ATCA Dual Star Backplane, Dual Star Base Interface, bussed
IPM interface, supporting twelve 8U node board slots and two 8U hub slots
• Mounting brackets for 19“ racks and rear fixing point
• ESD Wrist Strap Terminals at the front and the rear
• Two dedicated Shelf Manager bays accepting Shelf Managers
• Front-pluggable, hot-swappable Fan Tray
• Air inlet filter with presence monitoring
• Four IEC320‐C20 AC inputs
• 3 kW front‐pluggable AC Power Supplies with wide range input in a
redundant 3 + 1 configuration.
• Four switches for the AC power supplies

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1.7 Shelf Front and Rear View
Figure 1: Shelf Front View
1 Cable Tray 7 Hot Swap LED
2
Backplane
8
Fan Tray Fault LED
3
Front Card Cage
9
Fan Tray OK LED
4
Fan Tray
10
ESD Wrist Strap
5
Serial Interfaces for ShMC
11
Slot for PSU
6
Hot Swap Push Button
12
Filler panel

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Figure 2: Shelf Rear View
1 Cable Tray 3 ESD Wrist Strap Terminal
2
Ground Terminal
4
Power Input and Switches
1.8 ESD Wrist Strap Terminals
One ESD Wrist Strap Terminal is located at the Shelf‘s upper front side, one ESD
Wrist Strap Terminal is located at the left rear side of the Shelf.
Risk of electrostatic discharge!
The Shelf contains static sensitive devices. To prevent static damage you
must wear an ESD wrist strap.

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2 ATCA Backplane
The 14‐slot ATCA monolithic Backplane provides:
40 Gb/s connectivity (4 lanes with 10 Gb/s)
12 ATCA Node slots
ATCA Hub slots
Two dedicated Shelf Manager slots
PEM Slots
Fan Tray slot
SEEPROMs
2.1 Interfaces
2.1.1 Base Interface
Logical slots 1 and 2 are the hub slots for the Dual Star Base Interface.
Base Interface Channel 1 (ShMC) of logical slot 1 and 2 is cross connected to both
dedicated Shelf Manager slots on the ATCA Backplane.
2.1.2 Fabric Interface
The Fabric Interface is wired as Dual Star, supporting four ports (8 pairs) per
channel. See PICMG® 3.0 AdvancedTCA® Base Specification for details.
2.1.3 Synchronization Clock Interface
Six differential pairs of synchronization clocks are bused between all 14 ATCA slots
and terminated at both ends with 80.6 Ohms between each differential pair.
2.1.4 Power Interface
Power distribution within the ATCA Backplane is divided into 4 Power Branches. This
topology is used for safety reasons to keep the max. current per branch less than
50 A. Slots connected by update ports, are on separate power branches as well as
both hub slots, the Shelf Manager slots and the Fan Trays.

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2.1.5 Update Channel Interface
The Update Channels are wired between two redundant ATCA Backplane slots as
10 differential pairs.
The Update Channel is intended to pass information between two redundant ATCA
Boards.
Figure 3: Update Channels
2.2 Intelligent Platform Management Bus (IPMB)
The Shelf uses an Intelligent Platform Management Bus (IPMB) for management
communications among all ATCA Boards, the Fan Trays and the Shelf Managers. The
reliability of the IPMB is improved by the addition of a second IPMB, with the two
IPMBs referenced as IPMB‐A and IPMB‐B.
IPMB‐A and IPMB‐B are routed to the ATCA slots in a bussed configuration.
Figure 4: IPMB

