AdvancedTCA Shelf, 5-slot - ATCA - Schroff's AdvancedTCA ...

AdvancedTCA Shelf, 5-slot 

User’s Manual 

Product Number: 

11596-012 

Doc-No: 63972-195 

Revision: R1.1, July 27, 2007

Rev. Date updated Change 

D1.0 January 30, 2007 Draft Release 

R1.0 June 20, 2007 Initial Release 

R1.1 July 27, 2007 Minor layout improvements 

Impressum: 

Schroff GmbH 

D-75334 Straubenhardt, Germany 

The details in this manual have been carefully compiled and 

checked - supported by certified Quality Management System 

to EN ISO 9001/2000 

The company cannot accept any liability for errors or misprints. 

The company reserves the right to amendments of technical 

specifications due to further development and improvement of 

products. 

Copyright © 2007 

All rights and technical modifications reserved.

Schroff 5-Slot AdvancedTCA Shelf 

11596-012 

Table of Contents 

1 Safety................................................................................................................. 1 

1.1 Safety Symbols used in this document................................................................ 1 

1.2 General Safety Precautions................................................................................. 1 

1.3 References and Architecture Specifications ........................................................ 2 

1.4 Product Definition ................................................................................................ 2 

1.5 Terms and Acronyms........................................................................................... 3 

2 Hardware Platform............................................................................................ 4 

2.1 Shelf Front View .................................................................................................. 5 

2.2 ESD Wrist Strap Terminals.................................................................................. 5 

3 ATCA Backplane............................................................................................... 6 

3.1 Logical to Physical Slot Mapping ......................................................................... 6 

3.2 Interfaces ............................................................................................................. 6 

3.2.1 Base Interface........................................................................................ 6 

3.2.2 Fabric Interface...................................................................................... 6 

3.2.3 Synchronization Clock Interface ............................................................ 6 

3.2.4 Update Channel Interface...................................................................... 7 

3.2.5 Intelligent Platform Management Interface ............................................ 7 

3.3 Non-ATCA Connectors on the ATCA Backplane................................................. 8 

3.3.1 SAP Backplane Connector .................................................................... 8 

3.3.2 Shelf Manager Backplane connector..................................................... 8 

3.3.3 IPMB-A and IPMB-B Connectors (Custom Configuration)..................... 8 

3.4 Shelf SEEPROM.................................................................................................. 9 

4 Air Filter........................................................................................................... 10 

4.1 Introduction ........................................................................................................ 10 

4.2 Air Filter Replacement ....................................................................................... 10 

5 Shelf Ground Connection .............................................................................. 11 

5.1 Specification for the Shelf Ground connection cable ......................................... 11 

6 Shelf Alarm Panel (Accessory sold separately) .......................................... 12 

6.1 SAP Front Panel ................................................................................................ 12 

6.2 SAP Block Diagram ........................................................................................... 13 

6.3 SAP SEEPROM................................................................................................. 13 

6.4 SAP I²C Addresses............................................................................................ 13 

6.5 User definable LEDs.......................................................................................... 14 

6.6 RS-232 Serial Console Interfaces on SAP ........................................................ 14 

6.7 SAP Console Cable for the Shelf Manger Serial Interface ................................ 15 

6.7.1 Shelf Alarm Panel Backplane Connector............................................. 16 

6.8 SAP Temperature Sensor.................................................................................. 16 

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11596-012 

6.9 SAP PCA9555 ................................................................................................... 17 

6.10 SAP Telco Alarms.............................................................................................. 18 

6.10.1 Telco Alarm Interface........................................................................... 18 

6.10.2 Telco Alarm LEDs................................................................................ 18 

6.10.3 Alarm Silence Push Button .................................................................. 18 

6.10.4 Alarm Reset ......................................................................................... 18 

6.10.5 Telco Alarm Connector (DB15-male)................................................... 19 

7 Fan Tray........................................................................................................... 20 

7.1 Introduction ........................................................................................................ 20 

7.2 Fan Control Module ........................................................................................... 21 

7.3 Fan Control Module Block Diagram................................................................... 21 

7.4 Fan Control Module Features ............................................................................ 22 

7.5 Power Supply..................................................................................................... 23 

7.6 AC Power Supply............................................................................................... 24 

7.6.1 Power Supply Backplane Connector ................................................... 24 

8 Shelf Manager ................................................................................................. 25 

8.1 Introduction ........................................................................................................ 25 

8.2 Front Panel Components................................................................................... 27 

8.3 Bused IPMB Interface........................................................................................ 28 

8.4 Ethernet Channels ............................................................................................. 28 

8.5 Master-Only I²C Bus .......................................................................................... 29 

8.6 Shelf Manager RS-232 Serial Interface ............................................................. 30 

8.7 Front Panel RESET push button ....................................................................... 30 

8.8 Input Voltage and Fuse Monitoring.................................................................... 31 

8.9 Hardware Address ............................................................................................. 31 

8.10 Hot Swap Interface ............................................................................................ 32 

8.11 Hot Swap Switch and Board Presence.............................................................. 32 

8.11.1 Hot Swap Switch.................................................................................. 32 

8.11.2 Board Presence ................................................................................... 32 

8.11.3 Hot Swap LED ..................................................................................... 32 

8.12 RTC Backup Battery (Assembly option) ............................................................ 33 

8.13 Reprogramming of the FLASH Memory in the ShMM-500 ................................ 34 

8.13.1 Introduction .......................................................................................... 34 

8.13.2 Reprogramming the Shelf Manager from a TFTP server..................... 34 

8.14 Shelf Manager Front Panel and Backplane connectors .................................... 35 

9 Technical Data ................................................................................................ 37 

9.1 Shelf Mechanical Dimensions............................................................................ 38 

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11596-012 

Safety 

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. 

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. 

Danger of electrostatic discharge! 

The Shelf contains static sensitive devices. To prevent static damage you must 

wear an ESD wrist strap. 

1.2 General Safety Precautions 

Warning! 

Voltages over 60 VDC can be present in this equipment. As defined in the 

PICMG 3.0 Specification, this equipment is intended to be accessed, to be 

installed and maintained by qualified and trained service personnel only. 

• Service personnel must know the necessary electrical safety, wiring and 

connection practices for installing this equipment in a telecommunication 

environment. 

• 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.com). 

