Table of Contents Preface .............................. 2 Safety ............................5 1.1 Safety Symbols used in this document ................5 1.2 General Safety Precautions ..................... 5 1.3 Reference and Architecture Specifications ............... 5 1.4 Product Definition ......................6 1.5 Terms and Acronyms ....................... 6 Hardware Platform .........................
Page 4
7.3.3 DC PEM Indicators .....................22 7.3.4 Specification for the power connection cables .............23 7.4 DC Pin Assignment ......................23 Thermal ..........................24 8.1 System Airflow Path ......................24 8.2 Cooling Capacity ......................24 8.2.1 Front Board Air Distribution .................24 8.2.2 Rear Board Air Distribution .................25 Shelf Management ........................26...
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 Hazardous voltage! This is the electrical hazard symbol. It indicates that there are dangerous voltages inside the Shelf.
1.4 Product Definition The aTCA-80606PD is a 6U / 6-Slot AdvancedTCA Shelf for fault-tolerant / high-availability applications. • Dual Star Backplane, bussed IPMB. It is designed to work with two redundant Shelf Managers. Fans controlled by the Shelf Manager or through autonomous fan controller.
2 Hardware Platform 6U/19’’ chassis with front card cage for ATCA boards and rear card cage for ATCA RTM board. The chassis is designed for easy access of any Field-Replaceable Units (FRU). • 6-slot ATCA backplane with dual star Fabric Interface, Dual Star Base Interface and bussed IPMB interface, supporting four 8U node board slots and two 8U hub board slots and providing 40Gb/s connectivity (4 lanes with 10Gb/s).
Page 8
Figure 2: Rear View 12. DC PEM B 13. DC PEM A...
3 ATCA Backplane The 6-slot ATCA monolithic backplane provides: • Four ATCA Node Slots • Two ATCA Hub slots • Two dedicated Shelf Manager slots • Two PEM slots • Two fan Tray slots Within the Shelf, there is one fixed board-backplane. This board is completely passive and is not Field-Replaceable Units.
3.5 Update Channel Interface The Update Channels are wired between two redundant ATCA Backplane slots as 10 differential pairs with 100 Ohms impedance (see Table 2). The Update Channel is intended to pass information between two redundant ATCA Blades.
3.6 Intelligent Platform Management Bus (IPMB) The Shelf uses an Intelligent Platform Management Bus (IPMB) for management communications among all ATCA Boards 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.
3.8 Logic Ground The ATCA Backplane provides a mechanism to connect Logic Ground and Shelf Ground. To connect Logic Ground and Shelf Ground, the mounting screws at the positions marked by arrow must be fixed. Figure 4: Logic Ground By default, Logic Ground and Shelf Ground are isolated, the chassis is shipped without the mounting screws at the marked positions.
4 Air Filter 4.1 Introduction The ATCA Shelf provides a front-replaceable air filter. 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.
5 Shelf Ground Connection Hazardous voltage! Before powering-up the Shelf, make sure that the Shelf Ground terminals are connected to Protective Earth (PE) of the building. The ATCA Shelf provides a Shelf ground terminal at the upper rear side. The Shelf ground terminal provides two threads (M5) with a 16.0mm spacing between thread centers to...
6 Fan Trays 6.1 Introduction The 6 Slot ATCA Shelf contains two hot-swappable Fan Trays arranged in a side to side configuration for maximum air flow. The Fan Trays are locked into the Shelf by a mini compression latch with indicator. A hot-swap push button is used to provide hot-swap functionality.
The system is designed to run indefinitely with any single fan failure. When one fan fails, all other fans are increased to full speed. The Fan Tray has sufficient cooling capacity to keep the Shelf cooled with a single fan failure.
6.3 Fan Tray Signals The Fan Tray provides signals for: • Fuse monitoring • Status of the Hot Swap Controller • Fan Speed • Temperature These signals are controlled by the IPM Controller devices on the Fan Tray PCB. The Shelf Manager has access to these signals via IPMB.
6.5 Fan Tray Connector Pin Assignment Table 6: Fan Tray Connector Pin Assignment Pin# Signal Description Pin# Signal Description -48V_B -48VDC Feed B -48V_A -48VDC Feed A -48V_B -48VDC Feed B -48V_A -48VDC Feed A -48V_B -48VDC Feed B...
6.6 Fan Tray IPMB Addresses Geographic address pins H2 at the Fan Tray Backplane connector determine the hardware addresses of the devices. Table 7: Fan Tray IPMB address...
7 Power Hazardous voltage! Before working ensure that the power is removed from the power connection cables. The Shelf supports Power Entry Modules (PEMs) with DC voltage power input. The Shelf can be powered using a regular telecommunication power supply of -48/-60 VDC with a VDC return.
7.3 DC Power Entry Modular Two pluggable redundant DC Power Entry Modules (PEM) are located at the rear bottom side of the Shelf. Each PEM provides power terminals for 75A power feed. Each power feed consists of a –48 VDC cable and its corresponding return cable. The feed is protected by a 60 A fused switches.
7.3.1 DC PEM Power Distribution Power distribution within the Shelf originates from each DC PEM and powers all the blades, the Shelf Managers, and the Fan Trays. For maximum fault tolerance, the two DC PEMs should be independently powered by a separate Feed A and Feed B.
7.3.4 Specification for the power connection cables Required wire size: Diameter AWG6 when using two-hole lugs for screw M4 max. length 2.5 to 3.0 m suitable for 60A at 50°C ambient temperature. Required terminals: Use two hole terminals. 7.4 DC PEM Pin Assignment...
8 Thermal 8.1 System Airflow Path The 6 slots ATCA Shelf provides an airflow using two Fan Trays at right and left sides of the Shelf. Each Fan Tray has 6 fans moving air from the right side to the left side of the Shelf in a push-pull arrangement.
8.2.2 Rear Board Air Distribution The airflow is measured with impedance boards acc. to the PICMG 3.0 R3.0 specification. • Rear board pressure drop: 24 Pa at 0.14 m³/min...
9 Shelf Management The ATCA Shelves are designed to work with two redundant Shelf Managers in dedicated Shelf Manager slots. Upon request also a version with on-blade shelf management is available. With on-blade shelf management, the I²C components of the PEMs and the SEEPROM are connected to the internal I²C bus on the Fan Trays.
9.2 Introduction The Shelf Manager is a 78mmX280mm board that fits into a dedicated Shelf Manager slot in an ATCA Shelf. The Shelf Manager has two main responsibilities: 1. Manage/track the FRU population and common infrastructure of a Shelf, especially the power, cooling and interconnect resources and their usage.
9.3 Front Panel Components Figure 12: Shelf Manager Front Panel Component 9.4 Hardware Address The Shelf Manager reads the hardware address and parity bit from the backplane connector of the Dedicated Shelf Manager slot. Geographic address pins (HA0, HA7) at the Backplane connector determine bit 0 and bit 7, bit 1...6 are hardware-coded on the Shelf Manager...
10 Technical Data Table 11: Technical Data Physical Dimensions Height Width 482.6 mm (19“) Depth (w/o handles) 426.65 mm Weight Shipping weight completely assembled 41.5 Kg with packaging Shelf weight completely assembled 25.5 Kg Power DC Input voltage nom.
Need help?
Do you have a question about the aTCA-80606PD and is the answer not in the manual?
Questions and answers