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2.3 Shelf SEEPROM
The Shelf SEEPROM is a repository of the shelf-specific information, capabilities of the
system and other user-configurable options.
The SEEPROM contains as example:
•a list of which slots are connected together
•how the update channels are routed
•how many slots are in the system
•what the maximum power is to each slot
•the serial number of the Shelf
•the backplane topology etc.
The Shelf Managers use this information to provide functions such as electronic
keying, controlling the power state of the system, etc.
The Shelf Managers cache the information that is stored in the SEEPROMs so that the
SEEPROM is only needed when the Shelf Managers are first inserted or when the
Shelf is first turned on.
The redundant SEEPROMs ensure that if one is corrupt or non‐functional, the second
can provide the necessary information. The Shelf Manager selects what set of
information is correct and then synchronizes the two SEEPROMs from the internally
cached copy of the SEEPROM information.
2.3.1 Shelf SEEPROM Location
The SEEPROMs are located at the rear side of the backplane.
2.3.2 Shelf SEEPROMs I²C Addresses
The SEEPROMs are managed by the IPM Controller of the fan tray, they have
different address and are attached to the fan tray Local I2C channel!
CDM I²C Channel I²C Bus Address (7/8 bit)
SEEPROM1 Fan Tray Local Channel 0xa4/52
SEEPROM2 Fan Tray Local Channel 0xa6/53

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2.4 Shelf Manager Cross Connect
The ATCA Backplane provides cross connect traces between the Base Hubs and
the Shelf Managers.
Figure 5: Shelf Manager Cross Connect
Table 2: Connector (P23) pin assignments for Shelf Manager Cross Connect
Row Designation ab cd ef gh
5 Shelf Manager Port
with Shelf Manager
Cross Connects
Tx1+ Tx1
‐
Rx1+ Rx1
‐
Tx2+ Tx2
‐
Rx2+ Rx2
‐
Shelf Manager Cross
Connect 1 Shelf Manager Cross Connect 2

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2.5 Logic Ground
Figure 6: Logic Ground
The ATCA Backplane provides a mechanism to connect Logic Ground (GND) and
Shelf Ground (Shelf_GND). You can connect/isolate Logic Ground by swapping two
screws from position (A) to position (B).
• Screws at position (A): Logic Ground and Shelf Ground connected.
• Screws at position (B): Logic Ground and Shelf Ground isolated.
By default, Logic Ground and Shelf Ground are isolated.
Torque for the screws: 0.7 Nm +10%

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3 Air Filter
Figure 7: Air Filter
3.1 Introduction
The ATCA Shelf provides a replaceable air filter located on top of the fan tray. The
filter element is an open cell polyurethane foam special coating to provide improved
fire retardation and fungi resistance.
The filter meets the requirements of the Telcordia Technologies Generic
Requirements GR‐78‐CORE specification.
3.2 Air Filter Presence Switch
The air filter presence is detected by a sensor on the backplane. The signal is
routed to the IPM controller of the fan tray.

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4 Shelf Ground Connection
The ATCA Shelf provides a Shelf ground terminal at the left rear side. The Shelf
ground terminal provides two threads (M6) with a 15.88 mm (5/8“) spacing between
thread centers to connect a two hole lug Shelf ground terminal cable.
Figure 8: Shelf Ground Terminal
1
Ground Terminal
4.1 Specification for the Shelf Ground Connection Cable
Required wire size: #3 AWG or #2 AWG, maximum length 3 m.
Required terminals: Use only two hole lug terminals. (For example PANDUIT
LCC2‐14AHQ or LCD2‐14AHQ with 45° angle)
Hazardous voltage!
Before powering
‐
up the Shelf, make sure that the Shelf Ground terminals are
connected to Protective Earth (PE) of the building.