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11596-012 

Safety 

1.3 References and Architecture Specifications 

• Pigeon Point Systems IPM Sentry Shelf-External Interface Reference 

(www.pigeonpoint.com) 

• PICMG ® 3.0 Revision 2.0 AdvancedTCA® Base Specification 

(www.picmg.com) 

• PICMG ® Engineering Change Notice ECN 3.0-2.0-002 

• Control Resources Smart Fan Multi SD - Installation & Operation Manual 

www.controlres.com 

1.4 Product Definition 

The Schroff 11596-012 is a 5 U / 5 Slot AdvancedTCA Shelf with AC power 

supply for Enterprise or Development applications. 

The Shelf has provisions for a Schroff ShMM-ACB-IV Shelf Manager and a Shelf 

Alarm Panel (SAP) for Telco Alarms and RS-232 interface. 

Use of independent Fan Control Modules (FCMs) allows the Shelf to function 

without the use of Shelf Managers. 

ATCA Blades are intended to operate with Shelf Managers, many ATCA 

Blades can be configured to operate without Shelf Management. Please 

consult your ATCA Blade’s User Manual. 

Schroff Shelf Manager and SAP are available as accessory items. 



11596-012 

Safety 

1.5 Terms and Acronyms 

Table 1: Terms and Acronyms 

Term 

ATCA 

Backplane 

CDM 

Chassis 

CMM 

ECN 

ESD 

ETSI 

FRU 

IPMB 

IPMC 

IPMI 

PCB 

PEM 

RTC 

RTM 

Shelf 

VRTN 

Definition 

Advanced Telecom Computing Architecture 

Passive circuit board providing the connectors for the front boards. Power distribution, 

management and auxiliary signal connections are supported 

Chassis Data Module 

Enclosure containing subrack, Backplane, boards, cooling devices, PEMs, same as Shelf 

Chassis Management Module, same as Shelf Manager 

Engineering Change Notice 

Electrostatic Discharge 

European Telecommunications Standards Institute 

Field Replaceable Unit 

Intelligent Platform Management Bus 

Intelligent Platform Management Controller 

Intelligent Platform Management Interface 

Printed Circuit Board 

Power Entry Module 

Real Time Clock 

Rear Transition Module 

See Chassis 

Voltage Return 



11596-012 

Hardware Platform 

2 Hardware Platform 

The Schroff 5 U / 5 Slot AdvancedTCA Shelf implements the following features: 

• 5 slot ATCA Backplane with triple replicated Mesh Fabric Interface, Dual 

Star Base Interface and bused IPMB interface, supporting three 8 U node 

board slots and two 8 U hub slots 

• Mounting brackets for 19“ cabinets 

• Removable top cover allows easy access to top blade for debugging during 

development 

• ESD Wrist Strap Terminals at front and rear 

• Dedicated slot for a Schroff Shelf Manager based on Pigeon Point ShMM- 

500 

• Cooling for 200 W per Front Board and 15 W for each RTM 

• Front pluggable Fan Tray and removable NEBS compliant Air Filter 

• Pluggable 1200 W AC power supply with 20 A circuit breaker protection 

• Power LED indicator shows presence of input power 

• Dedicated slot for a Schroff Shelf Alarm Panel (SAP) that provides Telco 

Alarm interface, Alarm Status LEDs and serial interface for the Shelf 

Manager 



11596-012 

Hardware Platform 

2.1 Shelf Front View 

Figure 1: Shelf Front and Rear View 

12707826 

1 Front Card Cage 8 Power Entry Module 

2 Temperature Sensor 9 Air Filter and Fan Tray 

3 AC Power Supply 10 ATCA 5-Slot Backplane 

4 Power LED 11 Shelf Alarm Panel (SAP) 

5 Front ESD Wrist Strap Terminal 12 Shelf Manager 

6 Rear Card Cage 13 Rear ESD Wrist Strap Terminal 

7 Shelf Ground Terminal 

2.2 ESD Wrist Strap Terminals 

Danger of electrostatic discharge! 

Static electricity can harm delicate components inside the Shelf. You must 

wear an ESD wrist strap before exchanging any part or electric component! 

The ESD Wrist Strap Terminals (4 mm banana jacks) are located at the lower 

front and rear side of the Shelf. 



11596-012 

ATCA Backplane 

3 ATCA Backplane 

The 5-slot ATCA monolithic Backplane provides: 

• 3 ATCA Node slots 

• 2 ATCA Hub slots 

• 1 slot for optional Shelf Manager 

• 1 slot for optional SAP 

• 1 slot for AC Power Supply 

3.1 Logical to Physical Slot Mapping 

The physical and logical slots are sequentially numbered from the lower to the 

upper side. 

Table 2: 5-Slot ATCA Backplane physical to logical slot mapping 

Physical 

Slot # 

Logical Slot 

# 

HW-Address 

(Hex) 

IPMB- 

Address 

(Hex) 

Update 

Channel 

Power 

Domain 

Node 5 5 45 8A 1 

Node 4 4 44 88 2 

Node 3 3 43 86 1 

Hub Slot 2 2 42 84 2 

Hub Slot 1 1 41 82 1 

3.2 Interfaces 

3.2.1 Base Interface 

3.2.2 Fabric Interface 

Logical slots 1 and 2 are the hub slots for the Dual Star Base Interface. 

The Fabric Interface in the ATCA Backplane is routed as triple replicated Full 

Mesh with 3 Channels (24 differential pairs total), interconnecting each ATCA 

slot. See PICMG® 3.0 AdvancedTCA® Base Specification for details. 

3.2.3 Synchronization Clock Interface 

Six pairs of synchronization clocks are bused between all 5 ATCA slots and 

terminated at each end with an 80.5 Ohm resistor across the differential signal 

line for each of the six differential pairs. 



11596-012 


3.2.4 Update Channel Interface 

The Update Channels are each routed with 10 differential pairs between slot 1 

and 2 and between slot 3 and 4. (See Table 2 in this Chapter) 

The Update Channel can be used to pass data or routing information between 

two redundant ATCA Boards. 

3.2.5 Intelligent Platform Management Interface 

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. 

The IPMB-A and IPMB-B are routed to the ATCA slots in a bused configuration. 

Figure 2: Bused IPMB 

ATCA Board 



IPMC IPMC IPMC 

Shelf Manager 

IPMB-A 

IPMB-B 

12706973 



11596-012 


3.3 Non-ATCA Connectors on the ATCA Backplane 

3.3.1 SAP Backplane Connector 

For pin assignment see Chapter 6.7.1, "Shelf Alarm Panel Backplane 

Connector". 

3.3.2 Shelf Manager Backplane connector 

The Shelf Manager Backplane connector provide interface for: 

• IPMB-A and IPMB-B (I²C-bus) 

• Base Interface Channel 1 (ShMC) of the Base Interface Hub slots 

For pin assignment see Table 16 and Table 17. 

3.3.3 IPMB-A and IPMB-B Connectors (Custom Configuration) 

Provisions for IPMB-A and IPMB-B connectors are located at the rear upper side 

of the Backplane. Installation of the connectors is available on customer 

request. 

Figure 3: IPMB-A and IPMB-B connectors 

Table 3: IPMB_A Connector 

12706944 

Pin# 

Description 

1 IPMB-A, Serial clock, 

2 Logic Ground 

3 IPMB-A, Serial Data 

4 3,3 VDC power supply for Shelf I²C-bus devices 

Table 4: IPMB_B Connector 

Pin# 

Description 

1 IPMB-B, Serial clock 

2 Logic Ground 

3 IPMB-B, Serial Data 

4 3,3 VDC power supply for Shelf I²C-bus devices 



11596-012 


3.4 Shelf SEEPROM 

The Shelf SEEPROM is located at the Backplane. It is a repository of the Shelf 

specific information, capabilities of the system and other user configurable 

options. The two SEEPROMs are directly accessible by the Shelf Managers 

dedicated I²C bus. 

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 Manager use this information to provide functions such as electronic 

keying, controlling the power state of the system, etc. 

The Shelf Manager cache the information that is stored in the SEEPROMs so 

that the SEEPROM is only needed when the Shelf Manager is 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. 

Table 5: Shelf SEEPROM I²C addresses 

SEEPROM I²C-Channel I²C-bus address 

1 Channel 1 0xa4 / 52 

2 Channel 2 0xa4 / 52 



11596-012 

Air Filter 

4 Air Filter 

Figure 4: Air Filter 

12706936 

1 Air Filter Front Panel 3 Filter Element 

2 Captive Thumbscrew 4 Fixing screws 

4.1 Introduction 

The ATCA Shelf provides a front replaceable air filter. 

The air filter is a 1/4“ thick 25PPI filter. 

4.2 Air Filter Replacement 

1 Loosen the captive thumbscrew (2) and pull out the Air Filter. 

2 Unscrew both Fixing Screws (4) and replace the Filter Element (3). 



11596-012 

Shelf Ground Connection 

5 Shelf Ground Connection 


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 lower rear side.The 

Shelf ground terminal provides two studs (10-32 UNF) with a 15.88 mm spacing 

between stud centers to connect a double-lug Shelf ground terminal cable. 

Figure 5: Shelf Ground Terminal 

1 Shelf Ground Terminal 

12707827 

5.1 Specification for the Shelf Ground connection cable 

Required wire size: AWG10 

Required terminals: Use only double lug terminals. 



11596-012 

Shelf Alarm Panel (Accessory sold separately) 

6 Shelf Alarm Panel (Accessory sold separately) 

Some Shelf Manager I/O functionalities have been moved to a separate board 

called Shelf Alarm Panel (SAP). The Shelf Alarm Panel is located at the lower 

front side of the Shelf. It provides: 

• 3 Shelf Alarm LEDs (MINOR, MAJOR, CRITICAL) 

• 3 User definable LEDs 

• The Telco Alarm connector (DB15-male) 

• The Alarm Silence Push Button 

• Serial console interfaces for Schroff Shelf Managers (RJ45 connectors) 

Figure 6: Connection between Shelf Manager and SAP 

MIN 3 

U 

SERIAL 1 MAJ 2 

S 

E 

SERIAL 2 

CRIT 1 R 

RST 

CH0 

Serial Console Interface 

Enable 

Buffer 

LTC4300 

Master-Only 

I²C-bus 

ShMM-500 


6.1 SAP Front Panel 

Figure 7: Front Panel SAP 

12706941 

12706932 

1 Fixing screw 7 LED USER 2 

2 Serial Interface for Shelf Manager 8 LED USER 3 

3 LED Minor Alarm (amber) 9 Telco Alarm Connector 

4 LED Major Alarm (red) 10 Alarm Silence button 

5 LED Critical Alarm (red) 11 Serial Interface for Shelf Manager 2 

(not used in this Shelf) 

6 LED USER 1 



11596-012 


6.2 SAP Block Diagram 

Figure 8: SAP Block Diagram 

User 1 

SDA/SCL (I2C Bus CH0) 

User 2 

User 3 

LED 

Buffer 

LM75 Temp. 

Sensor 

0x96 

SEEPROM 

0xa6 

TELCO Alarm Connector 

ALARM LEDs 

Critical 

Major 

Minor 

ALARM SILENCE 

Critical Alarm 

Major Alarm 

Minor Alarm 

Power Alarm 

Minor Clear 

Major Clear 

PCA9555 

I2C-bus I/O port 

0x44 

SAP Presence 

I2C_PWR_A (ShMC1) 

3.3 V I2C_PWR_B (ShMC1) 

I2C_PWR_A (ShMC2) 

I2C_PWR_B (ShMC2) 

INV_ACTIVE_ACB1 

INV_ACTIVE_ACB2 

Backplane Connector 

RJ45 

ESD 

protection 

Serial Console of 

Shelf Manager 1 

RJ45 

ESD 

protection 

Serial Console of 

Shelf Manager 2 

12706921 

6.3 SAP SEEPROM 

The SAP SEEPROM is connected to the Master-Only I²C-bus and is a Microchip 

24LC256 device. 

6.4 SAP I²C Addresses 

Table 6: SAP I²C Addresses 

LM75 SEEPROM PCA9555 

0x96/0x4b 0xa6/0x53 0x44/0x22 



11596-012 


6.5 User definable LEDs 

The LEDs USER (1, 2, 3) are user definable and connected to the I²C-bus I/O 

port of the PCA 9555 on the SAP. 

6.6 RS-232 Serial Console Interfaces on SAP 

Figure 9: RS-232 Serial Console Interface on Shelf Alarm Panel 

Pin 1 Pin 8 

The SAP provides two RS-232 serial console connector (SERIAL 1 and 2) for 

Shelf Manager 1 and 2. The connectors are 8-pin RJ45 modular receptacles. 

A full set of RS-232 signals, including modem control, is provided. The serial 

interface is implemented on the ShMM-500. 