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aTCA-81514PA
5 Fan Tray
5.1 Introduction
The Fan Tray is an intelligent FRU controlled by the ShMCs via IPMB.
The interchangeable Fan Tray is equipped with 8 high speed / high air flow fans
controlled as a group by the IPM Controller in the Fan Tray.
The Fan Tray is locked into the Shelf with captive screws. A Hot Swap push button
is used to provide hot‐swap functionality.
The Fan Tray provides:
• A blue Hot Swap LED
• A red Fan Tray Fault LED
• A green Fan Tray OK LED
• A Hot Swap push button
The Fan Tray is controlled via an on‐board IPM controller. The Shelf Manager
performs management of the Fan Tray through the two independent bussed IPMB
connections.
With optional on‐blade shelf management, the SEEPROM on the backplane are
connected to the internal I²C bus on the Fan Trays. The on‐blade Shelf Manager has
access to these components via the IPM controller of the Fan Trays.
The speed of each individual fan is monitored. If any of the fan speeds drops
below the desired fan speed, a System Event Log (SEL) entry is logged by the
Shelf Manager. The Shelf Manager then generates alerts and sets alarm
conditions as necessary.
The system is designed to run indefinitely with any single fan failure. When one fan
fails, all other fans are set to full speed.
Caution!
The fan tray is not redundant. Depending on the operation temperature and the
load state a fan tray swap must be carried out within a maximum of 30 seconds.

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ShMC 1 Serial
ShMC 2 Serial
Air Filter present
4EXT_PRES 1...4
4PSU_PRES1...4
NSEAT (Short Pin)
NTC 1
NTC 2
GND
2.5 V
U
Ref
3.3 V
AVREF
GND (Fan Tray present)
SDA/SCL_FT
local I²C Bus I2C Buffer
SEEPROMLM75LM75Enable
I2C_CONT_FT
IPMB_A
Watchdo g
FusesBranch 2 OK
FusesBranch 1 OK
3.6 V measurement
3.3 V measurement
H/S1OK
H/S OFF
Enable
Enable IPMB_B
H/S2 OK
Control ler
ORin g
VRTN_A
VRTN_B
-48V_A
-48V_B
Control ler
ORin g
VRTN_A
VRTN_B
-48V_A
-48V_B
3.3 V
Converter
Current 3V6_FT
5.2 Fan Tray Block Diagram
Figure 9: Fan Tray Block Diagram

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Figure 10: Fan Tray
5.3 Fan Tray Connectors and Indicators
The front panel includes a green Fan Tray OK LED, a red Fan Tray Fault LED, and a
blue Hot Swap LED.
The Hot Swap push button indicates to the Shelf Managers that the Fan Tray is about
to be removed. Its use is optional, but it is provided so that service personnel can be
trained to look for a blue LED to be illuminated on any active component before
removing it from the system. Once the operator pushes the Hot Swap button, the Shelf
Manager is informed of the pending extraction. When the Shelf Manager feels it is
“safe“ to remove the Fan Tray, the blue Hot Swap LED illuminates solid.
Table 3: LEDs on Fan Tray front panel
Color Description Status Condition
Green Fan Tray OK LED Off No Power to the Fan Tray
Solid green Normal Operation
Red Fan Tray Fault LED Solid red Attention Status (error condition)
Blue Hot Swap LED Off No Power to the Fan Tray, or
not OK to extract the Fan Tray
Short blink Preparing for extraction
Solid blue Ready to remove

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5.4 Fan Control
The Fan Tray‘s on‐board IPM controller has three operation modes:
Shelf Manager Mode:
The Shelf Manager performs management of the Fan Tray through the two
independent bussed IPMB connections.
Board Control Mode:
The fan tray is controlled by the board in any of the 14 board slots using the
PICMG extended IPMI commands. If the fan tray does not receive the “Set Fan
Level Command” for more than 65 seconds, the fan tray will exit the Board
Control Mode.
Autonomous Mode:
When the connection to the Shelf Manager is lost, or the Shelf Manger is absent, and
the fan tray is not working in Board Control Mode, the fan controller takes over the fan
control after 65 seconds.
Four different control behaviours are user‐selectable by a DIP switch located at the
fan tray‘s rear side.
(1) Full speed
Fan level is set to maximum (15)
(2) Outlet temperature based control
The fan level depends on the maximum reading of the two NTC sensors above
the card cage and the selected curve.
(3) Intake temperature based control
The fan level depends on the reading of the LM75 temperature on the fan tray
PCB and the selected curve.
(4) Fixed speed based control
The fan controller set the fans in a fixed speed.
Figure 11: DIP Switch