In the 11596-012 Shelf only the Connector “serial 1“ is used! 

12705811 

The serial console default configuration is: 

• 115200 baud 

• no parity 

• 8 data bits 

• 1 stop bit 

Table 7: RS-232 Serial Console Interface Pin assignment 

RJ45 Pin 

RS-232 

Signal 

ShMM-500 

Signal 

Type 

Description 

1 RTS RTS Out Request To Send 

2 DTR DTR Out Data Terminal Ready 

3 TxD TXD0 Out Transmit Data 

4 GND GND --- Logic Ground 

5 GND GND --- Logic Ground 

6 RxD RXD0 In Receive Data 

7 DSR DSR In Data Set Ready 

8 CTS CTS In Clear To Send 



11596-012 


6.7 SAP Console Cable for the Shelf Manger Serial Interface 

Figure 10: RJ45 to DB9 Serial Console Cable 

RJ45-male 

1 8 

RTS 

DTR 

TxD 

GND 

GND 

RxD 

DSR 

CTS 

1 

2 

3 

4 

5 

6 

7 

8 

8 

6 

2 

5 

5 

3 

4 

7 

CTS 

DSR 

RxD 

GND 

GND 

TxD 

DTR 

RTS 

DB9-female 

5 1 

9 6 

12706929 

The connectors are shown with the cables pointing away. 

Serial Console Cable: Accessory sold separately. 

Schroff Catalog-No: 23204-187 



11596-012 


6.7.1 Shelf Alarm Panel Backplane Connector 

Figure 11: Shelf Alarm Panel Backplane Connector 

12706926 

Table 8: Shelf Alarm Panel Backplane Connector Pin Assignment 

6.8 SAP Temperature Sensor 

SAP ATCA Backplane Connector 

Pin A Description B Description C Description 

1 -48V_A -48 V Feed A -48V_B -48 V Feed B 

2 VRTN_A Voltage return Feed 

A 

3 VRTN_B Voltage return Feed 

B 

4 

5 I2C_PWR_A 3.6 V from Shelf 

Manager 

6 GND Ground GND Ground 

I2C_PWR_B 

3.6 V from Shelf 

Manager 

7 SDA_CH0 Data I²C-bus 

Channel 0 

GND 

Ground 

8 SCL_CH0 Clock I²C-bus 

Channel 0 

INT 

GND 

9 RXD0_ACB1 Receive Data 


10 DSR_ACB1 Data Set Ready 


DTR_ACB1 

Data Terminal Ready 


11 CD_ACB1 Carrier Detect 


12 CTS_ACB1 Clear To Send 


13 TXD0_ACB1 Transmit Data 


14 

RTS_ACB1 

Request To Send 


15 SAP_PRES SAP Presence signal 

to Shelf Manager 

SCL_A 

16 INV_ACTIVE_A 

CB1 

Active signal from 


SHELF_GND 

Shelf Ground 

The LM75 temperature sensor measuring the board temperature is located on 

the SAP PCB. The temperature sensor is connected to the Master-Only I²C-bus. 



11596-012 


6.9 SAP PCA9555 

The PCA9555 device: 

• controls the status of the LEDs 

• reads the status of the Telco Alarm Cutoff push button (CLEAR) 

• controls the Telco Alarm relays 

Table 9: SAP PCA9555 Device Function 

D 

PCA9555 I/O pins Function State 

0.0 Power Alarm to telco relays output 1 = relays powered 

0.1 Minor Alarm to telco relays output 1 = relays powered 

0.2 Major Alarm to telco relays output 1 = relays powered 

0.3 Critical Alarm to telco relays output 1 = relays powered 

0.4 N/C Pulled High 

0.5 LED_MIN (Minor alarm LED) output 1 = On 

0.6 LED_MAJ (Major alarm LED) output 1 = On 

0.7 LED_CRIT (Critical alarm LED) output 1 = On 

1.0 Alarm cutoff push button input 0 = push button pushed 

1.1 Minor Clear input 0 = voltage applied to input pins 

1.2 Major Clear input 0 = voltage applied to input pins 



1.5 LED_USER3 output 1 = On 





11596-012 


6.10 SAP Telco Alarms 

6.10.1 Telco Alarm Interface 

The SAP provides a Telco Alarm interface on the DB15-male connector. 

Three relay outputs are used for remote alarm distribution, reflecting the state of 

the three Alarm LEDs. The relays are capable of carrying 72 VDC or 1 A with a 

max. rating of 30 VA. 

6.10.2 Telco Alarm LEDs 

The Shelf Alarm Panel provides the Telco Alarm LEDs. These LEDs indicate 

presence of Critical, Major and Minor alarms as follows: 

Table 10: Telco Alarm LEDs 

State 

Off 

On 

Flashing 

Description 

No alarm active 

Alarm active 

Alarm active, but silenced 

6.10.3 Alarm Silence Push Button 

6.10.4 Alarm Reset 

The Alarm Silence push button on the Shelf Alarm Panel faceplate deactivates 

the alarm relays for a defined time. To indicate the Alarm Silence state, the 

Alarm LEDs flash. By pressing the Alarm Silence push button a second time, the 

alarm relays are reactivated and the Alarm LEDs are solid. 

The Alarm Silence push button only activates the Alarm Silence state, but 

does not reset the alarms. If the silence interval (default 600 s) is exceeded 

without resolving the alarms, the alarms will be re-initiated. 

Hardware Reset: 

Two relay inputs at the DB15 connector are used to reset the Minor and Major 

alarm state. 

The reset inputs accept timed pulse inputs for clearing Minor and Major alarm 

states. Reset is accomplished by asserting a voltage differential from 3.3 VDC 

to 72 VDC for between 200 ms and 300 ms. The acceptance voltage range is 

from 0 to 48 VDC continuous (handles up to 60 VDC at a 50% duty cycle). The 

current drawn by a reset input does not exceed 12 mA. 

There is no hardware reset (reset input) for the Critical Alarm state. 

Software Reset: 

The RMCP and CLI functions can be used to set and reset the Telco Alarms 

(incl. Critical Alarm). See the Pigeon Point Shelf Manager External Interface 

Reference for more information. 



11596-012 


6.10.5 Telco Alarm Connector (DB15-male) 

Figure 12: Telco Alarm Connector (DB15-male) 

12705896 

Table 11: Telco Alarm Connector Pin Assignment 

Pin Name Description 

1 AMIR+ MinorReset+ 

2 AMIR- MinorReset- 

3 AMAR+ MajorReset+ 

4 AMAR- MajorReset- 

5 ACNO CriticalAlarm - NO 

6 ACNC CriticalAlarm - NC 

7 ACCOM CriticalAlarm - COM 

8 AMINO MinorAlarm – NO 

9 AMINC MinorAlarm – NC 

10 AMINCOM MinorAlarm – COM 

11 AMANO MajorAlarm – NO 

12 AMANC MajorAlarm – NC 

13 AMACOM MajorAlarm – COM 

14 APRCO PwrAlarm – NO 

15 APRCOM PwrAlarm - COM 

Shield Shelf-GND Shelf Ground 



11596-012 

Fan Tray 

7 Fan Tray 


The 5 Slot ATCA Shelf contains a interchangeable Fan Tray. The Fan Tray is 

plugged-in at the right front side of the Shelf. Removing the Air Filter (3) exposes 

the access to the Fan Tray (1). 

The Fan Tray’s two fans provide sufficient cooling for the ATCA Blades and the 

RTM. The fan’ s speed is controlled by a Fan Control Module (FCM) located at 

the rear of the Shelf under the RTM space. 

Fan speed is based on the exhaust temperature measured by a NTC Thermal 

Sensor and not under IPMI control. This feature allows the Shelf to operate 

without Shelf Management. 

Figure 13: Fan Tray 

1 Fan Tray 3 Air Filter Tray 

2 Captive Thumbscrew 4 Captive Thumbscrew 

12706937 



11596-012 

Fan Tray 

7.2 Fan Control Module 

Figure 14: Fan Control Module (FCM) 

12707829 

1 Fan Control Module (FCM) 2 Fan Tray Connector 

7.3 Fan Control Module Block Diagram 

Figure 15: Fan Control Module Block Diagram 

Backplane Connector X3 

4 3 2 1 

VRTN 

-48V_A 

Control Temperature 

L 

M 

H 

J7 

3 

2 

1 

J6 

Number of Sensors 

J5 

48 24 12 

J3 

Fan Voltage Selector 

J2 

J1 

- + + B + A 

Fan Voltage Supply Voltage 

J4 

J8 

Temperature Sensors 

T3 T2 T1 

Fan Control Module 

NTC 

12707825 



11596-012 

Fan Tray 

7.4 Fan Control Module Features 

Fan Speed Control: The speed of all fans is varied by adjusting the voltage 

applied to the fans. The voltage is determined by the temperature sensor 

connected to header J8. The control voltage range is 13 VDC to 25 VDC. 

Fan Current Limiting: The load regulating circuitry is configured with a 5 Amp 

active current limit. 

Multiple Control Temperature Settings: Three control temperatures 

(35 ° C (L), 40 °C (M) or 45 °C (H)) are selectable by jumper (J7). 

The default factory setting is 45 °C (H). With this configuration the fans will run 

at 55% speed if the exhaust temperature is below 42 °C. As the exhaust 

temperature rises to 45 °C, the fan speed will proportionally change to 100%. 

Figure 16: Fan Speed 



11596-012 

Fan Tray 

7.5 Power Supply 


Parts of the power supply may be exposed with hazardous voltage. Always 

remove mains/line connector before carry out any assembly work. 

Caution! 

Your system has not been provided with a AC power cable. Purchase a 

AC power cable that is approved for use in your country. The AC power cable 

must be rated for the product and for the voltage and current marked on the 

product's electrical ratings label. The voltage and current rating of the cable 

should be greater than the ratings marked on the product. 

The Shelf has a open frame AC power supply with wide range input. 

The power supply is plugged in in a dedicated slot at the bottom of the Shelf 

The power input is provided by a Power Entry Module with IEC 320-C20 

connector, integrated line filter and a 20 A circuit breaker. 

Figure 17: Power Supply 

1 Fixing Screw 2 Power Supply 

12707830 

Figure 18: PEM components 

1 Ground Terminal 3 AC Connector (IEC320-C20) 

2 Power Entry Module 4 Mains Switch / Circuit Breaker 

12706940 



11596-012 

Fan Tray 

7.6 AC Power Supply 

Table 12: Technical Data 

Input Voltage Range 

Input Frequency 

Input Protection 

Output Power 

Output Voltage 

Overload Protection 

Overvoltage Protection 

Operating Temperature 

Derating 

85 VAC - 264 VAC 

47 Hz - 63 Hz 

Internal Fuse, 20 A 

1200 W 

48 VDC 

Auto Recovery 

Latched Shutdown 

0° C to 70 ° C 

2.5% / °C, 50° C to 70° C 

7.6.1 Power Supply Backplane Connector 

Figure 19: Power Supply Backplane Connector 

12707831 

Table 13: Power Supply Backplane Connector Pin Assignment 

PIN Function PIN Function 

1 VRTN_A 13 

2 VRTN_A 14 

3 VRTN_A 15 

4 -48 V_A 16 

5 -48 V_A 17 

6 -48 V_A 18 

7 -48 V_A (Enable) 19 

8 VRTN_A (Sense+) 20 

9 -48 V_A (Sense -) 21 

10 22 Shelf_GND 

11 23 AC_Line 

12 24 AC_Neutral 



11596-012 


8 Shelf Manager 

The Shelf Manager is not included with the Shelf. 

This Chapter describes the Shelf Manager hardware. For explicit software 

documentation see: 

• Pigeon Point Shelf Manager User Guide 

• Pigeon Point Shelf Manager External Interface Reference 

The documentation is available for registered users at www.schroff.biz 


The Schroff Shelf Manager is a 78 mm x 280 mm form factor board that fits into 

a dedicated Shelf Manager slot in a Schroff ATCA Shelf. 

The Shelf management based on the Pigeon Point Shelf management solution 

for AdvancedTCA products. 

The Shelf management executes on the Shelf Management Mezzanine 500 

(ShMM-500), a compact SO-DIMM form-factor module, installed on a carrier 

board called ATCA Carrier Board version IV (ACB-IV). 

The ShMM-500 and the ACB-IV together build the ShMM-ACB-IV, the Shelf 

Manager for the Schroff 5 slot ATCA Shelf. 

The ACB-IV carrier board includes several on-board devices that enable 

different aspects of Shelf management based on the ShMM-500. These facilities 

include I²C-based hardware monitoring/control and GPIO expander devices. 

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. 

Within the Shelf, this management/tracking primarily occurs through interactions 

between the Shelf Manager and the IPM Controllers over IPMB-0. 

2 Enable the overall System Manager to join in that management/tracking 

through the System Manager Interface, which is typically implemented over 

Ethernet. 



11596-012 


Figure 20: Schroff Shelf Manager 

12705953 

1 Extraction handle 5 Backplane Connector (J1) 

2 ShMM-500 6 Fixing screw 

3 ACB-IV Carrier Board 7 RTC Backup Battery 

4 Backplane Connector (J2) 



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8.2 Front Panel Components 

Figure 21: Shelf Manager Front Panel Components 

12705952 

1 Fixing screw 7 RESET push button 

2 ETH 1 Link/Activity LED (green) 

- On = Link 

- Off = No Link 

- Blinking = Activity 

3 ETH 1 Speed LED (yellow) 

- Off = 10 Mb 

- On = 100 Mb 

4 ETH 0 Speed LED (yellow) 

- Off = 10 Mb 

- On = 100 Mb 

5 ETH 0 Link/Activity LED (green) 

- On = Link 

- Off = No Link 

- Blinking = Activity 

6 ETH 0 Ethernet Service Connector 

(RJ45) 

8 Shelf Manager Status LED (red) 

- Red = Out of Service 

9 Shelf Manager Status LED (green) 

- Solid Green = in Service, active 


- Blinking = in Service, Backup Shelf 

Manager 

10 Hot Swap LED (blue) 

- Solid Blue = ready to remove 

- Blinking = Hot Swap is requested 

- Off = No Hot Swap possible 

11 Extraction handle 

12 Hot Swap switch 

- Hot Swap is activated by lifting the 

extraction handle. (See next chapter) 



11596-012 


8.3 Bused IPMB Interface 

The ShMM-500 provides two IPMBs. The IPMB-A and IPMB-B from the 

ShMM-500 are routed directly through the ACB-IV PCB to the Backplane 

connector (J2). The ATCA Backplane buses the two IPMBs to the ATCA boards. 

The Active# signal of the ShMM-500 is used to switch on/off the pull-up resistors 

of the IPMBs. 

Figure 22: Block diagram bused IPMB 

3,3 V 

Active# 

ShMM-500 

IPMB_A 

IPMB_B 

SCL 

SDA 

SCL 

SDA 

Transistors 

4 x 4k7 

Backplane Connector 

12705843 

8.4 Ethernet Channels 

The Shelf Manager provides two 10/100 Ethernet interfaces. The first Ethernet 

channel (ETH0) is routed either to the RJ45 connector on the front panel or to 

the ATCA Backplane connector J2. The routing depends on the position of four 

jumpers on the Shelf Manager. The ATCA Backplane routes ETH0 from the 

connector J2 to the ShMC port on the corresponding Base Interface Hub board. 

The second Ethernet channel (ETH1) is routed to the other Base Interface Hub 

board (ShMC Cross Connect). Both Ethernet ports support 10 Mb (10BASE-T) 

and 100 Mb (100BASE-TX) connections. 

The Shelf Manager provides two status LEDs for each Ethernet channel (ETH0 

and ETH1). The LEDs are: 

• Yellow: indicates 100 Mb speed when lit 

• Green: indicates link when lit and activity when blinking 

Figure 23: Jumpers for Ethernet routing shown in default position 2-3 

12705910 

Jumpers in position 1-2 routes ETH0 to the RJ45 connector at the Shelf 

Managers front panel. 

Jumpers in position 2-3 (default) routes ETH0 to the Backplane connector. 



11596-012 


8.5 Master-Only I²C Bus 

The master-only I²C bus is used internally on the ShMM-500 for the RTC and 

SEEPROM devices. The ACB-IV carrier board also has a number of on-board 

I²C devices connected to the master-only I²C bus. These devices read the slot's 

hardware address and communicate with the System Management controllers 

ADM1024/1026. 

The master only I²C-bus is buffered by a LTC4300 device and then routed to the 

SAP (Channel 0). 

The master-only I²C bus is fed to a 4-channel switch (PCA9545) and then routed 

through the ATCA Backplane connector to the Shelf FRU SEEPROMs on the 

Backplane (Channel 1 and 2) 

The ’Active’ signal of the ShMM-500 is used to enable the I²C switch and the 

LTC4300 buffer, so that only the active Shelf Manager has access to the Shelf 

I²C-bus devices. 

Figure 24: Distribution of the Master-Only I²C-bus 

FRU SEEPROM 1 

(Shelf FRU Data) 

(0xA4) 

FRU SEEPROM 2 

(Shelf FRU Data) 

(0xA4) 

- LM75 (0x96) 

- SEEPROM (0xA6) 

- PCA9555 (0x44) 

SAP 

CH1 

CH2 

CH0 

I²C -switch 

PCA9545 

LTC4300 

enable 

Master-Only I²C -bus 


Table 14: I²C-bus addresses of the Shelf 

12706942 

I²C addr. ShMM ACB-IV CH0 (SAP) CH 1 CH 2 

0x44 /22 

PCA9555 Telco 

Alarms 

0x46 / 23 

PCA9554 HW- 

Addr 

0x58 / 2c 

ADM1024 

0x5c / 2e 

ADM1026 

0x96 / 4b 

LM75 SAP temperature 

0xa0 / 50 SEEPROM 

0xa4 / 52 

Shelf SEEPROM Shelf SEEPROM 

0xa6 / 53 

SEEPROM SAP 

0xe0 / 70 I²C-bus switch 

0xd0 / 68 RTC DS1337 



11596-012 


8.6 Shelf Manager RS-232 Serial Interface 

A serial interface is implemented on the ShMM-500. The Shelf Manager 

provides an RS-232 console interface that provides a full set of RS-232 signals, 

including modem control. These signals are routed through the ShMM-ACB-IV 

backplane connector to RJ45 connectors on the SAP. 

The serial console default configuration is: 

• 115200 baud 

• no parity 

• 8 data bits 

• 1 stop bit 

8.7 Front Panel RESET push button 

The Shelf Manager provides a RESET push button on the front panel. It is 

connected to the ShMM-500's /MR signal. 

Pushing the RESET button will reset the Shelf Manager 



11596-012 


8.8 Input Voltage and Fuse Monitoring 

To detect a missing supply voltage as well as a blown fuse, the 

ShMM-ACB-IV provides voltage monitoring and control functions. 

The -48 VDC input voltages at the Backplane connector and behind the fuses 

are connected to the ADM1026 chip through optical-isolation devices. 

Figure 25: Input Voltage and Fuse Monitoring 

To ADM1026 

+ 

3.6V DC/DC 

converter 

- 

-48 V_B bus voltage 

-48 V_A bus voltage 

-48 V_B ACB voltage 

-48 V_A ACB voltage 

Fuse monitoring 

VRTN_A 

- 48 V_A 

VRTN_B 

- 48 V_B 

Backplane Connector (J1) 

12705829 

Signal 

Description 

-48 V_A bus voltage Indicates the presence of the –48 V_A / VRTN_A at the backplane connector (J1). 

This signal is connected to pin 46 of the ADM1026 

-48 V_A ACB voltage Indicates the presence of the –48 V_A / VRTN_A behind the ACB-IV’s mains fuse. 


-48 V_B bus voltage Indicates the presence of the –48 V_B / VRTN_B at the backplane connector (J1). 


-48 V_B ACB voltage Indicates the presence of the –48 V_B / VRTN_B behind the ACB-IV’s mains fuse. 


8.9 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 (HA[0], HA7) at the Backplane connector determine bit 0 and bit 7, bit 1...6 

are hardware-coded on the Shelf Manager PCB. 

HW-Addr. 

IPMB-Addr. 

Shelf Manager 0x08 0x10 



11596-012 


8.10 Hot Swap Interface 

The ShMM-ACB-IV provides a Hot Swap interface allowing the ShMM-ACB-IV 

to be replaced without powering down the Shelf. The Hot Swap interface is 

implemented using the on-ShMM-500 CPLD device. The interface is composed 

of three components: 

• Hot Swap switch at injector/ejector handle 

• Presence signal indicating that the ShMM-ACB-IV is fully seated in its 

backplane connector 

• Hot Swap LED 

8.11 Hot Swap Switch and Board Presence 

8.11.1 Hot Swap Switch 

The ShMM-ACB-IV provides a Hot Swap switch signal using a micro-switch to 

sense the injector/ejector handle position. The board presence signal is 

connected to the other ShMM-ACB-IV through the ATCA backplane. 

The injector/ejector micro-switch provides an input (HS_LATCH) to the 

ShMM-500 CPLD, which is responsible for taking appropriate hardware actions 

as well as signaling the condition to the software. 

Micro-Switch HS_LATCH Signal HSL Bit in the CPLD Condition 

Open High 0 Handle opened 

Closed Low 1 Handle closed 

8.11.2 Board Presence 

8.11.3 Hot Swap LED 

Each Shelf Manager grounds the PRES_1# input signal of the other Shelf 

Manager when installed into the ATCA Backplane. This signal is responsible for 

taking appropriate hardware action as well as signaling the condition to the 

software. 

The Shelf Manager provides a a blue Hot Swap LED. The LED indicates when 

it is safe to "remove" the Shelf Manager from a powered Shelf. 

Table 15: Hot Swap LED 

LED State 

Off 

Solid Blue 

Long-blink 

Short-blink 

Condition 

The Shelf Manager is not ready to be removed/disconnected from the Shelf 

The Shelf Manager is ready to be removed/disconnected from the Shelf 

The Shelf Manager is activating itself 

Deactivation has been requested 



11596-012 


8.12 RTC Backup Battery (Assembly option) 

Caution! 

There is a danger of explosion if the battery is incorrectly replaced or handled. 

When the battery is replaced, the same type or an equivalent type 

recommended by the manufacturer must be used. Used batteries must be 

disposed of according to the manufacturer’s instructions. 

The ACB-IV carrier board provides a battery holder for a Lithium "Coin Cell" 

backup battery. The recommended battery type is CR2016. 

The battery voltage is supplied to the ADM1026 system monitor and to the 

ShMM-500 connector. Each of these connections is routed through two 1K Ohm 

resistors for UL compliance. 

When the battery is installed and the main power is turned off, the RTC chip on 

the ShMM-500 gets its power from the backup battery. If the ShMM-500 is 

removed from the socket, the RTC is powered from the on-board Tantalum 

capacitor. The capacitor is capable of keeping the RTC running for 30 seconds. 

This feature allows replacing ShMM-500s without loss of the time/date or other 

information stored in the RTC NVRAM. 

The nominal battery voltage is 3.0 V. U_min is 2.0 V, and U_max is 3.7 V. 

The lifetime of the battery is aprox. 3 years. 

Specification for the Backup Battery 

Duracell 

Varta 

Maxell 

DL2016 

CR2016 

CR2016 



11596-012 


8.13 Reprogramming of the FLASH Memory in the ShMM-500 

8.13.1 Introduction 

The Shelf Management software is stored in the FLASH memory on the 

ShMM-500. The software is: 

U-boot 

sentry.kernel 

sentry.rfs 

The U-boot program is usually permanent and allows the user to configure the 

software and network environment of the ShMM-500 and install new software 

from a network server. Sentry.kernel is the ShMM-500's Linux kernel and 

sentry.rfs is the ShMM-500's root file system. 

8.13.2 Reprogramming the Shelf Manager from a TFTP server 

• Download the sentry.kernel and sentry.rfs images and place them in the 

/tftpboot directory of your network reachable TFTP server. (A TFTP server is 

included with most UNIX and Linux systems) 

• Connect the first Ethernet port (ETH0) of the Shelf Manager to the TFTP 

server. There are two ways to do this task: 

(a) Set the jumpers in position 1-2 and connect an Ethernet cable 

between the Ethernet connector at the Shelf Manager’s front panel and 

the TFTP server, or 

(b) Set the jumpers in position 2-3 and connect the TFTP server to the 

ATCA Base Interface Hub. 

• Connect a serial terminal or emulator to the RJ45 connector on the front of 

the CDM Module Tray. 

• Set the terminal to 115000, N, 8, 1. 

• Power on your Shelf Manager and interrupt the boot-up process. 

(When the Shelf Manager is first powered up a message is displayed on the 

console that says: "Hit any key to stop autoboot:".) 

• The Shelf Manager will now allow you to interact with the U-boot program. 

• Configure the network settings where the Shelf Manager expects to find the 

TFTP server. 

serverip=192.168.0.7 

ipaddr=192.168.0.2 

netmask=255.255.0.0 

gateway=192.168.0.1 

• Start the upgrade process by typing in: „run net“ 

• After successful upgrade reboot the Shelf Manager and log-in as „root“. 

• Enter the command „clia version“ and verify the firmware version. 

A detailed instruction on how to reprogram a ShMM-500 is distributed with each 

new Firmware release. 



11596-012 


8.14 Shelf Manager Front Panel and Backplane connectors 

Table 16: Backplane Signal Connector (J1) pin assignment 

a b c d e 

Table 17: Backplane Signal Connector (J2) pin assignment 

1 -48 V_A VRTN_A NC -48 V_B VRTN_B 

2 

3 SHELF_GND SHELF_GND SHELF_GND SHELF_GND SHELF_GND 

4 

5 

6 

7 

8 

9 PEM_PRES_A SAP_PRES 

10 TX+ TX- HS_EN HA7 

11 AIR_FILT_PR PEM_PRES_B RX+ RXa 

b c d e f 

1 - TXD0 TXD1 - INT# GND 

2 - DTR Pres_GND CI DSR 

3 CD RTS RXD1 HA[0] CTS GND 

4 RXD0 SDA_CH1 INV_ACTIVE SDA_CH0 GND 

5 SCL_CH1 SCL_CH0 RI GND SDA_CH3 GND 

6 S1_TX+ S1_TX- GND 

7 S1_RX+ S1_RX- GND GND 

8 SDA_CH4 SCL_CH4 SCL_CH3 SCL_CH2 I2C_PWR_B 

9 SDA_CH2 GND 

10 I2C_PWR_A 

11 GND 

12 

13 GND 

14 

15 SDA_B SCL_B GND 

16 

17 GND 

18 SDA_A SCL_A 

19 GND 

20 

21 GND 

22 

Table 18: Front Panel 10/100 Ethernet Service Connector 

Pin # Ethernet Signal 

1 TX+ 

2 TX- 

3 RX+ 

4, 5 Unused pair 

6 RX- 

7, 8 Unused pair 



11596-012 


Table 19: Backplane connector (J1) and (J2) pin description 

-48V_A 

-48 VDC supply A 

-48V_B 

-48 VDC supply B 

AIR_FILT_PR 

Air filter presence (connected to switch to detect a missing air filter) 

CD 

Carrier Detect 

CI 

Shelf Intrusion signal 

CTS 

Clear To Send 

DSR 

Data Set Ready 

DTR 

Data Terminal Ready 

GND 

logic ground 

HA[0] Hardware address of Shelf Manager, bit 0 

HA7 Hardware address of Shelf Manager, bit 7 

HS_EN 

Tells the Shelf Manager that it is plugged in 

I2C_PWR_A 

3.3V power redundant path A for Shelf I 2 C-devices 

I2C_PWR_B 

3.3V power redundant path B for Shelf I 2 C-devices 

INT# 

External Interrupt request (Master Only I 2 C-bus) 

INV_ACTIVE 

This ShMM is in active mode (inverted signal of ShMM) 

NC 

not connected 

PEM_PRES_[A, B] PEM [A, B] presence (grounded when present) 

RI 

Ring Indication 

RTS 

Request To Send 

RX(+-) 

Ethernet interface (ETH1) to Hub-Slot (ShMC cross connect) 

RXD[0...1] 

Serial interface receive data 

S1_RX(+-) 

Ethernet interface (ETH0) to either front panel or hub-slot base interface 

(jumper configurable) 

S1_TX(+-) 

Ethernet interface (ETH0) to either front panel or hub-slot base interface 

(jumper configurable) 

SAP_PRES 

Presence signal of SAP (Grounded when present) 

SCL_A 

Serial Clock, IPMB-A 

SCL_B 

Serial Clock, IPMB-B 

SCL_CH0 

Master Only-I 2 C-bus to SAP 

SCL_CH1 

Master-Only I 2 C-bus Channel 1 (to CDM1 FRU SEEPROM) 

SCL_CH2 

Master-Only I 2 C-bus Channel 2 (to CDM2 FRU SEEPROM) 

SCL_CH3 

Master-Only I 2 C-bus Channel 3 ( not used in 5 slot Shelves) 

SCL_CH4 

Master-Only I 2 C-bus Channel 4 ( not used in 5 slot Shelves) 

SDA_A 

Serial Data, IPMB-A 

SDA_B 

Serial Data, IPMB-B 

SDA_CH0 

Master Only-I 2 C-bus to SAP 

SDA_CH1 

Master-Only I 2 C-bus Channel 1 (to Backplane FRU SEEPROM1) 

SDA_CH2 

Master-Only I 2 C-bus Channel 2 (to Backplane FRU SEEPROM2) 

SDA_CH3 

Master-Only I 2 C-bus Channel 3 (not used in 5 slot Shelves) 

SDA_CH4 

Master-Only I 2 C-bus Channel 4 (not used in 5 slot Shelves) 

SHELF_GND 

Shelf Ground 

TX(+-) 

Ethernet interface (ETH1) to Hub-Slot (ShMC cross connect) 

TXD[0...1] 

Serial interface transmit data 

VRTN_A 

Voltage return supply A 

VRTN_B 

Voltage return supply B 



11596-012 

Technical Data 

9 Technical Data 

Table 20: Technical Data 

Physical Dimensions 

Height 

Width (with mounting brackets) 

Depth 

Weight 

Shelf weight completely assembled 

Power 

221.5 mm 

480.07 mm 

414.72 mm 

14.7 Kg 

Input voltage nominal 100 VAC - 240 VAC 

Input Power 

Overcurrent Protection 

Cooling Capacity 

Front Boards 

Rear Boards 

Environmental 

Ambient temperature 

Humidity 

EMI 

Conducted Emissions 

Radiated Emissions 

Safety 

Protected Earth Test 

Hipot Test 

max 20 A 

20 A Circuit breaker 

200 W / Board 

15 W / Board 

+5°C…+45°C 

+5%...+85%, no condensation 

EN 55022 Class B 

EN 55022 Class B 

EN60950, test current 25 A, resistance 


11596-012 

Technical Data 

9.1 Shelf Mechanical Dimensions 

Figure 26: Shelf dimensions 

All dimensions are in millimeters (mm). 


SCHROFF GMBH 

www.schroff.biz 

www.a-tca.com 

Langenalberstr. 96-100 Tel.: + 49 (0) 7082 794-0 Fax: +49 (0) 7082 794-200 

D-75334 Straubenhardt

AdvancedTCA Shelf, 5-slot - ATCA - Schroff's AdvancedTCA ...

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